Involvement:Expert (understands the inner workings) - Ownership:1 day to 1 week
+ button-top cell !!! (no need for magnets or solder blobs everywhere ;) ) + relatively high capacity + protected + "cheap"
- slightly longer and wider than unprotected cells, as most protected cells. length: 68 mm, max. diameter 18.4 mm
Well build battery: I´ve tested them with a 2A load and the low-voltage-protection kicked in after 75 minutes, so the capacity is close to the rated one. The protection circuit reset itself when the load was disconnected, nice. The cell most likely has a over-voltage-protection too, but I haven´t tested it. The PCB has also a over-current protection, which kicks in somewhere above 5 Ampere, what is actually quite good for a "noname" brand. Two cells had no problem with firing up a (overdriven) 6V Bulb (resulting in 2A current).
I am thinking of getting at least another pair ....
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