Wet (Lead-Acid)
Wet Lead Acid batteries are the most common batteries used in renewable energy systems because of their price, local availability, and ease of recycling. A properly maintained lead acid cell will last about ten years. This type of battery will deliver about 1,000 full charge-discharge cycles. Its drawbacks include the following:
- the batteries need to be equalized every month or so
- the water needs to be replenished often
- the batteries corrode and contacts need to be cleaned frequently
- the batteries are not freeze-tolerant and they need to be in a warm environment or need to be insulated
- the batteries release gases while charging so they need to have an exhaust to the outside.
PLUS: Cheap. Less vulnerable to overcharging. Great performance with careful maintenance Lighter per Ah compared to most Gel or AGM’s.
MINUS: Require maintenance. Battery acid can leak, causing corrosion and damage to chair and wiring. Not approved for airline travel. High rate of self-discharge when left sitting (6-7% per month).
