Topic Magnetic Motor Generator - Reduce Your Electric Bill With a DIY Guide
The Ni-Cad or NiMh batteries used in these units today have O’Neal Energy Slasher Review little or no 'memory' so they'll recharge fully over and over again, even when the light doesn't run out of power before dawn arrives. That can be an issue in certain Northern climates where, during the summer, there's only a few hours of darkness.
By the same token, there may not be enough sunlight hours to fully recharge the batteries. The lights may not burn all night. But many people set a timer on wired lights to turn off well before dawn. So, as with any option, solar lighting is an individual choice.
There's no need to turn them off and on, or even to set a timer. Sensors cause them to charge as long as there's sunlight and to come on when the ambient light dips to levels at dusk. Most modern solar lamps will produce almost 7 watts for 8-10 hours. They can achieve that because most use highly efficient, low wattage consumption LEDs instead of incandescent bulbs.