Submitted: Monday, Jun 08, 2015 at 17:02
ThreadID: 119118 Views:6329 Replies:2 FollowUps:3
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G'day All -- I have the above charger which has 3 charge rates -- i.e. "bulk" - "absorption" - "float" --- It will now only charge at "bulk" resulting in overcharging of the 2 deep cycle batteries in parallel. --- I also know of a mate's whose has the same problem. Does anyone know how to fix or is it a throwaway? Stevo.
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Reply By: Notso - Monday, Jun 08, 2015 at 17:08

Monday, Jun 08, 2015 at 17:08
Is one of your batteries on the way out?

Try disconnecting one and see what happens. Then try disconnecting the other and repeat the test.

AnswerID: 554709

Follow Up By: DiscoTourer - Monday, Jun 08, 2015 at 21:58

Monday, Jun 08, 2015 at 21:58
Good advice. This is most likely the issue. Possibly one of the batteries may be showing physical signs in the form of swelling.

FollowupID: 840831

Follow Up By: stevo - Tuesday, Jun 09, 2015 at 07:53

Tuesday, Jun 09, 2015 at 07:53
Ok ---- Thanks guys --- yeah -- it very well could be one or both are "on the way out" ----- I'll do some separating and testing as yuse suggest - maybe even with a coldie -- Stevo.
FollowupID: 840840

Reply By: Member - Jim B8 - Monday, Jun 08, 2015 at 18:01

Monday, Jun 08, 2015 at 18:01
Are you just charging batteries, or batteries and a fair bit of load connected, eg fridges etc? A charger can never hit float if it is supplying load as well. My situation is 2 fridges, and 2 batteries, so float only happens late at night. I reckon you cant get 6 amps load out of 200 milliamps(float), and that's why I cant get float out of mine till very late at night. The fridges keep drawing till the cool makes their job easier

If its just batteries, (and no load) its pretty easy to find the "dead" one, take them off charge, un-cable them (take off the big cables that parallel them together), crack a beer, drink it long and slow, then measure them both with a voltmeter. The low one is the one with the shorted cell.
Make sure that both batteries are identical in every way. - if you replace one
good luck
AnswerID: 554710

Follow Up By: Bigfish - Tuesday, Jun 09, 2015 at 09:01

Tuesday, Jun 09, 2015 at 09:01
That's a good point Jim. Both batteries should be identical to get the best out of them and for longevity.

FollowupID: 840842

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