Efest K4 Slim Li-ion USB Charger
The Slim K4 will automatically charge your battery cells a few seconds after they are installed. The indicator shows blue when in standby mode or the batteries are fully charged. The indicator will show white when the battery cells are charging.
Auto-detect charging current: 1 x 1.0A / 2 x 1.0A / 3 x 0.5A / 4 x 0.5A
Safe charging mode: CC & CV | Safe and convenient USB charger (5V 2A)
Monitors and charges each slot independently | Low voltage smart activation recovery function
Super lightweight and portable
The built-in intelligent chip comes with six protections.
Short circuit protection | Automatic overcharging protection
Automatic over-discharge protection | Reverse polarity protection
0V activation recovery function | Hardware and software double protection.