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Trojan 31-AGM 12 Volt, 100 AH Deep Cycle AGM Battery

Trojan 31-AGM 12 Volt, 100 AH Deep Cycle AGM Battery


31-AGM 100 Amp-Hour Deep Cycle Battery, 12 volt.

This is the 100 amp-hour, 12 volt AGM series battery from Trojan. The sealed AGM lead-acid batteries are intended for solar and other renewable energy systems. It has a maroon case made of polypropylene. The battery terminals have both automotive and (5/16)-18 threaded bolt connections. AGM batteries are generally considered to be "maintenance free" because they are sealed and do not require water to be added.


  • 12 Volts
  • 100 Amp-hours at the 20 hour rate
  • Dimensions: 13.4375"L x 6.8125"W x 9.8125"H
  • Weight: 69 pounds
  • BCI Group Size: 31

Tips for Maximizing Trojan Deep Cycle Battery Life

Store and operate your batteries in a cool, dry place. For every 10°C (18°F) rise above room temperature (25°C or 77°F), battery life decreases by 50%. Charge your batteries fully after each period of use. Allowing your batteries to sit in a low state of charge for extended periods will decrease their capacity and life. If you store your batteries for an extended period of time, be sure to charge them fully every 3 to 6 months. Lead acid batteries will self-discharge 5% to 15% per month, depending on the temperature of the storage conditions. Monitor battery voltage and specific gravity of the electrolyte regularly to verify full recharging. As a general rule of thumb, the total amps from your PV panels should be sized between 10% and 20% of the total amp-hours (Ah) of the battery pack.

Warranty: 1 year free replacement, 1 year prorated, 2 years total.

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