Common Sense RC2-Pack of Lectron Pro 3.7 Volt - 100mAh 20C Lipo Batteries for Estes Proto X / Syncro X Nano Quadcopter

What a great deal. Cycled charged them 5 times each. No issues. The set work as new batteries. Thank you.

Bought these batteries as replacements for the Estes Proto X quadcopter. Both gave about one minute of flying time compared to the expected 4-5 minutes. So... they were useless and a waste of money.

I didn’t have much luck with these. I put a charge on them and used them a couple of times But then put them away for a couple of months. I charged them again and put them in the drone but only got about one minute of flight time. I attempted to charge them more but flight time was still disappointing.

Fast shipping work as advertised.

Good deal for what I needed.

Only getting about a minute and a half of flight time with these batteries. I would recommend spending a few extra dollars and getting the official Estes batteries sold on amazon.

It might be a different problem, but this battery isn't lasting to long. I'll try the other one and see if there is any notable difference.

These two batteries arrived on time. Neither battery had any energy nor would they take a charge. They are worthless. I plan to return them.