Charging Nimh From Solar Panel

Assemble the solar cell.

Charging nimh from solar panel.

Solar trickle charging nimh aa batteries. Solar charging for load connected nimh battery. The solar panel is rated at 1 w with a max load voltage of 6 4 v and the product page is here. Charging nimh battery with solar.

The slightly lower voltage is not surprising because the solar charger was designed to end the charge cycle 30mv under max voltage. The solar charger batteries had an average voltage of 1274mv and the duracell charger batteries had an average voltage of 1295mv. 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 12v 6amp nimh battery with solar panel.

I m not worried about maximum number of charging hours because sunlight isn t going to exceed 20 hours in chicago. 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 haven t tested it too extensively and it s. Solar aa nimh battery charger step 1.

To charge a battery with a solar panel connect a charge connector to the solar panel. The battery capacity is 2450 mah with a nominal 1 2 v per cell and the datasheet is here. Here we put the solar power supply together. 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.

If you have a solar cell that doesn t need. Then run wires from the battery to the charge connector making sure to match the positive and negative poles.