Cheerwing 4-in-1 Charger & 4pcs 3.7V 350mAh Rechargeable Lipo Battery UDIRC U12S U12

The battery life is great ordered it for my child's robot. The product fit and it was good for the value. The durability is great and it is easy to use.

Worked out good. I like that can charge 4 at once

If you have a model that uses these batteries—buy it. I have a small helicopter, batteries are good for approximately 5 minutes, have more batteries yield more uninterrupted flying time.I deducted one star for two reasons. The wrap on the batteries is just a tiny bit thicker than the battery included with the helicopter, they will fit but take a bit of carefully applied pressure. Second reason, no pull tab, battery must be removed from the model by pushing it out from the other the end, due to the thickness already mentioned I could not add a pull tab.

Increasing my fly time, Super. Great add-on, I would definitely recommend.

These batteries can charge quite fast and you can use the multi charger and charge 5 at a time. And the charged batteries last in my r.c. Helicopter forabout15 minutes a pop . So you can enjoy the flight time for almost half the day. So i give it a solid two thumbs up. Solid. I wish i could give an accurate answer. But its more of an opinion

These last about 15 seconds when I take off.

Purchase with confidence this is a good product 👌

Bought them for my Mom to replace the one in her tv headphones. She replaced it herself! Said they work great now. She’s happy to have extras also!