Trojan 27-GEL 12V, 91AH (20HR) Gel Battery, Group 27

Trojan 27-GEL 12V, 91AH (20HR) Gel Battery, Group 27
Trojan 27-GEL 12V, 91AH (20HR) Gel Battery, Group 27
$319.06 List price $365.00

Availability:  1 - 2 Weeks

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Item code Model number Volts Amp Hours
TRO27-GEL 27-GEL 12V 91A-H

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Trojan Battery Company

Trojan Battery Company
12V, 91AH Deep Cycle Gel Battery


Trojan 27-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
27 27-GEL 91 AH 12V 12.75" 6.75" 9.25" 63 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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