The All-in-One Solution for Battery Management

At Sun Cheong Computer, we understand that reliable power is crucial for everything from gaming mice to high-end flashlights. The LiitoKala Lii-M4S isn't just a charger; it is a complete battery management system designed to extend the life of your rechargeable cells.

Smart Touch Control & Real-Time Monitoring

Gone are the clunky buttons of the past. The Lii-M4S features a sleek, responsive touch control panel. The high-contrast LCD screen provides real-time data for each slot independently, displaying Voltage (V), Current (mA), Time (h), and Capacity (mAh). You will know exactly how much power your battery holds.

"Storage Mode": The Battery Saver

Most batteries degrade because they are stored fully charged or completely empty. The Lii-M4S features a professional Storage Mode.

• How it works: It automatically charges or discharges your Li-ion battery to the optimal 3.7V voltage.
• The Benefit: This prevents battery swelling and capacity loss during long periods of non-use—perfect for seasonal gear like drones or backup flashlights.

Professional Capacity Testing (Test Mode)

Do you suspect your old batteries are losing their edge? The Test Mode runs a full "Charge-Discharge-Charge" cycle to measure the actual discharge capacity of the battery. This allows you to identify weak cells and match healthy ones for balanced performance in multi-battery devices.

Universal Compatibility & Power Bank Feature

Whether you use 18650, 21700, 26650 Li-ions, or standard AA/AAA NiMH batteries, the independent 4-channel system handles them all simultaneously. Plus, by inserting a charged Li-ion battery into Slot 4, the unit converts into a 5V USB Power Bank to charge your phone in an emergency.