Please check following before placing warranty request:
MAKE SURE BATTERYPACK IS CHARGED. When is the batterypack discharged, protection circuit may kick off batteries to prevent their overdischarge. This batterypack must be conencted to batterypack for a while and should be working with it again. Batterypack should be charged with supplied wall charger, signalation diode lights green when batterypack is full and red during charge, Its must to first connect charger to the power and then batterypack to the charger!