
BEI · MUL20A · South Korea · 2026
Explore the BEI MUL20A lithium-ion pouch battery cell including capacity, mass, energy density and performance data. Compare specifications and simulate battery behaviour using validated models in the Voltt.
519Wh/kg
2459W/kg
Top-level spec data shown here is directly from the manufacturer. Modelled and experimental metrics - including energy density, power density, TEL and discharge curves - are available through our simulation tools.
Other Pouch cells with comparable specific energy and power.
Same form factor. Nearest neighbours by energy and power density.

BEI is a South Korean manufacturer of anode-free lithium-metal battery cells that use an ultra-thin protective coating in place of a conventional anode. Its large-format cells deliver both high energy and high power density, claimed to be up to 46% lighter than equivalent Li-Po, and operate from -35 to 73 degrees Celsius. The anode-free design targets weight-critical platforms such as military and commercial drones and robotics.
Explore other battery cells in the Voltt database
Explore other cells
BEI · MUL20A · South Korea · 2026
Explore the BEI MUL20A lithium-ion pouch battery cell including capacity, mass, energy density and performance data. Compare specifications and simulate battery behaviour using validated models in the Voltt.
519Wh/kg
2459W/kg
Top-level spec data shown here is directly from the manufacturer. Modelled and experimental metrics - including energy density, power density, TEL and discharge curves - are available through our simulation tools.
Other Pouch cells with comparable specific energy and power.
Same form factor. Nearest neighbours by energy and power density.

BEI is a South Korean manufacturer of anode-free lithium-metal battery cells that use an ultra-thin protective coating in place of a conventional anode. Its large-format cells deliver both high energy and high power density, claimed to be up to 46% lighter than equivalent Li-Po, and operate from -35 to 73 degrees Celsius. The anode-free design targets weight-critical platforms such as military and commercial drones and robotics.
Explore other battery cells in the Voltt database
Explore other cells