HEIOKEY Upgrade 6Pcs 3.7V 720mAh 20C Rechargeable Lipo Battery with 6 in 1 Battery Charger for Syma X5 X5C X5SC X5SC-1 X5SW X5C-1 UDI U45 U45W RC Quadcopters Drone

I've got a Quadrone Tumbler Cam that my gf bought for her grandson but decided it might be a little more than he could handle at his age. I wanted to try a drone for awhile so I tried it. It was strange and the battery wore out too quick to get a good feel for it so I looked around and decided to try these since they were as close in size as the original, just a bit fatter and a little shorter. A bit tight going in but they're short enough that there is enough room. All charged up relatively quickly an, so far, the batteries last longer than the original. With 7 batteries now, I can take the drone somewhere with a bit more space and less trees and make the trip worth it. I'm guessing I can get at least an hour and if I use my auxiliary battery and plug them in right after they're used up, that may be even longer as they seemed to charge pretty quickly. One warning. I pushed one in pretty far and had a hard time getting it out. They seem to connect pretty easy to its charger. Also for anyone with a Quadrone, at least out of the box, they were a bit harder to disconnect from the drone after used up. That may change with use.

Batteries are marked 720mAh 20C - both numbers are an exaggeration. These batteries are worse than stock while being advertised as an upgrade. Flight times are 5 to 7 minutes at best with easy moderate throttle use. Can’t recommend these at all. Very disappointing.

What I like about these is that they give power fast (20c rating is good). I also like the charger, the batteries don't fall out, seem to charge fast enough, and don't get hot. They also don't get hot when discharged fast. What I am not sure about is the 720mAh rating. I only get about 8 min for a JJRC H31 (modified! Will not fit a stock H31!). A little disappointing, but they have lots of power and give it fast while they last.

** Updated** 7-10-17 the seller has so kindly contacted me about the charger not working correctly and requested the opportunity to do whatever they could to make the transaction 100% satisfactory to me. I won't go into details, but these folks went above and beyond to make me a very happy customer. Will buy again just bought me a new syma x5 series 😁 Works on swift stream Z-9 with white battery connecter. Only thing sucks is the charger sometimes the red light is not working and sometimes the battery does not fully charge.

Great batteries definitely give me more flight time in my xc5-1. No question. The charger lights up and goes out with no correlation to battery charge. I"m using the single usb charger that came with the drone. I'll try another brand. If you just want the batteries this is a good deal. Recommend trying another charger. It won't be worse than this one I'm thinking.

The batteries charged once. I put them in a drawer thinking it was the charger. 2 days later I bought a new charger and nothing. They do NOT work at all. Do not waist your time and money. It was too late for me to return because I travel to much :-(

These batts are pretty good. They last quite a while in the x5c-1. The charger on the other hand leaves a lot to be desired. It glitches in and out. sometimes you plug in and no light. sometimes you're not plugged in and its lit. But at the end of the day it does the job. I didn't expect much from it so still giving five star for the batts alone.

poor quality