How to Install Trojan Batteries in Solar Systems: Expert Guide
Trojan batteries are installed by selecting the correct model (e.g., T-105, RE), configuring the battery bank for voltage/capacity, wiring in series/parallel, integrating with a solar charge controller, and following safety protocols. Proper ventilation, cable sizing, and voltage settings ensure optimal performance. Trojan’s deep-cycle design supports daily solar energy storage and discharge.
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How to Choose the Right Trojan Battery for Solar Systems?
Trojan offers models like flooded lead-acid (T-105, L16) and AGM (RE Series). Flooded batteries suit budget-conscious setups, while AGM requires no maintenance. Match the battery’s voltage (6V/12V) and capacity (Ah) to your solar system’s load. For example, a 24V system needs four 6V T-105 batteries in series. Calculate total Ah based on daily energy needs and backup days.
When selecting between flooded and AGM batteries, consider environmental factors. Flooded batteries perform better in high-temperature environments but require regular water topping. AGM batteries are spill-proof and better suited for mobile installations or areas with limited maintenance access. Trojan’s RE-12V-200AH AGM model delivers 200Ah at 12V, ideal for medium-sized solar setups. For large off-grid systems, the L16RE-B 6V 420Ah battery provides superior capacity when wired in series-parallel configurations.
| Model | Voltage | Capacity | Cycle Life |
|---|---|---|---|
| T-105 | 6V | 225Ah | 1,200 cycles |
| RE-12V-200AH | 12V | 200Ah | 800 cycles |
| L16RE-B | 6V | 420Ah | 1,500 cycles |
What Maintenance Extends Trojan Battery Lifespan?
For flooded models, check electrolyte levels every 2–4 weeks. Refill with distilled water to cover plates. Clean terminals with baking soda/water to prevent corrosion. Perform monthly equalization cycles. Trojan recommends discharging no deeper than 50% (flooded) or 70% (AGM). Use a hydrometer to test specific gravity (1.277 for fully charged T-105). Store batteries at full charge if unused.
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Advanced maintenance includes using automatic watering systems for flooded batteries to reduce manual labor. Install terminal protectors with anti-corrosion gel to maintain conductivity. For AGM models, conduct annual capacity tests using a carbon pile load tester. Keep battery surfaces clean – dirt accumulation can create parasitic discharge paths. Trojan’s Battery Maintenance Kit (TBK-1) includes essential tools like a hydrometer, filler bottle, and safety gear.
“Trojan’s deep-cycle batteries excel in solar setups due to their thick plates and carbon-enhanced grids，” says a Redway Power Systems engineer. “For longevity， prioritize temperature control and avoid chronic undercharging. AGM models are ideal for remote sites where maintenance is impractical. Always use a charge controller with temperature compensation to prevent overvoltage.”
FAQ
- Can Trojan batteries be used with lithium solar systems?
- No—Trojan’s lead-acid batteries require charge profiles incompatible with lithium. Use only with lead-acid charge controllers.
- How long do Trojan batteries last in solar applications?
- Properly maintained flooded models last 5–7 years; AGM lasts 4–6 years. Deep discharges and extreme temperatures reduce lifespan.
- Do Trojan batteries require ventilation?
- Yes—flooded batteries emit hydrogen gas. Install in well-vented enclosures. AGM batteries are valve-regulated but still need airflow.