It can be a challenge to find high enough wattage resistors that won't fry when you try to discharge a battery.
One thing that I found that works reasonably well is to go find some halogen headlight bulbs for cars - they're designed for 12V, and generally draw up to 7 amps apiece. Several of those wired in parallel will do the trick (though they can be a bit pricey).
John
From: "John Acord jcacord@gmail.com [electricboats]" <electricboats@yahoogroups.com>
To: electricboats@yahoogroups.com
Sent: Monday, June 13, 2016 7:21 PM
Subject: [Electric Boats] Re: AGM Battery Anomaly
Mike,
Another thing you can do to help your battery is to isolate it and do a deep discharge followed by a full charge. You will need a low resistance high wattage load though. For a 100AH 12V battery I use a couple of 1.2 ohm big ceramic resistors in parallel. 20 amps is a good discharge rate and battery heating is moderate. Recharge at at least that rate.__._,_.___
Posted by: oak <oak_box@yahoo.com>
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