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Use the form on the right to send us an email OR phone sales on 1300 795 327. 

46 Main Western Road
Tamborine Mountain, QLD 4272
info@deepcyclesystems.com.au
Tel: 1300-795-327 (Sales)

Technical Support +61 420 684 092

Monday – Friday 8:00am – 5pm
Saturday 8.00am – 1pm

46 Main Western Road
North Tamborine, QLD, 4272

1300 797 327

Deep Cycle Systems is a Lithium Battery manufacturer supplying battery storage systems for marine, recreational vehicles and the renewable energy sector.  

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Deep Cycle Systems - Informative Articles.

Are you thinking about upgrading your boat batteries to the superior technology of lithium? Here’s how DCS make it a breeze. Upgrading a Jeanneau 39i.

Paul Tomolowicz

Alex contacted DCS back in August ’17 enquiring about what would be involved in upgrading to the DCS 12V marine range of batteries.  It’s a question we get asked all the time.  The short answer is they would be a direct drop in replacement and there would be nothing that would need to be changed.  However, to get the most out of the battery upgrade, we always take a detailed look over the existing setup and make any worthwhile improvements to best enhance the performance of a DCS lithium batteries.  

Alex’s existing setup was;

- 3 x 105Ah AGM house batteries (which only provided a usable capacity of around 95Ah, being 30% of 315Ah and totalled 108KGs)

- 2 x 150W solar panels (300W total) 

- 2 x 10Amp solar regulators

- Charging the house batteries directly from the engines 80Amp alternator

- Cristec CPS2 12V 40Amp mains/shore charger 

- Cristec RCE electronic dual battery isolator (for isolation of starting and house batteries) 

This is a pretty typical electrical setup for boats of this size.

Jeanneau DCS batteries

Another request that Alex had was that he didn’t want to be spending thousands on a wind turbine and wanted DCS to ensure that the battery and solar system could cater for all his power needs, even during overcast cloudy conditions. 

With a great platform in place the upgrades consisted of;

- 3 x DCS 12V 100Ah batteries

- 2 x LG Neon R 360W solar panels (720W total)   

- 1 x Votronic MPP430 marine and lithium spec solar regulator (31.5Amp)

- 1 x Votronic LCD remote display monitor 

- 1 x 60Amp low voltage disconnect

 Removing the old AGM batteries wasn’t as straight forward a task as usual, as they had already started degassing and leaking lead acid everywhere.

Removing the old AGM batteries wasn’t as straight forward a task as usual, as they had already started degassing and leaking lead acid everywhere.

 The acid was eating the timber floor and this needed to be cleaned and neutralised before the new batteries could be installed.  Otherwise you run the risk of the acid eating away the new battery cases.    

The acid was eating the timber floor and this needed to be cleaned and neutralised before the new batteries could be installed.  Otherwise you run the risk of the acid eating away the new battery cases.    

 CRC Battery Maintenance spray, neutralises the acid corrosion.  

CRC Battery Maintenance spray, neutralises the acid corrosion.  

 Once the lead acid clean up was completed, the new 3 x DCS 12V 100Ah batteries had been installed and connected in parallel.  Unlike some lithium batteries on the market the DCS Lithium Iron 12V batteries can be connected in parallel and series. 

Once the lead acid clean up was completed, the new 3 x DCS 12V 100Ah batteries had been installed and connected in parallel.  Unlike some lithium batteries on the market the DCS Lithium Iron 12V batteries can be connected in parallel and series. 

 2 x LG Neon R 360W solar panels (720W total).  Marine spec frames ideal for boats. 

2 x LG Neon R 360W solar panels (720W total).  Marine spec frames ideal for boats. 

Under complete overcast rainy conditions the new solar system was producing 18Amps!  The solar system will ensure the batteries are fully charged during sunlight hours, ready for evening service.  With moderate overnight loads such as fridge, lighting, TV and communications we would expect the batteries to be fully charged by around 10am every day and certainly no need for a wind turbine.  There is also a nice piece of mind knowing that for long distance night passages there is now plenty of reserve capacity in the batteries for navigation and auto pilot equipment.  Usable storage has tripled from 95Ah with the AGM's to 285Ah with the DCS lithium's.         

 The Votronic MPP 430 marine spec solar regulator also features a dedicated engine battery charging circuit to ensure a maintenance charge is applied to the lead acid cranking battery thereby extending its service life.  

The Votronic MPP 430 marine spec solar regulator also features a dedicated engine battery charging circuit to ensure a maintenance charge is applied to the lead acid cranking battery thereby extending its service life.  

 The Votronic remote LCD screen was installed inside the cockpit, which at a glance provides solar power generation (as seen 6.7A), battery voltage and %SOC.  The Votronic regulators are fan forced and so provide reliable long term power output and have a 98% true MPPT conversion efficiency.    

The Votronic remote LCD screen was installed inside the cockpit, which at a glance provides solar power generation (as seen 6.7A), battery voltage and %SOC.  The Votronic regulators are fan forced and so provide reliable long term power output and have a 98% true MPPT conversion efficiency.    

 The 60Amp low voltage disconnect, will disable all 12V loads at 11.5V should the batteries approach 5%SOC (95% empty).  That way the engine can be started to apply a quick charge directly from the alternator OR wait for sunlight hours to automatically resume charging.  However, it would be very rare to ever see this device ever activated.  

The 60Amp low voltage disconnect, will disable all 12V loads at 11.5V should the batteries approach 5%SOC (95% empty).  That way the engine can be started to apply a quick charge directly from the alternator OR wait for sunlight hours to automatically resume charging.

However, it would be very rare to ever see this device ever activated.  

Jeanneau 39i with DCS Lithium batteries and solar system

Complete battery management solutions for DCS 12V lithium Ion batteries

Paul Tomolowicz

To have all your eggs in one - basket or not?  DCS has been designing and supplying boat and RV manufactures in Australia and overseas for many years with our lithium battery solutions.  DCS has actually been involved in the product development of our industry leading 48V 5kW BMU which is an hybrid and off grid battery management unit with an isolated transformer design, with UPS transfer and other software and hardware smarts that rival that of leading european manufacturers - so yes we do know a thing or two about both hardware and software charging equipment and solar MPPT’s (Maximum Point Power Tracking).    

Integrated Battery Management Systems (BMS) are a great idea for space critical installations.  However with most consumer electronics when it comes to space saving options it also usually means a compromise on the selection of internal electronic components, overall performance and long term reliability.  Also with this all eggs in one basket centralised design approach should one component fail you’ll need to part with the entire unit for repair or replacement.  

Some integrated lithium 30Amp battery management systems, can cost upwards of $2,000 AUD and can’t even recover lithium batteries, even though they state they are designed to manage lithium ion batteries.  It’s important that lithium profile based chargers have the capabilities to recover lithium batteries, so that in the event the batteries internal BMS shuts the battery down to protect it from under voltage conditions the charger must be able to wake up and resume charging the batteries as soon as possible to avoid permanent damage being sustained by the cells.    

What does a typical 30Amp BMS do? 

- 12V DC-DC in vehicle charging

- 240V AC mains charging 

- MPPT solar regulator charging (1 tracker) 

- Dual battery isolator  

- Load disconnect 

 

A combined maximum of only 30Amps of charging current can be utilised from all 3 power inputs (vehicle, mains & solar).  These chargers do not provide maintenance charging to the engine cranking battery, so for long term 240V mains connections there is no maintenance charge of engine batteries.  Most of these chargers also feature a low MPPT voltage range, which also limits solar panel selection.         

So what do we like to supply and install for our customers RV’s and boats at DCS?  3 carefully selected and proven components for each of the 3 charging sources (vehicle, mains & solar) a decentralised approach;     

- Enerdrive DC2DC 40Amp for in vehicle charging and automatic battery isolation from engine battery 

- Votronic 31.5Amp MPPT solar regulator (high efficiency 98%) with remote LCD display screen 

- DCS-LFP-1260 240V mains charger 60Amps (correct recovery capabilities of lithium ion batteries) 

- 60Amp low voltage disconnect (VSR) load disconnect 

Total costs $1,443 AUD.

 

Let’s take a closer look at the overall battery management system design and performance.  Unlike the all integrated BMS the DCS solution is able to push all combined charging currents simultaneously to the batteries for a much faster recharge time.  For example if there is a need to fire up a genset you can push 60Amps + 40Amps from the vehicle that’s a combined current of 100Amps.  Or if your running the engine 40Amps and sufficient sun power is available 40Amps + 30Amps = 70Amps.  Or if you really needed to top up the batteries fast you can run the genset (60A) + vehicle (40A) + solar (30A) = maximum combined charging current of 130Amps.  

“Isn’t 130Amps way too much charging current, won’t that damage the batteries?”  Not at all, the latest generation of 12V DCS batteries are able to be recharged at up to 150Amps continuously without hurting the battery cells.  For example running 2 x DCS-12V-100Ah batteries, totals 12V @ 200Ah.  Charging at 130Amps is only a 0.65C charge rate which is fine for our batteries.  Remember these are absolute maximum’s in perfect conditions, which is very rare.  

What else does the system do?  The German made and manufactured Votronic MPPT solar regulator also features a dedicated charger output circuit for the engine/cranking battery.  So it will maintenance charge and keep it topped up, increasing the batteries lifespan and ensuring it’s ready for cranking.  Automatic compensation of voltage losses on the charging cables.  It also features automatic AES (Automatic Energy Selector) mode which triggers Electrolux & Dometic brands of fridges to switch from LPG operation to 12V operation should the batteries be fully charged and excess solar power available (saving LPG).  As well as a very neat slim line remote LCD display screen that provides accurate battery voltage and solar charging current.

Votronic 31.5Amp solar MPPT regulator
Votronic LCD display

What is our choice of solar panels for marine/boat applications you might be wondering?  We'll it's the LG NEON-2 360W panels, which are a 1700mm x 1000mm 60 cell module.  Featuring unbelievably high 20.8% module efficiency, 25 year warranty, robust dual channel frame for superior rigidity and cyclone wind load resistance (5400 pascals) with a thick black powder coated frame that has far superior corrosion resistance compared with regular aluminium frames.  The panels are of course monocrystalline with an excellent temperature coefficient, so they keep powering on even during extremely high temperature and humidity conditions.               

LG NEON 2 solar panels

The DCS-LFP-1260 240V mains charger is a high performance charger with 60Amps steady charging current output and auto resume charging to keep the DCS lithium batteries at optimum levels when connected to mains for prolonged periods of time.  The charger can also correctly recover DCS batteries by applying a low current should they accidentally be fully emptied and will resume full power charging once the batteries voltages are restored to normal levels.  Backed by a 3 year replacement warranty.  Also available in a 24V model the DCS-LFP-2445.            

DCS-LFP-1260 Lithium Mains Charger

Dual MPPT trackers, the Enerdrive DC2DC also features a 600W MPPT PV input so if you needed to run any additional portable solar panels when free camping you can easily plug additional solar panels in via an anderson plug connection.

Enerdrive 40Amp DC2DC

 

When failure is not an option use only DCS 12V lithium ion batteries.  

The Ultimate DCS 12V Dual Battery Setup for your 4WD! Detailed analysis of under bonnet applications.

Paul Tomolowicz

We get asked all the time, is it okay to install the DCS lithium batteries under vehicle bonnets?  In short yes absolutely.  Why wouldn’t you when the DCS LFP cells have a wider operating temperature range compared with AGM cells are safer more robust and less likely to degas at extreme temperatures and have a significantly longer lifespan.  Let us further elaborate below on the facts.         

AGM cells have been traditionally used for high cold cranking amp requirements as they have good cold temperature characteristics compared to other lead acid cells.  However on the flip side they don’t like the heat.  AGM’s and other sealed type batteries (SLA or VRLA) do not like heat and should be installed away from engine compartments.  Manufacturers actually recommend to stop charging when the batteries are subject to temperatures above 50 degrees C as the cells degrade significantly with temperatures already above 25 Degrees C.

Lithium Iron Phosphate (LiFePO4 or LFP) cells have a significantly higher cycle life than AGM cells especially under deep cycle discharge applications.   The disparity is further increased as ambient temperatures increase.  The cycle life of each chemistry can be increased by limiting the depth of discharge (DoD), discharge rate, and temperature, but lead acid is much more sensitive to each of these factors.

The below graph shows the capacity retention % Vs cycle life of AGM cells and Lithium LFP cells, when subject to moderate/normal temperatures (25 Degrees C).  Which is also the temperature at which manufacturers specify their cell capacities.  

 AGM Vs LFP at 25 Degrees C.

AGM Vs LFP at 25 Degrees C.

As cycle life is influenced by the depth of discharge, the figure shows multiple DOD percentages for the lead acid.  It can be seen that the AGM pack must be limited to a 30% depth of discharge to get comparable life to a lithium-ion that is at 75% depth of discharge.  This means that the AGM battery must be 2.5 times larger in capacity than the lithium-ion to get comparable life at normal temperatures.  

Generally speaking at DCS we usually tell customers to work on a 2:1 ratio.  For every 200Ah of AGM battery you only need 100Ah of DCS LFP for similar usable storage.  So what happens under extreme under bonnet temperatures you must be wondering?  Thing certainly do heat up. 

The below graph shows average temperatures of 50 Degrees C.  The disparity between AGM and LFP is further exacerbated.    

 AGM Vs LFP at 50 Degrees C.

AGM Vs LFP at 50 Degrees C.

It can be seen that the AGM pack even when limited to a 30% depth of discharge (DOD) can only do around 1700 cycles with 60% capacity retention.  The lithium-ion cell that is cycling all the way down to a 75% depth of discharge is capable of 2000 cycles with a 80% capacity retention.  The AGM cell would need to be limited to around 5% DOD to have a chance.  This means that the AGM battery must be at least 4 times larger in capacity than the lithium-ion to get comparable life at these extreme temperatures.    

So why have so many 4WD enthusiast been installing AGM batteries under bonnets for years?  And complaining about the terrible lifespan? Is it a lack of knowledge or misleading information being passed on by those national based battery retailers?  One can only speculate, but at least now there is a superior deep cycle 12V battery on the market the DCS 12V lithium batteries. 

Just to clear up some myths; 

1. It is a myth that LFP (Lithium Iron Phosphate) batteries are more dangerous under extreme temperatures.  In fact it’s the exact opposite.  LFP cells have a much wider, safer and robust operating temperature range as can be seen in the above graphs.   

2. Apparently LFP batteries cannot be connected directly to vehicle alternators as there is a possibility of overcharging the battery on a long drive.  The DCS LFP batteries have an internal BMS (Battery Management System) even if the voltage regulator malfunctions in the alternator there is no possibility of overcharging the DCS batteries on long drives.  Most modern vehicles are now fitted with “smart alternators” and these are even better for the DCS 12V batteries as they will maintain a lower overall voltage on the battery packs which will only further improve the lifespan.  Remember from the graphs above "The cycle life of each chemistry can be increased by limiting the depth of discharge (DoD)”.  A smart alternator does exactly that by limiting the charging voltages to conserve fuel.       

So why are the DCS 12V 75Ah batteries so popular for under bonnet applications?  It’s because under extreme bonnet temperatures a single DCS 12V 75Ah battery can deliver similar usable energy to that of a AGM 12V 300Ah battery.  With significantly less weight and room.  You don’t need huge 100Ah & 120Ah batteries under your bonnet.

 

Recently we upgraded a Mitsubishi Challenger 2014 dual battery system.  The customer arrived with;

- 1 x Optima D34 cranking battery

- 1 x Ultimate 120Ah AGM deep cycle battery 

- RedArc Isolator with externally mounted switch 

- Total weight: 20KGs + 35KGs = 55KGs.      

Chocablock packed in there.  The customer was complaining that the cranking battery was struggling after only 2 years and he had the override switch on most of the time to crank off both batteries.  With what you have just learned, that is no surprise is it?  Also the amount of space the batteries had been taking up the engine cooling performance would have been significantly reduced due a lack of air flow and the under bonnet temperatures would have been at extreme levels.    

Old school dual battery setup

We removed both batteries and replaced with 2 x DCS 12V 75Ah batteries.  One for engine cranking and one for auxiliary deep cycling.  Is that enough power?  Absolutely.  With 750CCA these little batteries will easily crank over even the largest of V8 turbo diesels.

- 2 x DCS 12V 75Ah batteries

- Matson 140Amp Dual Battery isolator with integrated switch 

 The ultimate DCS 12V dual battery setup. 

The ultimate DCS 12V dual battery setup. 

With the isolation cut off voltage being 12.8V means that the cranking battery will be able to deep cycle down to around 80% of it’s capacity before it’s isolated.  At 12.8V the battery will crank over the engine.  So with the auxiliary 75Ah + cranking 60Ah (80% DOD) = 135Ah of combined usable storage.  For deep cycle accessories as a dual battery setup this actually more than doubled the existing AGM battery setup which only had a storage capacity of 120Ah with 50% being usable = 60Ah.

135Ah usable storage with the lithium's Vs only 60Ah with the AGM's.  

Overall weight dropped from 55KGs to only 20KGs.  That’s a weight saving of 35KGs off the nose of the vehicle which will keep the suspension happier.   

The DCS batteries are connected directly to the alternator which allows the batteries to swallow everything the factory 80Amp alternator can provide, which would be a maximum of around 60-70Amps.  These batteries can recharge super fast and are designed to be able to recharge at a continuous 100Amps. 

With the superior lifespan of the DCS LFP cells we don’t expect to see this customer again for at least the next 10 years. Or maybe his grandchildren if this beast of a tourer gets handed down.     

DCS Mitsubishi Challenger

North Coast Offroad Camper Up Spec’ed with DCS

Paul Tomolowicz

Feedback is an integral part of any businesses growth and development. Without it, a business has no sense of what is needed to keep its customers happy, and happy customers are a businesses best advertising.  DCS welcomes feedback from all its customers.  In this instance we are reviewing some positive feedback from a recent customer.

Terry from Brisbane purchased a new North Coast Campers - Caloundra Off road camper a few years ago and wanted to upgrade the electrical system from the standard lead acid setup to a larger Lithium based system, so he and his wife could spend longer periods off the grid and not have to look at or worry about the battery capacity and state of charge.  

Below is the email that Terry sent through to DCS a few days after picking up his caravan after the upgrades.    

"Positive and happy experience, with excellent results.

Paul from Deep Cycle Systems (DCS) recently upgraded the electrical system on my hybrid camper trailer. Before choosing Paul I had phoned other suppliers for quotes, and all they gave me was a price for lithium batteries, and nothing more.

However, when I spoke with Paul he clearly explained the different parts in a well designed electrical power system, and the long-term benefits of having such a system installed.  This was the information I had been seeking. 

I went up to Mount Tamborine and left with the camper with him for the install of lithium batteries, solar panels and the associated control hardware.

Wow, what a difference this has made! I now have 3 times the previous solar wattage, and 200 amp-hours 21stcentury lithium batteries, which are 42 kg lighter than the old lead acid batteries (technology from the previous century).

I am extremely pleased with how Paul designed, installed and tested this new system for me. Everything is very neat, and works perfectly. I am now looking forward to a decade of trouble-free power, making the system cost effective as well.

Paul is competent, consultative and customer focussed. He kept me informed of progress through regular text messages and photos, which I very much appreciated. I highly recommend Paul’s services.

Terry Johnsen

Brisbane"

 North Coast Campers - Caloundra Off road camper

North Coast Campers - Caloundra Off road camper

The upgrades;

The first step as always before commencing any works was to check over the entire electrical system, test the existing chargers, batteries, solar regulators, and inspect all cables and lugs.    

 These are the existing 2 x Lion 12V 100Ah AGM batteries,. After having been on a recovery charger for 24 hours they voltage tested at 11.0V = time for recycling.  

These are the existing 2 x Lion 12V 100Ah AGM batteries,. After having been on a recovery charger for 24 hours they voltage tested at 11.0V = time for recycling.  

 Existing Voltech 100W and 60W (total 160W) flat thin solar panels only produced a maximum of 1.5Amps at midday.

Existing Voltech 100W and 60W (total 160W) flat thin solar panels only produced a maximum of 1.5Amps at midday.

 We inspected the panels and found that the junction boxes had been corroded internally and so the PV cell circuits were no longer providing correct connection integrity.  

We inspected the panels and found that the junction boxes had been corroded internally and so the PV cell circuits were no longer providing correct connection integrity.  

 It took us over 2 hours just to remove these solar panels from Terry’s van, a careful operation to ensure no damage was caused to the roof.  

It took us over 2 hours just to remove these solar panels from Terry’s van, a careful operation to ensure no damage was caused to the roof.  

We would like to warn customers to stay well clear of these flat thin designed solar panels such as these for a number of reasons;

1. The junction boxes are completely exposed to the elements, so it’s only a matter of time before the weather penetrates inside and starts to corrode the connections.

2. There is no ventilation provided to the underside of the individual cells and so the conversion efficiency in full sunlight is terrible due to the cells overheating.  

3. Many have poor warranties. The standard on such solar panels is usually only 2 years.

 4. Overpriced.  

Due to the highly competitive solar industry in Australia and the reduction of government solar panel subsidies, solar panels have come down significantly in price in the last 2 years.  

Quality commercial solar panels with a 10 year warranty are now one of the cheapest components in a well designed caravan system.  

 We upgraded Terry’s van to 2 x 270W CSun Mono solar panels (540W) and in conjunction with the correct mounting brackets, provides sufficient air ventilation for superior performance and longevity.  Commercial panels are backed by a 10 year warranty.   

We upgraded Terry’s van to 2 x 270W CSun Mono solar panels (540W) and in conjunction with the correct mounting brackets, provides sufficient air ventilation for superior performance and longevity.  Commercial panels are backed by a 10 year warranty.   

 What a difference some quality solar panels make. The current jumped from 1.5A to 15.2A.  The existing Voltech MPPT solar regulator is rated to 30A, and so it now has a chance in providing up to 30A in perfect conditions.

What a difference some quality solar panels make. The current jumped from 1.5A to 15.2A.  The existing Voltech MPPT solar regulator is rated to 30A, and so it now has a chance in providing up to 30A in perfect conditions.

Next, 2 x DCS 12V 100Ah batteries were paralleled to provide a total of 12V 200Ah of usable storage and positioned and secured into place with some additional timber bracing to ensure they cannot move around, especially on corrugated roads.  DCS lithium batteries are built with a completely rigid internal chassis so the cells and BMS board cannot move and this design ensures that exposure to long term corrugated road conditions won't effect their performance.     

  2 x DCS 12V 100Ah batteries paralleled to provide 12V 200Ah capacity, with 96% usable storage.  

 2 x DCS 12V 100Ah batteries paralleled to provide 12V 200Ah capacity, with 96% usable storage.  

An Enerdrive DC2DC 30Amp charger was installed to enable correct charging from the vehicle.

 The DC2DC charger features an integrated MPPT regulator and will happily take some extra portable solar panels if ever the need arises.  

The DC2DC charger features an integrated MPPT regulator and will happily take some extra portable solar panels if ever the need arises.  

60A VSR (voltage sensing relay) protector installed to main load circuit.  The ideal setup is to have all chargers wired directly to the DCS batteries and all load circuits protected via a VSR or otherwise known as a smart battery protector.     

 60A VSR (voltage sensing relay) protector installed to main load circuit.  Cut off at 11.5V.

60A VSR (voltage sensing relay) protector installed to main load circuit.  Cut off at 11.5V.

The DCS 12V lithium batteries can be cycled to their full 100% capacity, however it’s difficult to catch them during the last 5% SOC due to the nature of lithium cells having a very flat charge and discharge curve.  If you’ve ever used lithium power tools you’ll know exactly what we mean, they will deliver a nice consistent linear power delivery and then very quickly drop off and shutdown.

This is a typical characteristic of lithium ion cell technology.  So ideally you want to cycle and use about 95% DOD (5% SOC remaining).  We recommend the installation of a VSR (voltage sensing relay) which should be set to cut off loads at 11.5V.  That way if your loads ever empty the batteries out the VSR will cut your loads at 11.5V.  That will allow the batteries to standby for several days until they can be recharged again.  If the batteries are installed in a system without a VSR set to 11.5V the internal BMS will open circuit the terminals between 10.0 - 11.0V and shut the batteries down, we refer to this as sleep/protection mode.  As the terminals don’t provide any resistance or voltage, most chargers won’t recognise that the batteries are still connected to them and so won’t automatically resume charging.

The only way to wake the batteries up from this mode is to apply another 12V power source to the terminals such as a vehicle alternator or another 12V battery as soon as a little charging current has flowed into the DCS batteries after a few seconds the BMS will wakeup and resume service.  It’s also important to note that should you ever empty the DCS batteries it’s important that the batteries return to a minimum 50% SOC as soon as possible so that no permanent capacity loss occurs.    

The existing voltage meter is an adequate reference of the batteries SOC.  You don’t need complex battery monitors.  We recommend a good quality voltage meter that can display 2 decimal places.  After living with lithium ion batteries after a few days/weeks you will learn and memorise how the voltages correspond to the SOC.  You can print and use the charge/discharge curves from the DCS website as a reference: http://www.deepcyclesystems.com.au/marine-rv-12v-deep-cycle-battery-charger-trolling/12v-100ah-lithium

As a rule of thumb under a charging state, anything above 14.0V is fully charged 100% SOC.  

Under a discharging state,

Voltages around 13.6V you are around 90% SOC.  

Voltages around 13.0V you are around 50% SOC.

Voltages around 12.0V means you only have around 10% SOC. 

If the DCS batteries are regularly getting sufficient charging currents the batteries should cycle between 12.8V ~ 13.6V most of the time.            

The above upgrades are standard inclusions for DCS customers upgrading to the superior performance and weight savings associated with DCS 12V batteries. When failure ins’t an option use only DCS 12V lithium ion batteries. 

Sailing off into the sunset

Paul Tomolowicz

If you had spent years building your dream boat with the dream of breaking free of the daily grind and sailing off into the deep blue, you wouldn’t be likely to jeopardise this by using inferior equipment, would you?

This was exactly what Ian did. A plumber by trade, Ian was fed up with all the red tape, beaurocracy and legislation changes and set about building a gorgeous custom made 38ft catamaran.

 Noosa River, QLD

Noosa River, QLD

When Ian spoke to Paul from Deep Cycle Systems about upgrading his battery system, he was currently running 3 x 12V 260Ah AGM batteries, giving him a total capacity of 12V 780Ah.  Now while his AGM batteries had done a pretty good job, Ian was ready to upgrade to a newer, more efficient, lighter, smaller and ultimately cheaper system. If you already know a bit about the different battery cell technologies then you would already know that Ian’s current AGM battery system with a total rated capacity of 780Ah only actually had around 30% usable storage.  Usable storage being 30% of 780Ah = 234Ah. They also weighed in at around 240kg and took up 1m3 of space.  Now in a confined space such as a boat, every kg and cm counts. So how could DCS batteries help?

 Existing 12V 260Ah AGM batteries 

Existing 12V 260Ah AGM batteries 

 

To provide Ian with a comparable amount of usable storage, 3 x DCS 12V 100Ah batteries would be needed, thereby providing Ian with 12V 300Ah, with 96% being usable storage with the DCS batteries.  So 288Ah, weighing 42kgs and taking up around 0.45m3 of space. That’s a difference of 197kgs, and 0.55m3 of space!

 3 x DCS 12V 100Ah batteries 

3 x DCS 12V 100Ah batteries 

Here’s a brief rundown on some other advantages of using DCS Lithium Ion Batteries

- lifespan capable of providing up to 5000 cycles

- Internal BMS allows charging from existing chargers and controllers (wind, solar, AC mains)  

- Can discharge at a continuous 100Amps 

- Can be recharged at up to 100Amps continuous 

- Fully sealed design with marine grade stainless steel M8 terminals

- Can be used for engine cranking

- Using the safest Lithium Iron Phosphate cell chemistry 

- Parallel capabilities (expand up to 10 x 12V 100Ah batteries, for 1,000Ah of usable storage) 

Because the DCS 12V batteries can be recharged with up to a 100Amp charging current, Ian also upgraded his existing 45Amp lead acid battery charger to an Enerdrive ePower 60Amp charger.  This ensures less fuel is wasted on board when the genset needs to be fired up, during days with little wind or solar power.          

The news gets even better. The DCS 12V 100Ah batteries are currently on special for $1199 Incl. GST and free delivery Australia wide to all metro cities.  So, whether you are building your dream boat to sail off into the horizon like Ian, or you simply want superior reliability and performance for your everyday boat or vehicle, contact Paul from DCS to join the ranks of delighted customers everywhere just like Ian.

Orders yours today: http://www.deepcyclesystems.com.au/marine-rv-12v-deep-cycle-battery-charger-trolling/12v-100ah-lithium