Charging 3 lithium 3.7 volts of charging boards???

Loat charging, however, is a useful option. The safety issue with keeping the battery on constant charge is that if the charger should somehow go haywire and apply a higher voltage there could be problems. And, so the logic goes, the shorter the charger is turned on the less likely the charge will go haywire while connected to the battery. However, there is another safety method, the battery protection board, which should be included either on the battery or in other circuitry between the battery and the charger.