Is it a stock ammeter, or an aftermarket add-on? Most ammeters use a "shunt" to carry the majority of the charge current, and just bleed a small current through the gauge circuit to deflect the needle. If that's the case, the gauge won't carry full charge/discharge current!
jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
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