Charging Nimh From Solar Panel

Solar charging for load connected nimh battery.

Charging nimh from solar panel. Charging 12v 6amp nimh battery with solar panel. This is pretty simple and you don t need much. To charge a battery with a solar panel connect a charge connector to the solar panel. I actually tested the panel myself and found that in the best case with 90 000 lux full sun the max voltage was 5 2 v corresponding to a max current of 157 ma.

Charging nimh battery with solar. The solar panel is rated at 1 w with a max load voltage of 6 4 v and the product page is here. Solar aa nimh battery charger step 1. I haven t tested it too extensively and it s.

The solar charger batteries had an average voltage of 1274mv and the duracell charger batteries had an average voltage of 1295mv. The slightly lower voltage is not surprising because the solar charger was designed to end the charge cycle 30mv under max voltage. Divide the wattage of the solar panel by the voltage of the battery to get the number of amps your charge connector needs to handle. Solar trickle charging nimh aa batteries.

The battery capacity is 2450 mah with a nominal 1 2 v per cell and the datasheet is here. You now have the complete design for your own solar charger. If you have a solar cell that doesn t need. For nimh cells the maximum charging voltage is 1 6 v and the maximum current rate is 0 05 c for up to 20 hours.

I m not worried about maximum number of charging hours because sunlight isn t going to exceed 20 hours in chicago. Here we put the solar power supply together.