18650 Battery Charger,2 Bay LCD Display Universal Charger for 3.7V/3.6V
Quick take
This 2-bay USB-C charger is built for mixed rechargeable cylindrical batteries, including 3.7V/3.6V Li-ion cells (such as 18650 and 21700) and 1.2V Ni-MH/Ni-Cd AAs and AAAs. The LCD display tracks voltage, current, estimated charge time, and charge progress per bay, with independent charging and automatic shutoff when full. The main tradeoff is battery retention: if a cell is not seated carefully, it can eject when nudged, so it is better suited to careful desk-top charging than rough handling.
Pros and cons
Pros
- 2 independent charging bays, so you can charge different batteries without them interfering.
- LCD screen shows key charging details like voltage, charge rate (current), charge time, and battery percentage.
- Supports both 3.6V/3.7V Li-ion and 1.2V Ni-MH/Ni-Cd AA/AAA cells, plus many common cylindrical sizes.
- Automatic stop when fully charged and includes overheat protection.
Cons
- Some users report batteries may eject if not seated firmly, especially if the charger is nudged.
- USB-C power support may be limited to non-PD setups, with users noting it may not work with USB-C PD cables/adapters.
What buyers think
Buyer-review evidence is limited in volume, but the recurring themes point to easy day-to-day use and clear status information. Multiple shoppers mention that charging starts immediately after inserting the cell, the LCD is readable enough to confirm what is happening at a glance, and the charger correctly detects chemistry/type and charges appropriately. Reviewers also highlight independent behavior between bays, compact desk-friendly design, and straightforward USB-C powering (with at least one note that it appears to work best with a simple 5V input rather than USB-C PD). The most consistently mentioned usability concern is battery seating and how well cells stay in place if the unit is moved or brushed.
Compatibility and charging modes, explained
This is a “universal” style charger intended for two broad categories of rechargeable cells:
- 3.6V/3.7V Li-ion cylindrical batteries: including popular sizes such as 18650, 21700, and 26650, plus other listed formats like 14500 and 16340 (RCR123), among others.
- 1.2V Ni-MH and Ni-Cd cells: supported via AA and AAA battery forms.
It also uses intelligent detection so you do not have to manually select chemistry for each bay. Each bay is designed to charge independently, which matters if you frequently mix cells (for example, charging an 18650 and a different size at the same time).
LCD display, what you get per bay
The charger includes a built-in LCD intended to reduce guesswork. Buyers who focus on usability tend to like that you can monitor the session, not just see a simple “charging complete” indicator. Typical readouts mentioned include:
- Current voltage level
- Charge rate (current)
- Charge time estimate/progress indicators
- Battery charge percentage and chemistry/type information
Because each bay operates on its own, the screen helps you keep track of what each slot is doing.
Power and charging speed: what to expect
The charger is designed to run from USB-C with an input of 5V (DC) . The charger’s stated charging time is about 2 hours (battery-dependent, of course).
Safety features and build details
Safety is addressed with a few protective mechanisms:
- Automatic stop when fully charged
- Overheat protection that shuts the charger down if it detects overheating
Physically, the charger is compact and includes metal rails for slide-in contact. That said, battery stability is not purely a mechanical issue, since user feedback suggests you should seat cells carefully and avoid nudging the unit while batteries are installed.
Pros and cons recap
Good fit if you want: a simple 2-bay desk charger for frequently used cylindrical Li-ion cells (like 18650/21700) and occasional Ni-MH/Ni-Cd AA/AAA charging, with an LCD that shows more than basic LED status.
Not ideal if you need: guaranteed compatibility with USB-C PD power bricks, or if you tend to move the charger around while cells are inserted. If you want something that locks cells more firmly for rougher handling, it may take extra care to avoid accidental ejection.
Verdict
The 2-bay 18650 Battery Charger with LCD display is a practical choice for anyone who wants clearer charging visibility and supports both common 3.7V Li-ion cylindrical batteries and 1.2V AA/AAA Ni-MH/Ni-Cd cells. If your priority is simple, independent charging and readable status screens, it should fit well. Just be mindful about battery seating and power source type, particularly if you plan to rely on USB-C PD chargers and C-to-C cables.
FAQ
Does this charger work with both Li-ion and Ni-MH/Ni-Cd batteries?
Yes. It supports 3.6V/3.7V Li-ion cylindrical batteries and also charges 1.2V Ni-MH/Ni-Cd AA and AAA batteries. It uses intelligent detection so you do not need to manually select chemistry per bay.
How many batteries can it charge at once?
It has two charging bays, and each bay charges independently. That lets you charge different supported battery types or sizes at the same time.
What does the LCD display show?
The LCD is designed to show charging details such as voltage and current, along with charge progress information (including a percentage/level indicator and charge time estimate) per bay.
Does it stop automatically when a battery is full?
Yes. The charger includes automatic stop when the battery reaches a full charge, and it also includes overheat protection.
What power source does it use?
It uses a USB-C input designed for 5V DC power. Some users note it may not behave the same with USB-C PD power setups, so a standard 5V adapter or compatible cable is the safer expectation.
Do I need to worry about battery fit or staying in the slot?
For best results, insert cells carefully and avoid nudging the charger while batteries are installed. Some users report that batteries can eject if they are not seated securely.
Is the charger stand-alone, or does it include batteries?
This is a charger-only product. Batteries are not included.
Specifications
| Product Title | 18650 Battery Charger,2 Bay LCD Display Universal Charger for 3.7V/3.6V Li-ion Batteries 26650 21700 18650 16340(RCR123) 14500 10400,1.2V Ni-MH/Ni-Cd AA AAA Batteries(Battery not Included) |
|---|---|
| Category | Electronics > Household Batteries, Chargers & Accessories > Battery Chargers |
| Brand | MLKJHZ |
| Manufacturer | MLKJHZ |
| Model Number | EL-2 |
| Product Dimensions | 2"D x 2"W x 2"H |
| Output Voltage | 3.7 Volts |
| Input Voltage | 5 Volts (DC) |
| Battery Charge Time | 2 Hours |
| Compatible Devices | 1.2V NIMH Batteries, 3.7V Rechargeable Batteries |
| Connector Type Used on Cable | USB-C |
| Number of Ports | 2 |
| Item Dimensions D x W x H | 2"D x 2"W x 2"H |
| Warranty Description | 3 month |
| Charging Time | 2 Hours |
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