Leisure battery voltage drops on load

[hardwick53]

Does this voltage drop seem excessive?

This evening the LB was reading 12.4v, when I ran the Propex blow heater for 5mins or so the voltage dropped to 11.9v straight away. When the Pro stopped, the voltage went back up to 12.3v.

I have my suspicions about the LB as it has drained a couple of times a few years ago probably lower than it should so think it may have caused some damage.

I haven't had the battery tested by a garage as yet but charges ok and generally good for a couple of days camping.

Appreciate any advice.

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[CovKid]

Does sound as though its in its final throes. It may have the voltage but not the amps any more.

[hardwick53]

Does sound as though its in its final throes. It may have the voltage but not the amps any more.

Thanks CovKid, thought that could be the case.

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[Oldiebut goodie]

[hardwick53]

Thanks Oldiebut goodie. I think possibly 80% capacity but not able to supply the amps so voltage dips.

New battery over the winter when I install the cabling & controller for my 100w panel.

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