sea jump 2X7.4V 2700mAh 10C Lipo Battery Replacement with 2in1 Battery Charger for Hubsan X4 H501S H501C H501A H501M H501S W H501S pro FPV Quadcopter to Increase The Flight time(40mins)

Holds a charge well and keeps my drone in the air almost 30 mins on one battery. Just like the oem battery

Batteries arrived early,Charged just fine,Fit is perfect.Only problem is, it states 40 min flt time between both batteries. I wish.No, more like 20 min flt time between both batteries

Arrived fast, 2 batteries were at correct storage volts, charged with included charger, brought volts up to the 4.2 correct volts.

The charger is not accurate in it's charging only change to 93%.The batteries are good

He has so many of these batteries for his drone. Great for the price and came with a charger!!! Will buy more!!!

I opened this unit this past Sunday and charged up the batteries and flew the drone Sunday afternoon. Charged up the batteries again after use and flew again on Monday. Then that Monday evening when I went to charge up the batteries again, instead of the red light coming on when plugged in, and green lights out until hooking up the battery and then flashing green until fully charged; all three lights come on when plugged in, even without the battery attached, and they stay solid. No change when attaching battery and the battery is still "low" when checking to see if they did charge up. I contacted Amazon who said that I need to work it out with the manufacture. The manufacture replied that they were sorry, I should contact Amazon to see if they can do any thing.

Good product

These lipo batteries were priced reasonably and included a charger. However they were both very puffy, indicating electrolyte gassing, when received.Unfortunately, I had to dispose of them both before using them.