Charging Battery Orientation

[Culvan Van Li]

I was a robot inspector in Arkansas last week. I saw many teams with charging setups that had the batteries sideways. I mentioned that I didn't think it was a good idea, and my understanding was that you should always charge the batteries upright because of the potential to leak electrolyte/acid. I scanned several of the manufacturer's data sheets and didn't find that in them.

I did find a thread from 2004 (http://www.chiefdelphi.com/forums/showthread.php?p=213287#post213287) where Big Al indicates they should be charged upright and I think we are still using basically the same battery technology. Did I miss a change in the battery technology since then or does that recommendation still hold true?

Andy

[Al Skierkiewicz]

Andy,
The batteries we now use (AGM) can theoretically be used and charged in any orientation including upside down. Personally, I recommend that they be charged in an upright orientation, although laying on their side is OK too. I still frown on charging upside down to keep the seals from expelling electrolyte or other liquid in that case where the seals may open. The batteries are designed to be recombinant such that what free moisture may be present will readily be combined and thus retained by the glass mat. In the upside down orientation, I believe this will occur much slower than in the right side up orientation.

[Culvan Van Li]

Thanks for the clarification!

Andy