The Eco USBcell is the slickest rechargeable AA battery you've ever seen
![The Eco USBcell is the slickest rechargeable AA battery you've ever seen](https://www.pcworld.com/wp-content/uploads/2023/04/ecousb_1-100636767-orig.jpg?quality=50&strip=all)
Featuring the same lithium polymer chemistry of your smarthphone, these AA and AAA batteries can be plugged directly into USB for charging.
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The Eco USBcell is the slickest rechargeable AA battery you've ever seen
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Application Guide: contains (4) AAA batteries. (4) Recheargeable Batteries. 500X ALKALINE BATTERIES.
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