battery chargers keep blowing? | on ElectriciansForums

Discuss battery chargers keep blowing? in the Talk Electrician area at ElectriciansForums.net

G

guitargraham

Hi all, saw my brother over Xmas and he has a problem with battery chargers fusing out when he turns them on, now blown 3 different ones. All other things work ok.
Any suggestions would be helpfull before i call round to look, thanks in advance.

Graham
 
Dont take this the wrong way but this happens when the polarity is the wrong way round so you will need to check other than that it could be a faulty battery.

PS make sure the charger is on trickle charge and not boost plus check the fuse is the correct size the one on mine is 15 amps but they all differ
 
Hi thanks for that, polarity was my first thought so lent him my socket tester and all sockets where fine, i think all the charges were brand new so fuses should be fine, will check with him if it always happens on the same battery and come back.
 
crossed cables on battery, not mains polarity, is probably the issue here, either that or knackered batteries
 

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