The difference between AGM and Lithium batteriesUpdated 25 days ago

Battery weight

Lithium batteries overall are much lighter than AGM, making them a great option for transportation setups in vehicles, campers, trailers etc. This helps keep your vehicle under maximum weight capacity, allowing for weight to be used in other areas of your build, maximizes fuel economy, and eases manual handling of the battery. 

When comparing KickAss 120Ah batteries with the same dimensions, our Lithium LiFePO4 weighs just 14.3kg, whereas our AGM equivalent weighs 31.0kg. That's a weight saving of 16.7kg, more than double the weight of the Lithium battery. If you combine batteries in a series or parallel, think of the weight saving!

Battery Protection (BMS)

Both our Lithium and AGM batteries have safety features such as the durable ABS casing, however only lithium batteries have the added protection of a Battery Management System (BMS). The Battery Management System ensures the battery remains safely within all parameter. Protecting the battery from short circuits, low voltage, overloads and more. 

Cycle Life

AGM batteries typically have a cycle life ranging from 250-450 cycles. Extending cycle life is possible by minimizing the depth of discharge (DOD); e.g., 50% DOD can double the cycles, and 25% DOD can quadruple them. For less frequent use, such as weekend applications, AGM batteries may reach their calendar age before cycle capacity is exhausted.

Lithium LiFePO4 batteries significantly outperform AGM in cycle life, offering 2,000 plus cycles on average. Reduced depth of discharge can further increase cycle life, similar to AGM.