[TenTec] Gel cells

Dr. Gerald N. Johnson geraldj at storm.weather.net
Tue Feb 10 23:43:42 EST 2009

On Tue, 2009-02-10 at 19:25 -0500, Gary Hoffman wrote:
> I would advise care when charging this battery.
> If you charge it too aggressively, you will cause too much gassing, which in
> turn will force small amounts of gas out the safety vents if the
> pressure/temperature get too high.

There is where both the current limiting and voltage limiting come in.
You need to have a float voltage usually lower on a gel cell than a wet
cell (the maker's specification sheet will make both limits very clear),
and then to lower the voltage with the current limit.
> Once lost to the outside, this electrolyte cannot be replaced.
> I would limit the charging voltage (and thus the current) to avoid this
> issue.
> Look up the details for the specific model battery you possess.
73, Jerry, K0CQ

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