Crook C-tek 15000?

Submitted: Thursday, Jul 16, 2015 at 15:32
ThreadID: 119510 Views:1598 Replies:2 FollowUps:0
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My battery charger is reading 14.7v when charging my 400ah agm battery bank. It does not go to the green led after 3 hours of this. My gut feeling is that the charger is not working properly and is overcharging/damaging my batteries. I put an ebay 15A cheapy on the batteries, it read 14.3v and the "full" led turned on. Do I bury the C-tek or is the 14.7v reading too high.
Thanks, Geoff
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Reply By: geoffqld - Thursday, Jul 16, 2015 at 15:47

Thursday, Jul 16, 2015 at 15:47
sorry, temp in shed is 14degrees
AnswerID: 557076

Reply By: Allan B (Member, SunCoast) - Thursday, Jul 16, 2015 at 19:24

Thursday, Jul 16, 2015 at 19:24
Geoff, It is possible that one or more of the batteries in your bank are suffering from internal electrical discharge which is drawing some current flow from the charger and so preventing it from moving to the 'Float' stage. The charger algorithm will require that the terminal voltage rises to a specified value as well as the current falls to a specified value before it will move to the float stage.

You will need to disconnect the batteries from the bank so that they are isolated from each other then try charging each battery in turn in order to discover the culprit that will not proceed to float.

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AnswerID: 557081

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