They're simple and they work great. I take it with me when I go into nature, chop wood or whatever. It's easy to throw it and the battery in a backpack or tool bag and know that you can charge your phone multiple times with just one battery. Haven't been camping since I bought it, but plan to use it for that as well. I have other chargers but none of them can charge my phone as often as this one and the battery is 20v and I have a lot of these batteries.
Ni-Mh 19.2V 3.6Ah Replacement Battery For Craftsman Diehard C3 130279005, 130279003, 315.113753, 315.115410, 315.11485 1323903 1323517 11375 11376 Cordless Power Tools
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