Real Review: Junsi iCharger 306B LiPo Battery Charger

Thanks Carlos, great review. One feature I’d like on a charger is the ability to measure IR (internal resistance) on each individual cell. This is really the best way of monitoring the health of lipos. It also gives you an accurate measure of the battery’s true C capacity. The lower the IR, the higher the C rating. There are on-line calculators to give you that conversion. Manufacturer’s C ratings are totally bogus. As the cell deteriorates, the IR rises, and the cell’s ability to push amps drops off (and heat results). This may affect also decrease the total discharge capacity of the battery in amps. I never discharge my batteries all the way anyway, so measuring the total capacity via “cycling” or discharging is both time consuming and not very useful. It’s a proxy for the health of the battery but what really affects your flying performance is the C capacity. Soooo, does this charger measure the IR of individual cells?