Wangdajiedian USB 18650 Battery Charger
- Number Of Ports: 1
- Output Voltage: 3.7 volts
- Amperage: 0.6 amps
- Current Rating: 0.6 A
Last refreshed Sep 7, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
A compact, travel-friendly option for topping up one loose lithium-ion cell at a time, provided you already know it does not cover AA, AAA or NiMH chemistries.
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ASIN: B0BFCKX5FLCategory: Battery Chargers
Overview
A single-slot USB charger for 3.7V lithium-ion cells, covering sizes from 10440 up through 18650, 18700 and 25500. Battery not included, and it is built for lithium-ion only, not NiMH or alkaline cells.
Because it runs off Micro-USB rather than a wall plug, it can draw power from a car charger, power bank or laptop instead of an outlet. The tradeoff for that flexibility is a single charging slot and a capped 600mA current, so it is built for topping up one cell at a time rather than a full battery collection.
- Single-slot Micro-USB lithium-ion charger
- Fits 10440, 14500, 16340, 17500, 18500, 18650, 18700 and 25500 cells
- 600mA max charging current per slot
- Red/green LED shows charging and full status
Who it's for
Useful for flashlight, headlamp or camera owners who keep a spare 18650-family cell on hand and want a compact way to top it up anywhere with a USB port. Not the right pick for anyone charging AA, AAA or NiMH batteries.
Pros and cons
- Covers a wide range of lithium-ion sizes from 10440 to 25500
- Runs off any USB power source, not just a wall outlet
- Stops charging automatically once the cell is full
- Only one slot, so cells charge one at a time
- 600mA cap means larger cells take a while to fill
- Not compatible with NiMH, NiCd or AA/AAA batteries
Performance notes
The single slot tops out at 600mA of charging current, with the LED glowing red while charging and switching to green once the cell is full; charging stops automatically at that point rather than continuing to trickle. Built-in protection covers overcharge, over-discharge, short circuit, reverse polarity and temperature, and the case is PC+ABS plastic rated for heat and scratch resistance. Power comes in over Micro-USB, so it can run from a wall adapter, car charger, power bank or laptop port.
Specifications
| Brand | Wangdajiedian |
|---|---|
| Dimensions & fit | |
| Item Dimensions D X W X H | 4.2 × 1.2 × 1.4 inches |
| Capacity & performance | |
| Output Voltage | 3.7 volts |
| Power & efficiency | |
| Amperage | 0.6 amps |
| Input Voltage | 5 volts |
| Construction & materials | |
| Color | Black |
| Compatibility & installation | |
| Compatible Devices | Devices With Micro-USB Port |
| Included components | |
| Number Of Packs | 1 |
| Unit Count | 1 |
| Warranty & support | |
| Warranty Description | 1 year |
| Other details | |
| Number Of Ports | 1 |
| Current Rating | 0.6 A |
| Number Of Items | 1 |
| Connector Type Used On Cable | Micro USB |
| Mfr Part Number | WD-BC-001 |
| Specification Met | FCC |
Frequently asked questions
Does this charger work with AA or AAA rechargeable batteries?
No, it is built for 3.7V lithium-ion cells like 18650, not NiMH, NiCd or standard AA/AAA batteries.
Can this charger run off a power bank instead of a wall outlet?
Yes, it charges over Micro-USB, so a power bank, car charger or laptop port will work.
How many batteries can it charge at once?
One. It has a single charging slot.