AGM LifeLine batteries are known for their quality construction and ability to be discharged again and again and not lose their amp-hour rating. The 31T battery is designed for deep cycle use in marine and RV applications.

Faster recharge, no current limitations with voltage regulated recharging
Full recharge after 30 days storage in a full discharge condition (77F rating)
Less than 3% per month self discharge at 77F (25C); less at lower temperatures
Sealed construction with absorbed electrolyte - no shipment restrictions, submersible without damage; install in any position; no need for watering
Cell safety vent valves - pressure regulated, non-removable
Rugged, non-marring polypropylene (copolymer) case/cover
Safety-even during severe overcharge the Lifeline AGM battery produces less than 2% hydrogen gas (4.1% is required for flammability in air)
Overall dimensions (including terminals): 12-15/16"L x 6-3/4"W x 9-7/8"H