On an Android blog like ours, you're accustomed to reading about the rechargeable lithium ion batteries crammed inside smartphones and the external battery packs that can pump juice back into them. Today we're shaking things up. The SkyRC NC2500 is the kind of accessory that can make keeping up with those AA/AAA NiMH batteries you may have lying in a drawer somewhere less tedious. Just pop your batteries in, install the Android app, and look at those charge levels go.

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