Use these 4 rechargeable NiMH AA batteries in anything you have that requires AA batteries. Use them up, when they are dead, recharge them. Do this again and again - on average about 300-500 cycles. You will feel smart when you save all that money and the landfill. These little babies have a Low Self Discharge which means they can sit on your shelf for 12 months before they start to lose effectiveness.
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