ZeeePremium Series 3S Lipo Battery 4200mAh 11.4V High Voltage Shorty Battery 120C with XT60 Plug Soft Case HV Lipo Compatible with Rock Crawler Helicopter Airplane Drone Boat Racing Models(2 Pack)

Great value for a good battery set long life and fits perfectly in my h10 optic.

Bought these for my Redcat Ascent Fusion. They work great and last a long time.

These aren't a name brand expensive battery but after going through several cycles with them with no problems, I really recommend them. They are the perfect dimension for airplane and give me 10-12 minutes of flight time when drained down to 3.5 Volts per cell. The product performs well for the price.

Never had an issue with any of my Zee batteries.

Good powerful battery for RC vehicle

They fit perfectly in the front tray of my 2021 bronco. Lots of punch and enough capacity for a few hours of crawling. My other batteries just sit in the case at home now. My only small complaint after having them for 6 months is that the clear plastic on the outside is starting to peel off a little. I just taped it up for now.If you're crawling with a trx4 just get them and you won't be disappointed.

I have several ZEE brand batteries and they’re all pretty good especially considering their price but these two were a little more expensive so I thought they would be even better but no. They take a long time to balance, the run times I get with them seem very short for being 4200mah but the real kicker is that they seem to lack any punch at all really especially since they’re supposed to be 120c output. Me personally… I’m pretty disappointed. Others might disagree with me? Maybe I got a couple of bad ones?

I bought these a year ago, Feb 15th 2022. One year later they still work great. I take my rig into deep water and mud, despite that getting behind the battery wrap, they still work great. I've recently had 1 of the pair puff up but it was user error. I left it dead, plugged in my car for a whole week. I will be buying more of these.