OVONIC3S Lipo Battery 35C 500mAh 11.1V Lipo Battery with JST Connector for RC Airplane Helicopter Quadcopter FPV Racing Drone(2 Packs)

I like how these look. They fit my application, delivered quicker and slightly less priced, all pluses. I also like the balance connector shroud which helps in separating the connectors, long overdue. My heli has a compartment and will only fit up to that size. This battery fit my dimensions and one of like only 2. They're slightly longer and have the jst connector. I needed xt30, hence, (title above). I purchased adapter connectors and the batteries work like a champ. They run a little cooler than original and keep a slightly higher voltage probably due to length difference, like 4mm. I won't hesitate, if this size, voltage/mah and any type connector I need, to buy these again! There's a connector for that.. I recommend them.

The OEM battery is a 2s 500 to 600mah lipo, however, being in the hobby, for over two decades and retired electronic technician from the military had the theory that this would be a suitable upgrade for all the components and give it the right amount of power for the motor, especially on takeoff and to fight the Wind during flight. Due to the wing set up once you're in the air unless you're fighting the winds use very little throttle, however during takeoff and brief moments when there's some Gusts The standard power source wasn't enough. After several test flights all successful did temperature readings and at no point did they exceeded the tolerance of the motor to overheat. I've used the brand in several other builds, including my drones, boats, and cars all have given great performance with no battery SAG or puffy appearance after several charges.

Fits just about perfect for the UMX air tractor. Any bigger and the canopy would need modified.

Battery lead is a little longer than i would have hoped for but all in all a pretty good battery. Feels more like a 450mah pack. I get the same run time as a GnB 450mah 3s. I really cannot feel a difference from 35c to the 80c that GnB is so for what its worth if these are cheaper id choose these. They need an xt30 on them before shipping though. That crappy plug is going to melt with almost 13v charged.

Ovonic makes some of the best lipo batteries on the market. Very good power and low heat buildup when flying in small RC planes.