Is this battery broke beyond repair

[jevansio]

So a couple of weeks ago I left the Supra with a door open & the battery was dead the next morning. It's a Varley Red Top 25 which ain't got much capacity anyway.

 

So I put it on charge, but the charger doesn't seem to charge it correctly, keeps flipping between charge & standby.

 

The battery says "Do not fully discharge" and "Always charge with an alternator" on the warnings.

 

Have I broke it?

 

Should I hook it up in series to my other larger battery & attempt to charge it with the alternator or could that take out my other good battery also?

[TTRickeh]

Don't know, but liking the new avatar.

[bignum]

It could be foobared, i think those batteries need a certain type of charger, deep cycle springs to mind bud.

If your charger is not regulated the battery can be overcharged.

Edited July 17, 2010 by bignum (see edit history)

[jevansio]

Is it worth putting on the car along side my other battery & seeing if the alternator charges it? Or is that a bad idea if the battery is broke?

[Andy Blyth]

Hi Jay

 

It's worth a try to use a set of jump leads to connect your Red Top in parallel (+ to +, - to -) with a working battery in a running car. Another option could be to jump start your Supra with a known good battery and take it for a long run.

 

I wouldn't hold my breath though. Lead acid batteries really don't like being discharged - especially ones constructed for high discharge currents like car batteries.