Boslipo (Arena Version) 11.1v (SM)

The Boslipo (Arena Version) 11.1v is a 3-cell high-discharge LiPo listed as a higher-capacity, high-discharge cell, built for players who want more shots between charges and blasters that go through full games or arena sessions. The Arena Version name signals it's built with sustained arena play in mind.

It's a slim pack, measuring roughly 14cm long, 2cm wide, and 2cm tall, so it's worth checking that against your battery compartment or stock tube before buying if you're working with a tight-fitting build. As with any LiPo, charge it on a balance charger rated for 11.1V 3S packs and store it at storage voltage when it isn't going to be used for a while.