4.2V 2A 18650 Lithium Battery Charger 1S 18650 battery Portable Wall Charger DC 5.5 * 2.1 MM
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Specifications
- Brand Name
- YYHQQBAD
- Quick charge
- Yes
- Data Transmission
- Other
- High-concerned chemical
- None
- Intelligent Charge
- Yes
- Output Power
- ≤37.5
- Origin
- Mainland China
- Display screen
- No
- Voltage range
- Low voltage non-USB (below 75V DC, below 50V AC)
- Power Source
- DC
- Type
- Electric
- Certification
- CE
- Use
- Lithium battery charger
- Model Number
- 4.2V 2A
- Package
- Yes
- Choice
- yes
- semi_Choice
- yes
Product Description
4.2V 2A 1S 18650 Lithium Battery Charger Portable Wall Charger DC 5.5 * 2.1MM
(With a precise constant current charging characteristics, charging the results are satisfactory, the battery will not overcharge)
INPUT SPEC:AC100-240V 50/60HZ 0.8A
Charging voltage:DC4.2V
Charging current:2A
Charging mode:CC-CV
Charge indicator:Charging the red light is full of green light
Charger port:DC5.5*2.1/DC55*2.5
Product size:76*43*30MM
Security protection: OVP/OCP/ Overload protection/ Short-circuit protection
Scope of application：Lithium batteries (lithium-ion batteries, lithium polymer batteries) the nominal voltage of the battery pack is 7.2-8.4V capacity range 1100~5500mAh As18650,18490,14650,14500,14430 and other battery packs
note：Our products have INPUT SPEC: US Plug / EU Plug, Please select the desired plug. If there are other specifications, please leave a message to us.
Protective function:
1. Input over-current protection
When the input current is within 0.1S greater than 1A, the charger will cut off the fuse, overcurrent protection will start off mains The impact of the charger to avoid internal circuit abnormalities caused fires and other cited risk.
2. The output current protection
Li-ion battery charger for charging current is limited to a range of battery safely withstand. When the lithium battery is fully vented, filled Appliance Repair will automatically enter the state, as policyholders battery, increasing battery life.
3. Short-circuit protection When the charger improper use, resulting in positive and negative output is connected to the charger output current is 200mA or less will be small enough to protect the charge Electrical short-circuit the positive and negative output will not be damaged.
Pros & Cons
Pros
- Intelligent constant current charging prevents overcharging and protects 18650 battery life
- Wide input voltage range (100-240V) works globally for international travelers
- CE certified for safe reliable performance
- Compact portable wall charger design is easy to store and carry
Cons
- Only compatible with 1S 18650 lithium batteries, not other battery types or sizes
- No display screen to show charging status or battery level
- Limited output power of ≤37.5W, leading to slower charging than higher-wattage chargers
- No included charging cables or alternative adapters for other setups
Common Questions
What are the input and output specifications of this battery charger?
Input is AC100-240V 50/60HZ 0.8A, output is DC4.2V 2A for 1S 18650 lithium batteries.
What sizes or battery types is this charger compatible with?
It is designed exclusively for 1S 18650 lithium batteries.
What safety certifications does this charger have, and is it intelligent?
It holds CE certification, and features intelligent charge technology to prevent overcharging.
What is the primary usage of this charger?
It is designed specifically for charging 18650 lithium batteries with precise constant current charging.
What connector and package does this charger include, and what are its shipping details?
It includes a DC 5.5*2.1MM connector, comes with the charger unit, and is manufactured in Mainland China with standard shipping originating from this region.
Product information last updated on December 8, 2025