Buying fresh Battery

Submitted: Sunday, Dec 19, 2004 at 07:45

ThreadID: 18690 Views:2256 Replies:2 FollowUps:3

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Wok

Hello Forumites,

I read on some battery help sites that á battery should be bought 'fresh' as they fall off once the acid is added.

Q. Does this apply to
1. AGM
2. GEL

Thoughts?

TIA

cheers

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Reply By: Member - Jimbo (VIC) - Sunday, Dec 19, 2004 at 09:36

Sunday, Dec 19, 2004 at 09:36

Wok,

The answer as I understand it is no.

However I would check the date manufactured to see that it is reasonably new. Having said that, an AGM can sit unattended for very long periods without charge loss unlike a wet cell.

Have a look here. There are sections on Gel and AGM batteries. It's not a bad read and taught a dill like me a fair bit.

http://www.windsun.com/Batteries/Battery_FAQ.htm#AGM,%20or%20Absorbed%20Glass%20Mat%20Batteries

Cheers,

Jim.

AnswerID: 89437

Follow Up By: Wok - Sunday, Dec 19, 2004 at 12:09

Sunday, Dec 19, 2004 at 12:09

Hello Jim,

Thks for the link......I didn't describe the question properly,

If a wetcell's storage capacity is 100Ah when new & dropped to 80%[say] after 1 year, would GEL or AGM battery lose storage capacity as well?

cheers

FollowupID: 348318

Follow Up By: Member - Jimbo (VIC) - Sunday, Dec 19, 2004 at 12:20

Sunday, Dec 19, 2004 at 12:20

Wok,

According to that site and various feedback I have got is that a wet cell will only ever charge to about 80% from your car, whether it's new or old and they take a long time to charge; apparently only accept about 5 amps/hour.

AGM's are supposed not to suffer this fate regardless of age until they die or are on the way out. The time this takes depends on how often you cycle them very low. Supposedly if they are not cycled below 50% too often 6 to 8 years can be expected. A lot of factors will of course affect this. mine is only 6 months old so I can't comment.

Cheers,

Jim.

FollowupID: 348320