The batteries sometimes do not work, sometimes only a few hours. Have you checked the battery tester and had to find that the batteries show briefly a full charge, then the voltage drops within a few seconds and the pointer of the charger falls into the void. Because that was when all batteries so at first I thought an error of battery tester - but it was not so - in other batteries, the full charge status is displayed at all times, a complaint in the Sent company did nothing. Can now be disposed only in special batteries.
