LiitoKala LII-M4 4-Bay Battery Charger

Description

LiitoKala LII-M4 4-Bay Smart Battery Charger

The LiitoKala LII-M4 Battery Charger is a multifunctional 4-slot smart charger designed for charging and testing a wide range of rechargeable cylindrical batteries. It features four independently managed charging channels, an LCD display, selectable charging current, battery capacity testing and multiple safety protection functions.

The charger supports compatible Li-ion and NiMH/NiCd rechargeable batteries, including commonly used 18650, 21700, 26650, 14500, AA and AAA sizes. Different compatible battery sizes can be charged simultaneously because each channel is managed independently.

4 Independent Charging Slots

The LII-M4 has four independent charging bays, allowing users to charge multiple compatible batteries at the same time. Each slot can be monitored independently, making the charger convenient when batteries with different capacities or charge levels are being used.

Multiple Battery Compatibility

The LiitoKala LII-M4 is designed for various cylindrical rechargeable batteries. Supported sizes include:

• 18650
• 21700
• 26650
• 22650
• 18350
• 18500
• 17500
• 16340 / RCR123
• 14500
• 10440
• AA
• AAA
• Other compatible cylindrical sizes

It supports Li-ion and NiMH/NiCd rechargeable battery chemistries.

Important: The charger is not intended for LiFePO4 batteries or non-rechargeable 1.5V lithium batteries.

500mA / 1000mA Charging

The charger provides selectable charging currents. For Li-ion batteries, it supports 500mA × 4 or 1000mA × 2. When using the 1000mA charging mode, only two Li-ion channels can be charged at that current. NiMH/NiCd charging is specified at 500mA per channel.

The charger defaults to 500mA, and the charging current can be selected shortly after inserting the battery.

LCD Display

The built-in LCD display provides useful charging information such as:

• Charging mode
• Test mode
• Battery voltage
• Charging current
• Charging time
• Battery capacity
• Battery percentage
• Channel information

This allows users to monitor charging and testing status conveniently.

Battery Capacity Testing

One of the key features of the LII-M4 4-Bay Battery Charger is its TEST mode.

In test mode, the charger first charges the battery, then discharges it while measuring the discharge capacity, and subsequently charges it again. This provides an indication of the battery’s measured capacity.

The test discharge current is specified as 500mA.

USB Power Bank Function

The LII-M4 also provides a 5V/1A USB output that can be used as a basic power-bank output. According to the manual, the USB output requires a sufficiently charged lithium-ion battery in channel 4.

Type-C Input

The charger uses a USB Type-C 5V/2A input, making it convenient to power from a compatible USB power adapter.

Note: The charger should be supplied with an appropriate 5V/2A power source. Check your package contents before promising a wall adapter in your product listing, because the package list may contain the charger, USB cable and manual rather than an AC adapter.

Safety Protection

The LII-M4 incorporates several protection functions designed to help protect the charger and batteries during normal operation, including:

• Overcharge protection
• Short-circuit protection
• Reverse-polarity protection
• Faulty battery detection
• Over-discharge protection
• Battery voltage monitoring
• Zero-voltage activation function

The charger can identify certain defective batteries and will not charge batteries that fall outside its specified operating conditions.

Compact and Convenient

The charger has an ABS housing and a compact design suitable for home use, workshops, electronics work and travel. One published specification lists dimensions of approximately 146 × 100 × 33 mm.

Ideal for

The LiitoKala LII-M4 Battery Charger is suitable for:

• 18650 battery users
• 21700 battery users
• 26650 battery users
• Flashlight enthusiasts
• Electronics hobbyists
• DIY projects
• Power-tool battery users
• Camera accessories
• Portable electronics
• Battery testing
• Home and workshop use