Trojan 31-GEL 12V, 102AH (20HR) Gel Battery


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Trojan 31-GEL 12V, 102AH (20HR) Gel Battery  call for shipping quote  1-800-627-3809


TRO31-GEL 31-GEL 12V 102A-H

Please Note: All of our Trojan batteries are shipped directly, fresh from the Trojan factory to ensure the longest lifetime and minimize their self-discharging.

Trojan will only drop ship batteries within the lower 48 states and Canada. Shipments to HI or AK will need to be consolidated in our warehouse prior to shipping.

Trojan Battery Company

Trojan Battery Company
12V, 102AH Deep Cycle Gel Battery

Trojan 31-GEL Battery

Trojan’s deep-cycle gel batteries are sealed, maintenance-free batteries that deliver superior power in demanding renewable energy applications. Engineered for rugged durability, outstanding performance and long battery life, Trojan’s deep-cycle gel batteries feature a number of important design characteristics that provide significant advantages over competing gel products. The gelled electrolyte is a proprietary formulation containing sulfuric acid, fumed silica, pure demineralized, deionized water and a phosphoric acid additive. This exclusive formulation produces a homogenous gel that delivers consistent performance and dramatically long cycle life. The heavy-duty grids lock active material onto the grid network to efficiently deliver more concentrated energy to the terminals. Premium grade, double-insulated separators allow maximum charge flow between the plates for optimum performance.

Product Specification

BCI Group Size Type Capacity Amp-Hours (20-Hr Rate) Voltage Length Width Height Weight
31 31-GEL 102 AH 12V 12.9375″ 6.75″ 9.625″ 69 lbs.

Gel Battery Cycle Life

The most important characteristic to consider when purchasing a deep-cycle battery for a renewable energy application is cycle life. This is usually measured as the number of discharge/charge cycles the battery can provide before its capacity drops to a specified percentage of its rated capacity (i.e. 50%). Batteries from different manufacturers may have the same capacity and energy content and be similar in weight, but design, materials, process, experience and quality control have a big influence on how long the battery will cycle. When comparing two batteries of equal Ah capacity and cost, a battery capable of 1,000 cycles is effectively half the total life cost of one that is only capable of 500 cycles.

Terminal Configurations

Universal Terminal

Universal Terminal Polyon Case
Terminal Height Inches (mm)
1-1/8 (28)
Torque Values in-lb (Nm)
95-105 (10.7 – 11.9)
Through-hole Diameter (mm)
5/16-18 (8) * Polyon Case

Trojan Battery Company


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