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Top 5 Positive Customer Reviews for 18650 2c
They are good, but beware that if you use them with protected cells, the holder will get bent towards the exterior. If you swap it after with a non protected cell, then it will be loose inside the holder. it's only 4 mm, but it makes a big difference. It's not an issue to bend back the contacts tough, so it's a very minor thing. Except this detail, the quality is very nice and the holder is very thin. I can fit it into a taranis qx7, to replace the alcaline battery with a hand made li-ion pack with no problem, the cover can still be closed afterward.