Converting Solar Garden Lights to 6V?

I'm trying to change the battery in a solar walkway light to a 6V. The reason for this is Im also now using a light that contains 21 LED's at 4.5V instead of the 1 LED that is in the light. The charge for the battery is from an external solar panel at 10V. I don't think the charge controller in the light can handle the volts in the battery as the light is always on - even when the panel is not connected. Like the power from the battery is going backwards thru the controller. I do see a diode in the controller and was wondering if I just need to increase the size of it? Please help. Thanx...

rickharris6 years ago
Correct. You will need a separate charge controller and 6 volt battery. Your LEDs will need a suitable resistor or constant current driver as well.