Built to charge large batteries quickly, this lithium / LFP / LiFePO4 charger will charge any lithium battery at a rate of 45 amps. Lion Energy has optimized this charger for use with our lithium iron phosphate batteries (LiFePO4 or LFP). Not recommended for charging lead acid or SLA batteries, it is too powerful. This charger is rated at 45 amps and will charge a Lion Energy UT 1300 105 Ah battery in 2.4 hours or our UT700 56 Ah in 1.3 hours. All 12 volt Lion Energy lithium batteries should be charged using a LiFePO4 compatible charger like this one. SLA chargers will reduce the performance and lifespan of the battery.