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REACELL 18650 Battery Charger Review: Fast, universal charging for Li-ion batteries

REACELL 18650 Battery Charger, Universal Fast Dual Charge Battery Charger for 3.7V/3.6V Li-ion Rechargeable Batteries 18650 18500 18490 18350 17670 17500 16340(RCR123) 14500 26650 22650 with USB Cable
4.6
[Universal Compatibility]  Supports wide range of 3.6V/3.7V Li-ion cells including 10440–26650 and 16340–21700.
[Intelligent Charging]  High-precision pulse control with trickle, constant current, and constant voltage charging for safer battery care.
[Multi-layer Protection]  Built-in overcurrent, overcharge, overvoltage, short-circuit, and overheat protection for maximum safety.
[LED Charge Indicators]  Dual-slot blue LEDs show 25%/50%/75% progress and steady 100% to indicate full charge.
[Compact USB Design]  USB-powered, lightweight, and portable; works with adapters, power banks, and laptops for on-the-go charging.
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Camera accessory designed to recharge common 3.6V and 3.7V Li-ion cells quickly and safely. Peace of mind for photographers and hobbyists who rely on spare batteries during shoots. Is the REACELL 18650 Battery Charger the compact, reliable charger worth carrying?

⚡ At a Glance
  • Charging Performance: High-precision pulse control cycles through trickle, constant current and constant voltage phases for steady charging.
  • Best for: Photographers, hobbyists and households needing quick turnaround on spare Li-ion cells.
  • Not ideal for: Users who need to charge more than two batteries at high current simultaneously.

Intelligent pulse charging manages charge phases to restore cells safely. Built-in protections and LED progress indicators aid monitoring and heat control.


Quick revival for dead cells – Thanks to high-precision intelligent pulse charging control

High-precision intelligent pulse charging control applies a trickle phase followed by constant current and then constant voltage to bring cells safely back to full charge. Pulse control moderates current to limit heat while restoring deeply discharged batteries.

Fast top-ups reduce downtime during shoots, with user reports of full charges in under two hours for many cells.

Works with a wide range of sizes – With universal slots accepting many Li-ion formats

Dual independent slots accept formats from small 10440 to large 26650 cells and handle nominal voltages of 3.6V and 3.7V. The slot design aligns different cell diameters securely for reliable contact.

One charger covers spares for cameras, flash units and handheld torches, so fewer separate chargers are needed.

Safety-first charging – With multiple circuit protections and clear LED progress indicators

Built-in circuit protection guards against overcurrent, overcharge, overvoltage, short circuits and overheating while blue LEDs indicate charge progress at 25%, 50%, 75% and 100%.

Protected charging keeps batteries cool and avoids overcharging, helping preserve battery lifespan and giving confidence during repeated use.

✨ The 4 Key Reasons for REACELL 18650 Battery Charger
  1. Fast intelligent charging – Restores depleted Li-ion cells in under two hours
  2. Wide battery compatibility – Accepts 10440 through 26650 sizes for flexible use
  3. Comprehensive safety protections – Overcurrent, overcharge and short-circuit protections keep batteries safe
  4. USB-powered portability – Charges from power banks, laptops or USB adapters while travelling
📋 Technical Details at a Glance
  • Supported battery types: 10440, 14500, 14650, 16340 (RCR123), 17500, 17670, 18350, 18490, 18500, 18650, 20700, 21700, 22650, 25500, 26500, 26650
  • Nominal cell voltage: 3.6V / 3.7V
  • Charging modes: Trickle, constant current, constant voltage
  • Protection features: Overcurrent, overcharge, overvoltage, short circuit, overheat
  • LED indicators: Blue progress LEDs showing 25% / 50% / 75% / 100%
❓ Frequently Asked Questions

Q: Which battery sizes are compatible with the charger?

A: Compatible sizes include 10440, 14500, 14650, 16340 (RCR123), 17500, 17670, 18350, 18490, 18500, 18650, 20700, 21700, 22650, 25500, 26500 and 26650.

Q: What safety protections are built in?

A: Built-in circuit protection covers overcurrent, overcharge, overvoltage, short circuit and overheat protections to reduce risk while charging.

Q: Can the charger be used with a power bank or laptop?

A: Yes, the USB interface allows connection to USB adapters, power banks and notebooks for charging on the move.

🏆 Our Verdict

The REACELL 18650 Battery Charger suits photographers, hobbyists and anyone who relies on multiple Li-ion spares and needs quick turnarounds. Intelligent pulse charging, broad size compatibility and multiple safety protections make it a reliable everyday accessory. Compact form and USB power make it a practical, long-term addition to kit bags and workbenches, offering good value through convenience and safety.