EBL 18650 Battery Charger Universal Lithium Charger for 3.7V Rechargeable
Quick take
This universal USB charger is made for 3.7V Li-ion batteries, supporting either one or two cells at a time. It uses a smart LED display to show charging status and includes MCU-based constant-current/constant-voltage charging plus multiple protection features. The main caveat is that charger behavior can vary by battery type, and the review evidence is limited, including at least one report of batteries not charging.
Pros and cons
Pros
- Universal compatibility for common 3.7V formats, including 18650 and smaller sizes like 10440 and 14500.
- Smart LED indicator changes color when charging completes.
- Designed with constant-current/constant-voltage (CC/CV) charging control.
- Built-in protections include overcharge, reverse polarity, and short-circuit protection.
Cons
- Uses a USB power setup (Micro-USB), which may feel less convenient than direct wall charging for some buyers.
- Charging can be battery-type sensitive, and limited reviews include an instance where cells did not charge.
What buyers think
Buyer-review evidence is too limited to reliably map a consistent satisfaction pattern beyond broad “works/doesn’t work” outcomes. Across the available reviews, some buyers report the charger works for 3.7V lithium batteries and operates as expected right out of the box. Other feedback is more mixed, including at least one case where the charger did not charge the inserted battery after extended time.
What this charger is, and who it’s for
The EBL charger is designed to recharge 3.7V Li-ion batteries (often labeled IMR, INR, and ICR) in a range of popular sizes. If you keep devices that use 18650-class cells, plus smaller “camera light” or compact battery formats (like 14500 or 10440), a single charger that supports many common sizes can reduce clutter.
Key specs that matter in real use
Battery compatibility (3.7V Li-ion, many form factors)
This model is intended for 3.7V rechargeable Li-ion cells, including sizes such as 18650, 18490, 18500, 18350, 17670, 16340, and 14500, plus RCR123A and 10440. It can charge one battery slot at a time or use both slots together for two batteries.
Charging behavior and indicators
It uses a smart LED display, where charging begins automatically when you plug it in, and the LED turns from red (charging) to green (full charge). That makes it easier to avoid leaving cells in the charger longer than needed.
Charging control and safety protections
The charger uses MCU control technology and is set up for precision constant current and constant voltage charging (a common approach for Li-ion reliability). It also includes multiple protections, including overcharge protection, reverse polarity protection, and short-circuit protection.
Power style and portability
Unlike chargers that plug directly into a wall outlet, this one is USB powered. It’s meant to work with USB wall adapters, car chargers, power banks, or other USB-compatible sources. The charging cable uses a Micro-USB connector, which can be a plus for travel setups, but less convenient if you prefer a straight wall plug.
Pros and cons summary
Best fit: buyers who need a compact, USB-powered charger for 3.7V Li-ion cells across multiple common sizes, and who want LED status visibility for charging progress.
Potential mismatch: if you want a direct wall-plug charger with no cable involvement, or if your battery types are unusual enough that compatibility is a concern. Review evidence is limited, so if you have specific cells you rely on, it can help to double-check that they match the charger’s 3.7V Li-ion target and format.
Verdict
The EBL 18650 universal USB charger is a practical option for charging common 3.7V Li-ion formats in and around 18650-family devices, with clear LED charging status, CC/CV control, and safety protections. It’s especially appealing if you prefer charging from USB power while traveling. The biggest buying caveat is that limited review coverage includes at least one “no charge” experience, so compatibility with your specific cells is worth confirming before you depend on it.
FAQ
Does this charger work with 3.7V lithium batteries?
It’s designed for 3.7V rechargeable Li-ion batteries and is compatible with formats commonly used in 18650-class devices, including smaller sizes like 14500, 10440, and RCR123A.
Can it charge one battery or two batteries at the same time?
Yes. It supports charging for either one battery or two batteries, using two charging ports.
How do the LED lights indicate charging status?
The charger starts automatically when plugged in, with a red indicator showing charging in progress. The light transitions to green when the battery reaches full charge.
Is this charger USB powered or a wall-plug charger?
It’s USB powered using a Micro-USB connector, so it can run from USB wall adapters, car chargers, power banks, or other USB-compatible devices.
What safety features does it include?
It includes multi-protection safeguards such as overcharge protection, reverse polarity protection, and short-circuit protection.
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Specifications
| Product Title | EBL 18650 Battery Charger Universal Lithium Charger for 3.7V Rechargeable Batteries Li-ion IMR 10440 14500 16340 18650 RCR123A Batteries |
|---|---|
| Category | Electronics > Household Batteries, Chargers & Accessories > Battery Chargers |
| Brand | EBL |
| Manufacturer | DONGGUAN BESTON DIGITAL TECHNOLOGY CO,. LTD |
| Model Number | C839 |
| Color | White |
| Product Dimensions | 4.8"D x 1.78"W x 3"H |
| Output Voltage | 4.2 Volts |
| Input Voltage | 5 Volts |
| Current Rating | 450 Milliamps |
| Amperage | 450 Milliamps |
| Compatible Devices | Wall adapters, car chargers, power banks, USB-compatible devices |
| Connector Type Used on Cable | Micro-USB |
| Number of Ports | 2 |
| Item Dimensions D x W x H | 4.8"D x 1.78"W x 3"H |
| Mfr Part Number | CL0000028-H |
| Global Trade Identification Number | 00810161768400 |
| Warranty Description | One-year limited warranty |
| Unit Count | 1.0 Count |
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