Lancer Tactical 11.1v 1200 mAh 20C Mini LiPO Battery, Deans, Black

You need 11.1V to get that snappy trigger response and faster cycle times, but most full-size packs won't fit in a compact receiver or tight buffer tube. This is the tradeoff: you get the voltage bump in a smaller, lighter package, and you accept that 1200 mAh means you'll be swapping batteries more often than you would with a bigger capacity pack.

Capacity and discharge. 1200 mAh at 11.1V (3S) with a 20C continuous discharge rating. That's enough to power a standard AEG comfortably, but it's not the pack you want for a heavy-spring build or a gun that runs a high-rate motor. Think of it as the right choice when fit matters more than runtime and the spring weight is moderate.

Connector. Mini Deans (T-plug) on both ends. Match it to your gun's wiring — most modern AEGs use full-size Deans, so you'll want a Deans-to-mini-Deans adapter if yours doesn't already wire to mini. The adapter is cheap and takes seconds to swap.

Before you buy. This is an 11.1V LiPO — only run it in a gun with a MOSFET. Without one, the higher voltage arcs across the mechanical trigger contacts and burns them out fast. Charge with a LiPO balance charger only; a standard smart charger will destroy the pack. Store it between 35° and 70° F, out of direct sun, and don't leave it sitting fully charged or run it flat. Battery only — charger sold separately.

If you need the voltage boost but your gun's battery compartment is tight, this is what you reach for. Just plan on carrying a spare.