LiFePO4 and LFP are the safest traditional lithium-ion batteries on the market today, which you should always add to the basket. An LFP battery offers nominal voltage, so for applications that require days of reserve energy, this would be the battery of choice. LFP batteries have a broad operating temperature range and excellent efficiency cycle performance, low internal resistance and high efficiency. Return energy efficiency of all lead battery output is 80%, batteries become particularly inefficient over time, but 3,2v lead acid 2v has the energy efficiency of LFP. Whether your battery consists of 8 or consists of 4 cells, it will work efficiently for a longer length of time.