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Renewable Batteries

Rechargeable batteries - or renewable batteries - are the only way to go. If you're still buying disposable batteries, then welcome to the 21st century, where batteries last for hundreds of cycles instead of just one. Sure, renewable batteries self-discharge at a higher rate than disposables, but that's nothing a household battery charger (which you need to use renewable batteries anyway) can't remedy.

We carry rechargeable batteries in all the standard household sizes (AA, AAA, C, D) as well as in non-standard, high-capacity sizes.

"Typically, disposable batteries cost $0.10 per hour to operate, while renewable batteries cost only $0.001 (1/10 of one cent!) per hour."

Solar Living Sourcebook 14th Edition
Chapter 4: From Panel to Plug

Renewable Batteries from Real Goods