Rechargeable Solar Batteries.
Make sure your garden lighting stay brightly lit by using these Rechargeable Solar Batteries.
Swap them around then make sure you've always got a set of fully-charged batteries to place in your outdoor lights.
Ni-MH AA 300mAh 1.2V batteries (1-8 batteries)
Ni-MH AA 600mAh 1.2V batteries (1-8 batteries)