Overview

EnergyPack 757B21 is an external, interchangeable lithium-ion battery that has a charge that lasts up to three days. Smaller than EnergyPack 757B20, it is the ideal choice for patients with long residual limbs or when weight and size are a consideration.

757B21 EnergyPack (small) is:

Appropriate for 6/7.2 Volt MyoBock Adult Systems
Slightly smaller than 757B20-1 and weighs only 51 g
800n mAh capacity
Recharges in approximately 3.0 hours
Available in colors: 4 (757B21), 11 (757B21-1), 15 (757B21-2) and Black (757B21-3)

Specifications

Article number	Color	Weight	Capacity	Charging time (full charge)	Technology	Length
757B20	4 (beige)	65 g	900 mAh	ca. 3.5 h	Lithium-ion	2 3/4 in.
757B20-1	11 (light brown)	65 g	900 mAh	ca. 3.5 h	Lithium-ion	2 3/4 in.
757B20 -2	15 (dark brown)	65 g	900 mAh	ca. 3.5 h	Lithium-ion	2 3/4 in.
757B20 -3	Black	65 g	900 mAh	ca. 3.5 h	Lithium-ion	2 3/4 in.
757B21	4 (beige)	51 g	800 mAh	ca. 3.0 h	Lithium-ion	2 1/8 in.
757B21-1	11 (light brown)	51 g	800 mAh	ca. 3.0 h	Lithium-ion	2 1/8 in.
757B21-2	15 (dark brown)	51 g	800 mAh	ca. 3.0 h	Lithium-ion	2 1/8 in.
757B21-3	Black	51 g	800 mAh	ca. 3.0 h	Lithium-ion	2 1/8 in.