Body

The motors, gears, hands and battery that make it move.

Joint actuators, model not namedIn-houseOur estimateConfirmed

The motor units that move each joint; the company does not give them a model name. The K1 has 22 motorised joints: 6 in each leg, 4 in each arm and 2 in the neck. Booster gives a peak of 60 newton metres of twisting force and two position sensors per joint, but does not name the motor model.

Part priceOur estimateUS$300 to US$900 each

Based on: Booster does not name or sell the T2's joint actuators, so this is not their price. It is the price of comparable joint actuators a builder can buy, from about US$300 to US$400 for wrist and head size units around 22 to 25 Nm, up to about US$900 for leg size units with about 120 Nm of peak torque. None of them quite reach the T2's 135 to 144 Nm hip and knee figures, so a T2-class leg joint could cost more.

Price checked 20 Oct 2026

Made by: Not named
Applies to: All versions
Sources
Checked: 1 Nov 2026

Every robot using Joint actuators, model not named

Joint actuators, model not namedIn-houseOur estimateConfirmed

The motor units that move each joint; the company does not give them a model name. Booster's published robot model file sets joint force limits from 6 newton metres in the neck and 14 in the arms up to 68 at the hip and 112 at the knee. These model limits are higher than the 60 newton metre peak on the product page.

Part priceOur estimate

Not disclosedBooster does not say what gears or bearings sit inside the K1's joints.

Booster does not say what gears or bearings sit inside the K1's joints.

We looked at
Checked: 1 Nov 2026

K1 arm end, no handConfirmed

The rounded end of each K1 arm: the K1 has no hands or fingers. The K1 has no hands. Each arm has 4 joints and ends in a rounded tip with no fingers.

Made by: In-house
Applies to: All versions
Sources
Checked: 1 Nov 2026

Every robot using K1 arm end, no hand

K1 magnetic battery, 5 AhConfirmed

Booster's own lithium battery for the K1, charged through a magnetic plug while it stays in the robot. The Education and Professional editions carry a 5 Ah battery good for about 70 minutes of walking at 1.1 metres per second; the Geek edition has a 2 Ah battery for about 20 minutes. It charges in 2 hours or less through a magnetic plug, can charge while in use, and lasts at least 500 charge cycles.

Made by: In-house
Applies to: All versions
Sources
Checked: 1 Nov 2026

Every robot using K1 magnetic battery, 5 Ah

Booster K1

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