Imren 4‑Bay USB‑C Battery Charger — 18650/21700/26650 Compatible, Selectable 0.5/1/2A Charging

The IMREN 4-bay USB-C charger is a versatile charger that independently refills Li-ion (including 18650/21700) and Ni‑MH/Ni‑Cd cells with selectable 0.5/1/2A charge currents for safe, flexible charging on the go.

This compact USB‑C powered charger accepts a wide range of cylindrical rechargeable cells—from small AA/AAA Ni‑MH cells up to long 26650 Li‑ion batteries—and gives you four independent bays so you can charge any combination of batteries without pairing. Intelligent detection automatically recognizes Li‑ion versus Ni‑MH/Ni‑Cd chemistries and applies the correct charging behavior, while the extra‑long 75 mm slots accommodate larger cells such as 21700 and 26650 models.

How does the charger handle different battery sizes and chemistries?

The IMREN charger detects battery type and configures its charging algorithm accordingly, so Li‑ion and Ni‑MH/Ni‑Cd cells can be charged safely in the same unit. Each bay operates independently, letting you mix sizes and chemistries without forcing pairs or identical cells.

• Auto‑detection of Li‑ion vs Ni‑MH/Ni‑Cd cells
• Independent bays: charge 1–4 cells in any combination
• 75 mm long slots for 21700, 20700, 26650, and shorter cells
• Compatible list: AAAA, AAA, AA, A, 10440, 14500, 16340, 17335, 17500, 18350, 18500, 18650, 18700, 20700, 21700, 22650, 25500, 26650

What charging speeds and controls are available?

You can choose between three current settings—0.5 A, 1 A, and 2 A—so you decide whether to prioritize speed or longevity. The default mode uses 1 A on two slots, and pressing the mode button steps through the available charge rates, including the fast 2000 mA option for quicker top‑ups when needed.

• Three selectable currents: 0.5 A, 1 A, 2 A
• Default two‑slot normal charge at 1 A; toggle to 2 A for rapid charging
• Mode button to change current easily without extra adapters

Can I use this charger while traveling and what power sources work?

The IMREN charger uses a USB‑C input for broad compatibility with modern power sources—phone adapters, power banks, laptops, and car chargers. Its USB‑C connection makes it convenient for travel and international use when paired with the appropriate USB power adapter.

• USB‑C input for universal connectivity and portability
• Works with USB sockets, car chargers, computers, and power banks
• Compact, lightweight design suitable for packing in luggage or tool kits

What safety and user items are included?

The charger includes short‑slot protections, automatic current adjustment to match the input, and detection routines to help prevent improper charging of non‑rechargeable cells. The package contains the charger, a Type‑C cable, and a user manual; always avoid charging disposable batteries.

• Automatic input power sensing and current adjustment
• Protection via intelligent detection to avoid charging incompatible cells
• Package: IMREN 4‑bay charger, Type‑C cable, user manual

Who is this for: The IMREN 4‑bay USB‑C charger is intended for hobbyists, photographers, flashlight enthusiasts, and technicians who use multiple rechargeable cylindrical cells and need flexible, independent charging. If you rely on 18650, 21700, 20700, or a mix of Li‑ion and Ni‑MH cells and want selectable fast charge options plus the convenience of USB‑C power, this charger is a practical choice.