Trojan Sind 04 2145 (IND29-4V) Solar Industrial Line-deep-cycle Flooded Battery

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Trojan Battery Company
4V, 1647AH Industrial Line Flooded Battery
SIND 04 2145 (IND29-4V)

Trojans Industrial Line batteries now ship with battery interconnects and terminal caps!

Trojan SIND 04 2145 Industrial BatteryTrojan’s Industrial line of deep-cycle batteries is the newest addition to Trojan’s lineage of high-quality flooded batteries. The Industrial line is engineered specifically to support renewable energy systems with large daily loads where the batteries are cycled regularly. These high amp-hour capacity batteries are ideal for use in large off-grid photovoltaic (PV) systems, off-grid hybrid PV systems, grid-tied PV systems with battery backup, smart grid peak shifting systems and a variety of other applications. Tested to meet both IEC and BCI standards, the Industrial line features advanced battery technologies that deliver reliable power and is housed in a dual container construction for enhanced battery protection. Trojan’s Industrial line is the perfect combination of performance and function. 

Product Specification

Type Capacity Amp-Hours (20-Hr Rate) Voltage Length Width Height Weight (Dry) Weight (Wet)
SIND 04 2145 1647 AH 4V 26.6875" 10.25" 24" 367 lbs. 465 lbs.

Trojan Solar Industrial Cycle Life Chart



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.






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