Quote:
Originally Posted by tuXguy15
This past season we used the 6amp charger on our batteries from andy mark. This gave us up to 13 volts for a full charge but the FRC batteries can go up to 15 max.
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While you can safely charge AGM 12 V batteries at 15 V
in certain conditions (smart charger, proper current and relatively low ambient temperature), they won't hold 15 V for long, if at all.
Test them under a small load like the Battery Beak does to get a more reliable voltage measurement. Test them under a moderate load like the CBA tester does to get an idea of voltage performance throughout a full discharge cycle.
Here's some data for the
MK batteries, and the old (no longer FRC-legal)
Exides.
Also, Al will likely be around shortly to explain more thoroughly why various forms of overcharging are contraindicated.