Lifeline GPL-31T - 12V, 105Ah high performance Deep Cycle Marine/RV AGM Battery


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The Lifeline GPL-31T is a high performance, Mil-Spec, AGM battery, produced in the United States.

Due to the Lifeline Battery's quality construction, it has an industry leading 2% per month self discharge rate at 77°F (25°C). These batteries off gas only 2% by volume under normal operating conditions, again, industry leading. No sulfuric acid leaks, no acid clean up, and more power in the same space when compared to conventional batteries.

GPL-31T is designed for Deep Cycle RV / Recreational and Marine Applications.


Volts: 12
Ah: 105
Length (mm): 328
Width (mm): 171
Height (mm): 236
Weight (kg): 29
Application: RV / Marine
Warranty: 1 year (private use)

Additional Information


Nominal Voltage_________________________12 volts
Amp hour capacity at 20 hour rate__________ 105 amp hour
Reserve Capacity at 25 amp discharge rate____195 minutes
Reserve Capacity at 15 amp discharge rate____340 minutes
Reserve Capacity at 8 amp discharge rate  ____688 minutes
Dimensions (inches)______________________Length=12.90*, Width= 6.75, Height= 9.27*
Dimensions (mm)________________________Length=328,  Width=172,  Height=236
Weight ________________________________ 69 pounds / 31.4 kilograms
Recommended charge voltage _____________ Bulk Charge 14.2 – 14.6 volts
______________________________________ Absorption/Acceptance Charge 14.2 - 14.6 volts
______________________________________ Float Charge 13.1 to 13.4 volts
Recommended Charge Amperage __________ Up to 100% of the rated amp hour capacity
Self Discharge Rate______________________ 2% per month at 77°F (25°C)
Operating Temperature __________________ -50° to 150° F (-45 to 65.5 C)
Cycle life______________________________ 1,100 cycles to 50% DOD, 500 cycles to 100% DOD
Warranty _____________________________ Lifeline Batteries offers one of the best warranties in the industry with our 5-year pro-rated and a one-year free replacement.


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Manufacturer Information