Drop in lithium deep cycle replacement leisure batteries

Leaders in Lithium-iron Phosphate motorhome, caravan & marine leisure batteries

Design considerations in lithium deep cycle batteries

Deep cycle lithium batteries differ in design to regular batteries in several ways. The deep cycle lithium battery is designed and constructed in a way that allows it to spend most of its life being discharged from full to empty frequently before being recharged.

An important characteristic of the lithium deep cycle battery is that it must include is the ability to supply a high current to an external load for extended periods of time. KS Energy UK have designed their lithium leisure batteries to do just this. The range incorporates an integral battery management system (BMS) that allows a constant current discharge up to 150 amps and the ability to exceed this for short periods.

There are several other design considerations that should not be overlooked and most reputable brands will try to cover these bases too. The BMS should be designed to cut out once the cells are discharged to a predetermined level to ensure the battery cannot become over discharged during deep cycling, failure to protect against such a scenario can be catastrophic. The

Conversely, regular lithium batteries may be called upon to supply only high loads for short periods of time and they often experience partial discharging during use, for example vaping batteries or mobile phone batteries. Often, different lithium chemistries are employed to suite the specific use and demand.

Our lithium deep cycle batteries contain cells that are divided into individually packaged smaller cylindrical cells which incorporate a 32mm diameter stainless steel casing. This averts heat build-up, allowing the dissipation of heat during high loads over extended durations. Many thousands of charge and discharge cycles are possible. We also employ lithium-iron phosphate chemistry in our deep cycle lithium batteries, which lends itself to extended use over thousands of cycles. This is why we offer an industry leading warranty.

Some storage batteries may contain larger individual cells such as prismatic or stacked pouch cells. These can exhibit a higher internal heat build-up under larger loads, and tend to poorly dissipate heat. This means these cells struggle to provide high current demands for extended periods and can easily suffer accelerated cell aging. Warranty durations may often reflect such factors.

In addition to over discharge, over temperature is a critical consideration in cell aging. This is a process that has been well researched and is well understood. Excess heating and high operational temperatures are the number one cause of degradation in lithium cells.

In fact, a discharge temperature more than 50 degrees Celsius can reduce the life of a lithium battery up to 50% over less than a few hundred cycles. Once a lithium battery ages, the loss of its ability to retain its capacity is unfortunately permanent and can never be recovered.

Lithium cylindrical cells 32700 cylindrical cells. Higher mechanical & thermal stability, increased construction costs
Lithium prismatic cells Offering compact, faster & cheaper battery construction. Less thermally and mechanically stable
Lithium pouch cells Compact construction. Poor mechanically and thermal stability

Our lithium technology and where to buy:

You can learn more about KS Energy UK's lithium deep cycle battery technology or browse and purchase our lithium deep cycle battery products by navigating with the links above.