5PCS Charsoon 3.8V 250mah 30/60c HV4.35 Lipo Battery PH2.0 Plug
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These are basically identical to Nitro Nectar HV batteries which I have found to be the best for 6mm brushed motors. The provide as much power as needed to the drone and a 3-6 minute flight time depending on what motors you are running. I would recommend these to anyone who has a tiny whoop. The PH2.0 connector is absolutely worth the upgrade, do it now if you haven't yet.
they are really LIHV batteries. in this price they dont have competitors. 0,8g weight more than stock 150mah battery but almost twice more fun. And that punch... One thing about package received: 4 batteries was fine (normal storage voltage) but one was drain (0,7V) and my charger didnt saw it. Short resque mission and fifth battery works fine as rest of his brothers.