For those willing to put some elbow grease into it, there is an almost unlimited supply of 18650 lithium ion batteries around for cheap (or free) just waiting to be put into a battery pack of some ...
YouTube User [Vuaeco] has come up with a novel idea, combining power tool battery packs to double the capacity. Starting off with two slimline 2.0Ah compact battery packs, [Vuaeco] wanted a larger ...
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