Trojan Battery 31-AGM 12V Deep Cycle AGM Battery

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Trojan Battery 31-AGM 12V Deep Cycle AGM Battery

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Trojan Battery 31-AGM Summary
12 V
Amp Hours
100 Ah
9.18 in.
13.42 in.
6.81 in.

Trojan Battery 31-AGM 12V Deep Cycle AGM Battery

31-AGM 12V Deep Cycle AGM Battery

Trojan’s deep-cycle absorbed glass mat (AGM) maintenance-free batteries for renewable energy applications feature a number of design elements to provide optimum performance. Robust plates extend the life-cycle of Trojan’s deep-cycle AGM batteries.

A separator of glass fibers serves to isolate the positive and negative plates while acting as a blotter to absorb the electrolyte. The separator is maintained under compression between plates to assure contact with plate surfaces. A computer-generated grid design is optimized for high-power density. Low calcium grid alloy reduces gas emissions and a flame arresting, one-way pressure relief vent prevents buildup of excessive pressure. Trojan’s deep-cycle AGM batteries are low temperature tolerant, shock and vibration resistant and have a low internal resistance for higher discharge current and higher charging efficiency.

Features of the Trojan Battery 31-AGM 12V Deep Cycle AGM Battery:

  • Model: 31-AGM
  • Battery: VRLA AGM
  • Material: Polypropylene
  • Operating Temperature: -4°F to 113°F (-20°C to +45°C). At temperatures below 32°F (0°C) maintain a state of charge greater than 60%.
  • Self Discharge: Less than 3% per month depending on storage temperature conditions.
  • Specific Gravity: The specific gravity at 100% state of charge is 1.280
  • Expected Life VS. Temperature:  Chemical reactions internal to the battery are driven by voltage and temperature. The higher the battery temperature, the faster chemical reactions will occur. While higher temperatures can provide improved discharge performance the increased rate of chemical reactions will result in a corresponding loss of battery life. As a rule of thumb, for every 10°C increase in temperature the reaction rate doubles. Thus, a month of operation at 35°C is equivalent in battery life to two months at 25°C. Heat is an enemy of all lead acid batteries, FLA, AGM and gel alike and even small increases in temperature will have a major influence on battery life.
  • Charger Voltage Settings (@ 77°F/25°C)
    • Absorption Charge 12V: 14.1 - 14.7
    • Float Charge 12V: 13.5

Also Known As:
31 AGM

Group Size


Terminal Type
Dimensions  Weight
lbs (kg)
Capacity Amp-Hours (AH)Energy
in (mm)
in (mm)
in (mm)
2 Hr Rate5 Hr Rate10 Hr Rate20 Hr Rate48 Hr Rate72 Hr Rate100 Hr Rate100 Hr Rate
3131-AGM12 Volts613.42 (341)6.81(173)9.18 (233)69 (31)6582921001071091111.33

Important note for the Trojan Battery 31-AGM 12V Deep Cycle AGM Battery

Shipping Note: Due to the oversized nature of this product, freight is the only shipping method available. You may proceed with an order online and we will contact you prior shipping this item or please Contact Us and we will work to get you the exact shipping cost.
Note: Specifications and pricing of the Trojan Battery 31-AGM 12V Deep Cycle AGM Battery subject to change without notice. Illustrations and descriptions of the Trojan Battery 31-AGM do not claim to be complete or exhaustive.

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