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flat battery advice please.

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Brian UK View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Brian UK Quote  Post ReplyReply Direct Link To This Post Posted: 01 Nov 2018 at 21:16
Might be worth trying to find what discharged the battery, or just ensuring you completely disconnect it if leaving for a time.

It's easy to get 12.9 volts on a batterry while charging, and find that voltage collapses to almost nothing when any load is present. Had that with a 70AH car battery which suddenly failed. Looked fine on charge but just turn the ignition on was enough to drop the volts to near 6.
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Jerry atric View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Jerry atric Quote  Post ReplyReply Direct Link To This Post Posted: 01 Nov 2018 at 22:33
Thanks. I will check both those tomorrow. I think the drain may be the starter solenoid. I cant remember but i think it measured some continuity between + terminal and earth, thats not right is it?
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Brian UK Quote  Post ReplyReply Direct Link To This Post Posted: 02 Nov 2018 at 07:26
No, the solenoid should not conduct any current when not operated.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Jerry atric Quote  Post ReplyReply Direct Link To This Post Posted: 02 Nov 2018 at 08:45
So I have something right. Unfortunately its a sealed unit. I had better double check my findings. Thanks.
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