Efest Slim K2 Dual-Bay USB Battery Charger – Cheapest UK Price

Cheapest UK price. The Efest Slim K2 is a compact dual-bay USB charger for rechargeable lithium-ion cells, with two independent charging channels and built-in protection.

Key features

• Charges two cells simultaneously at up to 1A per bay


• Independent charging channels


• LED charge-status indicators


• Low-voltage cell activation


• Reverse-polarity, short-circuit and overcharge protection


• Micro-USB input: DC 5V/2A

Compatible batteries

Supports many rechargeable Li-ion/IMR cells, including 10440, 14500, 14650, 16340, 16650, 17650, 17670, 18350, 18490, 18500, 18650, 20700, 21700, 25500 and 26650 sizes.

What is included

• 1 × Efest Slim K2 charger


• 1 × micro-USB cable


• 1 × user information

Batteries and mains USB adaptor are not included.

Battery safety

Use only compatible rechargeable cells. Never leave charging batteries unattended, and do not use cells with damaged wraps.