Metama Lii-L2 Charger

The Metama Lii-L2 (manufactured in collaboration with or licensed by LiitoKala) is a compact, smart 2-slot battery charger specifically designed for 3.7V Li-ion (Lithium-ion) rechargeable batteries.

Here is a clear and concise technical overview of its features:

⚙️ Technical Specifications

• Power Input: Standard Micro-USB port (DC 5V / 1A minimum). It can be powered using a smartphone charger, a PC USB port, or a power bank.

• Charging Current (Output):

  • 500 mA per slot when two batteries are charging simultaneously.

  • 1000 mA if only one slot is being used (depending on your USB power adapter).

• Cut-off Voltage: 4.20V (automatically stops charging when the battery is completely full).

• Independent Slots: The 2 channels operate completely independently, allowing you to charge a single battery or two different sizes at the same time.

???? Battery Compatibility

Thanks to its spring-loaded sliding negative contacts, it accommodates most cylindrical Li-ion (3.6V / 3.7V) formats:

• 18650 (the most common size)

• 21700 / 20700 (unprotected models only, due to physical length limits)

• 26650 / 22650

• 14500 / 16340 (RCR123A) / 18350 / 18490

⚠️ Important Warning: The Lii-L2 is designed exclusively for Li-ion batteries. It does not support Ni-MH / Ni-Cd batteries (such as standard 1.2V AA or AAA rechargeable household batteries) or LiFePO4 batteries (3.2V).

????️ Protections and Display

• Simple LED Indicators: Each slot features a dual-color LED:

  • ???? Red: Currently charging.

  • ???? Green: Charging complete or slot is empty.

• Built-in Safety Features:

  • Reverse polarity protection (safeguards the device if a battery is inserted backward).

  • Short-circuit and overcurrent protection.

  • Fire-retardant ABS plastic housing.