
Efest Mega USB Li-ion battery and AA/AAA Battery Charger
The Efest Mega USB 2-Channel Charger is your ultimate charging companion, designed to handle a wide range of battery types with ease. Powered via USB, this versatile charger supports both Li-ion batteries, including 18650, 20700, 21700, and 26650, as well as Ni-MH batteries like AA and AAA. Its compact design and dual-channel functionality make it an excellent choice for both home and travel use, ensuring your devices stay powered up whenever you need them. With independent slot monitoring and advanced safety features, the Efest Mega offers a reliable, efficient, and user-friendly charging experience.
Key Features:
- Dual Charging Channels: Independently charge two batteries at variable speeds—1.0A for batteries longer than 63mm or 0.5A for shorter ones—maximizing efficiency.
- Broad Compatibility: Supports a wide range of battery types, including 3.6V/3.7V Li-ion (from 10440 to 26650) and Ni-MH/Ni-Cd batteries (AAAA to C size), offering universal charging solutions.
- Independent Slot Monitoring: Each channel operates independently, allowing you to charge different battery types simultaneously for added convenience.
- Enhanced Safety Features: Includes reverse polarity protection to prevent damage from incorrect battery insertion, ensuring safe and reliable charging.
- USB-Powered Portability: Lightweight and portable, complete with a USB power cable, making it ideal for travel and on-the-go charging needs.
Battery Compatibility:
- 3.6V/3.7V Lithium-Ion Batteries: 10440, 14500, 14650, 16340, 16650, 17650, 17670, 18350, 18490, 18500, 18650, 20700, 21700, 22650, 26500, 26650
- Ni-MH/Ni-Cd 1.2V Batteries: AAAA, AAA, AA, A, SC, C, F6
Technical Specifications:
- Input: AC 100~240V 50/60Hz; DC 5V 2A
- Output: 4.2V = 2x1.0A, 2x0.5A
- Battery Output Cutoff Voltage: Li-ion 4.2 ± 0.05V; Ni-MH/Ni-Cd 1.5V ± 0.1V
- Size/Type Compatibility: ✔ 18650, ✔ 20700, ✔ 21700
What’s in the Box:
- Efest Mega USB Charger
- USB Cord
- User Manual with Warranty Service
- Scratch-Off Validation Serial Number

Original: $10.99
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Efest Mega USB Li-ion battery and AA/AAA Battery Charger
The Efest Mega USB 2-Channel Charger is your ultimate charging companion, designed to handle a wide range of battery types with ease. Powered via USB, this versatile charger supports both Li-ion batteries, including 18650, 20700, 21700, and 26650, as well as Ni-MH batteries like AA and AAA. Its compact design and dual-channel functionality make it an excellent choice for both home and travel use, ensuring your devices stay powered up whenever you need them. With independent slot monitoring and advanced safety features, the Efest Mega offers a reliable, efficient, and user-friendly charging experience.
Key Features:
- Dual Charging Channels: Independently charge two batteries at variable speeds—1.0A for batteries longer than 63mm or 0.5A for shorter ones—maximizing efficiency.
- Broad Compatibility: Supports a wide range of battery types, including 3.6V/3.7V Li-ion (from 10440 to 26650) and Ni-MH/Ni-Cd batteries (AAAA to C size), offering universal charging solutions.
- Independent Slot Monitoring: Each channel operates independently, allowing you to charge different battery types simultaneously for added convenience.
- Enhanced Safety Features: Includes reverse polarity protection to prevent damage from incorrect battery insertion, ensuring safe and reliable charging.
- USB-Powered Portability: Lightweight and portable, complete with a USB power cable, making it ideal for travel and on-the-go charging needs.
Battery Compatibility:
- 3.6V/3.7V Lithium-Ion Batteries: 10440, 14500, 14650, 16340, 16650, 17650, 17670, 18350, 18490, 18500, 18650, 20700, 21700, 22650, 26500, 26650
- Ni-MH/Ni-Cd 1.2V Batteries: AAAA, AAA, AA, A, SC, C, F6
Technical Specifications:
- Input: AC 100~240V 50/60Hz; DC 5V 2A
- Output: 4.2V = 2x1.0A, 2x0.5A
- Battery Output Cutoff Voltage: Li-ion 4.2 ± 0.05V; Ni-MH/Ni-Cd 1.5V ± 0.1V
- Size/Type Compatibility: ✔ 18650, ✔ 20700, ✔ 21700
What’s in the Box:
- Efest Mega USB Charger
- USB Cord
- User Manual with Warranty Service
- Scratch-Off Validation Serial Number

Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
The Efest Mega USB 2-Channel Charger is your ultimate charging companion, designed to handle a wide range of battery types with ease. Powered via USB, this versatile charger supports both Li-ion batteries, including 18650, 20700, 21700, and 26650, as well as Ni-MH batteries like AA and AAA. Its compact design and dual-channel functionality make it an excellent choice for both home and travel use, ensuring your devices stay powered up whenever you need them. With independent slot monitoring and advanced safety features, the Efest Mega offers a reliable, efficient, and user-friendly charging experience.
Key Features:
- Dual Charging Channels: Independently charge two batteries at variable speeds—1.0A for batteries longer than 63mm or 0.5A for shorter ones—maximizing efficiency.
- Broad Compatibility: Supports a wide range of battery types, including 3.6V/3.7V Li-ion (from 10440 to 26650) and Ni-MH/Ni-Cd batteries (AAAA to C size), offering universal charging solutions.
- Independent Slot Monitoring: Each channel operates independently, allowing you to charge different battery types simultaneously for added convenience.
- Enhanced Safety Features: Includes reverse polarity protection to prevent damage from incorrect battery insertion, ensuring safe and reliable charging.
- USB-Powered Portability: Lightweight and portable, complete with a USB power cable, making it ideal for travel and on-the-go charging needs.
Battery Compatibility:
- 3.6V/3.7V Lithium-Ion Batteries: 10440, 14500, 14650, 16340, 16650, 17650, 17670, 18350, 18490, 18500, 18650, 20700, 21700, 22650, 26500, 26650
- Ni-MH/Ni-Cd 1.2V Batteries: AAAA, AAA, AA, A, SC, C, F6
Technical Specifications:
- Input: AC 100~240V 50/60Hz; DC 5V 2A
- Output: 4.2V = 2x1.0A, 2x0.5A
- Battery Output Cutoff Voltage: Li-ion 4.2 ± 0.05V; Ni-MH/Ni-Cd 1.5V ± 0.1V
- Size/Type Compatibility: ✔ 18650, ✔ 20700, ✔ 21700
What’s in the Box:
- Efest Mega USB Charger
- USB Cord
- User Manual with Warranty Service
- Scratch-Off Validation Serial Number
























