Clean Energy for Life™
Building Better Batteries since 1925


With over 80 years of experience, Trojan Battery Company is the world's leading manufacturer of deep cycle battery technology.

Long-lasting, reliable and clean, customers all over the globe know Trojan deep cycle batteries deliver superior power for renewable energy.



Choose the best deep-cycle battery in the market - Trojan Battery.


Trojan's proprietary Maxguard® Advanced Design Separator and exclusive Alpha Plus® paste formulation team up to increase battery life, extend run time and decrease maintenance.


  • Durability, reliability and performance mean less hours of unplanned downtime and more productive hours on the job!


Renewable Energy


Durable, reliable and clean, renewable energy users all over the globe know Trojan Deep Cycle batteries are the perfect addition to any system, even in the harshest of environments.

Trojan Battery - Dependable, Uninterrupted Power.



Selected models are available in extra-durable Polyon® cases for heavy service applications


  • Outstanding technical support is available on the phone or on the web. 
  • Products are available through Trojan's worldwide network of Master Distributors. 
  • Trojan Battery's Plus Series™ was awarded Best Overall winner of Lift and Access magazine's LLEAP Awards.


Tips for Maximizing Your Battery Life For Solar Application

Store and operate your batteries in a cool, dry place.

For every 10°C (18°F) rise above room temperature (25°C or 77°F), battery life decreases by 50%.

Charge your batteries fully after each period of use.


Allowing your batteries to sit in a low state of charge for extended periods will decrease their capacity and life.

If you store your batteries for an extended period of time, be sure to charge them fully every 3 to 6 months. Lead acid batteries will self-discharge 5% to 15% per month, depending on the temperature of the storage conditions.

Monitor battery voltage and specific gravity of the electrolyte regularly to verify full recharging. As a general rule of thumb, the total amps from your PV panels should be sized between 10% and 20% of the total amp-hours (Ah) of the battery pack.

Many charge controllers have equalization settings that you can set to help ensure the health of your batteries. Equalize your batteries at least once per month for 2 to 4 hours, longer if your batteries have been consistently undercharged.


System Voltage

Voltage Settings






Daily Charge



















Water your batteries regularly.


Flooded, or wet cell batteries require watering periodically. Check your batteries once a month after installation to determine the proper watering schedule. Add water after fully charging the battery and use distilled water.


For procedures on watering, checking battery voltage and other maintenance instructions, refer to our battery maintenance section for more details.







Eco News & Resources

For the latest news on renewable energy, click here.

For More Information

Sign up here to receive our newsletter:

Privacy Policy

Solar Estimator

Want to know what your cost and payback would be on a renewable energy system?
Click here! Estimate my solar energy system.

Get Started

Click here for a quote on your renewable energy system!

Better Business Accredited connects people to solar energy professionals. NABCEP

Renewable University | Sustainable Community | Products | Company Profile | Client Solutions

© 2009 Eco Depot USA. All rights reserved.

Internet empowerment provided by GS Multimedia