[TenTec] Gel cells

[Dr. Gerald N. Johnson]

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