SOHC.co.uk Forums > CB500/550

battery

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MIKE550/4:
i have one of these optimate chargers, put it on yesterday and red light has stayed on when first connected , which i have read as fully charged
left it charging for about 3-4 hours put back on bike and nothing ?

is 3-4 hours long enough


what exactly is this desulphication ?

matthewmosse:
for an optimate the red lights indicate desulphating, orange is charging and green is good to go (at least on mine) It can take a day or more to do it's thing.

SteveD CB500K0:
... and it may need more than one cycle. If/when you get a green light, disconnect the battery and reconnect again. You'll probably find it goes staright back into desulphate mode.

Keep going. It may take a while.

Mine has resurrected more than one old battery via this route.

MIKE550/4:
ok guys cheers

will put it back on

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