Review on AWANFI 3S Lipo Battery 11.1V 5000MAh 60C RC Battery Pack With XT90 Plug For RC Cars Truck Boat Airplane(2 Packs) by Chris Rigsby

These batteries are a little shorter than my traxxas 5000mah batteries and taller than the traxxas batteries so you need to remove factory hold down and use the supplied battery strap. It is in a hard plastic case which is nice. It's a little heavier than the Traxxas battery, but I'm using it in my trail rig so it's fine. Lasted the entire 4 hour trail run and had great throttle punch on demand when needed. I have Hobbywing AXE550 3300KV brushless system in my trx4 and it works well with this battery.