Re: This set-up keeps draining the lower right battery

At 4:37 am +0100 7/4/01, Baran Galocy wrote:

Can anyone say why this set-up is killing any battery that is placed in the lower right corner?

I have an explanation.

I note two unusual events. The first is that the other three batteries in the lower bank have increased in voltage, relative to all other batteries.

You have had one battery fail in that corner at first, by a cell short circuiting. This caused the other three batteries to become over-charged.

This causes this bank to roughly equal all the other battery bank voltages.

Only by pushing the new battery voltage right down. The battery you are putting into that slot has to be in a very high state of charge if it is to be equal to the existing three. That bottom string will discharge into the other strings, and this can easily hammer the replacement unit.

The second uniquity is the high amperage readings of the second bank up. All these readings were taken while the system was charging from the photovoltaics.

That second string up is your real problem. It is sucking the charge out of the others. Disconnect it and test it thoroughly. Something has failed in there. The failure is preventing you from equalising the other strings.

My only answer is to cross-tie the banks, but I don't want to do this without relative certainty of success.

That would help but more important is to find the fault with the second string up.

This system worked great until it was taken apart and re-assembled (by someone else;)). I'm stumped! Any takers? Has someone seen this battery bank . . .

I didn't know we were allowed to send graphic files.

--
Hugh

Scoraig, Scotland
http://www.scoraigwind.co.uk

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