Charging Nimh From Solar Panel

This is pretty simple and you don t need much.

Charging nimh from solar panel.

If you have a solar cell that doesn t need. The solar panel is rated at 1 w with a max load voltage of 6 4 v and the product page is here. 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. Solar charging for load connected nimh battery.

I m not worried about maximum number of charging hours because sunlight isn t going to exceed 20 hours in chicago. Charging 12v 6amp nimh battery with solar panel. Solar aa nimh battery charger step 1. For a three pack that would be 4 8 v 3 1 6 v and 125 ma 2500 mah 0 05 c 125 ma.

Charging nimh battery with solar. Solar trickle charging nimh aa batteries. Assemble the solar cell. Then run wires from the battery to the charge connector making sure to match the positive and negative poles.

The battery capacity is 2450 mah with a nominal 1 2 v per cell and the datasheet is here. 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. The slightly lower voltage is not surprising because the solar charger was designed to end the charge cycle 30mv under max voltage. You now have the complete design for your own solar charger.

I haven t tested it too extensively and it s. To charge a battery with a solar panel connect a charge connector to the solar panel.