How To Increase Performance & Life Span Of Solar Battery Bank

In order to prolong solar battery bank life span, here are some things you can do:

Rotate Batteries

Rotate batteries periodically will help ones in the middle of the system to balance the charge.

Leave The Battery Charged

Never leave a battery left uncharged for too long because it can damage it.

Learn how to charge a 12V solar battery bank with a 24V solar panel here

Limit The Number Of Batteries

More batteries mean more connections, and each connection increases resistance and can cause uneven charging. Limit the battery to 16 or less, so a higher capacity battery is the go-to option instead of a bunch of smaller capacity ones.

Reduce Cable Resistence

Use larger cables to reduce resistance and allows for more even charge. Please use 4/0 size cable for 12V and 24V systems, and 2/0 for 48V systems.

Learn to size 12V and 24V cable

Use Distilled Water

Do not add battery additives or electrolytes because they can harm the battery

Allow Gassing

Gassing is normal for a battery. In fact, it should on a regular basis at around 14.1 Vdc, 28.2 Vdc, or 56.4 Vdc.

The process will produce hydrogen and water build-up, so having ventilation is important.

Use Equalization

Equalization controls the overcharge of the battery and prevents some cells from reaching a full charge on a regular basis.

It’s because individual cells within the battery can be unevenly charged overtime during normal cycling. Equalization also knocks off sulfation off the plates through gassing and returns all the cells to full charge.

Jeunkong Tai

Recent college graduate from the University of Kansas with an electrical engineering degree and bilingual in Chinese and English. I've learned about solar panels just by being around friends that have them on their home rooftop, and have gained knowledge by helping out on some DIY projects.

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