Review on 🔋 ExpertPower 12V 20A Smart Charger: Optimized for Lithium LiFePO4 Deep Cycle Rechargeable Batteries by Keith Ostby

to operate portable camping water system with SeaFlo 55 psi pump. I bought a battery charger and when I first plugged it in the battery read about 12.7 volts indicating it was about 50% charged (which is normal). The charger initially put out 4.5 amps, and over the next three hours the voltage gradually increased and the current dropped. During the last 30 minutes of the charge cycle, the charger delivered approximately 1/2 amp at 14.2 volts. The charge cycle ended and the charge indicator turned green once the voltage reached 14.4 volts. HEATING: The charger warmed up slightly for the first few hours of the charge cycle, then gradually cooled as the current dropped over the last 30 minutes. charge cycle. Nothing I wouldn't expect from a charger. The heating wasn't excessive or anything that would worry me. NOISE: The fan was quiet and you probably didn't hear it at all from more than 5 feet away. CONCLUSION: The charger does exactly what the manufacturer promises. Only time will tell if it's durable and will last, but it looks well made. RECOMMENDED NOTE: This charger is designed for "medium" 12V LiFePO4 batteries that have a minimum safe maximum charge current of 5 amps. They are typically in the 1540 Ah size range. It will charge large batteries, albeit slowly, but this charger should never be connected to lithium batteries listed with a maximum charge current of less than 5 amps. For very small 416Ah LiFePO4 batteries, use the Expert Power Charger model EPC-122 (2 amp output). The charger model EPC-1220 20 Amp should be used.