There are 4 solar vent fans in our boat but only one of them works.
These vents supply a constant flow of air to keep the boat’s interior dry.
We took the one apart that works, removed the battery and put it in one that didn’t work to see if they needed new batteries.
It started running so we took the NiMH C-Cell to Batteries Plus to get new ones. The new batteries were $5.00 each and we needed 3 of them. We found the battery in a catalog but they cost $27.99 each. We saved $68.99.
Tonight we have running vent fans!