For years, my wife and I have been using ordinary LED lights with rechargeable AA and AAA batteries, and are far more satisfied with this arrangment than with 'rechargeable light systems.' LED lights can burn bright a long time between recharges, even in the dark of winter. We briefly experimented with a rechargeable light system, but were disappointed. It had halogen bulbs, and halogen bulbs are not the most efficient at energy usage. This meant having to constantly recharge and still have the light suddenly go dim on a long winter's evening.