Lithium batteries have been around for a few years (in your mobile phone, for example) but their usage in RVs is much more recent. Until then, the Rolls Royce of batteries was the AGM deep-cycle. The disadvantage of AGM batteries when compared to lithium batteries is their physical size lithium batteries are much smaller and about 75 per cent lighter which is a major asset in any RV. They can be charged to 100 per cent capacity and will give nearly their maximum voltage down to 20 per cent. Lithium batteries can be charged at nearly 100 per cent efficiency (most batteries run at about 85 per cent) which means lesser energy loss. But there are disadvantages of lithium batteries they are the most expensive of all and when fully discharged, the voltage drops very rapidly resulting in a dead battery which needs to be replaced.
All of the above assets were the reasons that Kimberley Kampers, along with several other manufacturers, opted for lithium batteries, with appropriate protection for the discharge problem, for its 12V power supply needs
