Boslipo (Tactical Version) 11.1v 1200 mAh (JM ACR)

Purpose-shaped for the JM ACR, this Boslipo Tactical Version pack is an 11.1v (3S) 1200mAh lipo with a 25C high discharge rating, delivering the sustained current a JM ACR's motor needs without the sag you'd get from an undersized or mislabelled pack. It's part of the same Tactical Boslipo range as the brand's other connector and voltage variants, but this one is built around the ACR's specific stock cavity.

The shape is tapered rather than a plain rectangular block: 13cm long, with the thick side measuring 2cm (width) x 2cm (height) and the thin side narrowing to 1cm x 1cm. That taper is what lets it seat properly inside the ACR's stock, so it's not a like-for-like swap into other blasters even if the voltage and mAh match. Check your stock cavity shape before ordering if you're unsure.