EU 18650 Li-ion Battery Charger 1 Cell – 4.2V

EU Universal 18650 Li-ion Battery Charger 1 Cell The EU Universal 18650 Li-ion Battery Charger 1 Cell provides a simple and convenient way to charge one rechargeable 18650 lithium-ion battery. It connects directly to a compatible AC wall outlet and does not require a separate adapter or USB charging cable. Its compact single-slot design makes it suitable for home use, electronics workshops, laboratories, and DIY projects. In addition, the spring-loaded battery holder keeps the cell securely positioned during charging. 4.2V Charging for One 18650 Cell A rechargeable 18650 lithium-ion cell normally has a nominal voltage of 3.6V or 3.7V. When fully charged, its voltage reaches approximately 4.2V. Therefore, this charger provides a suitable 4.2V charging output for one compatible Li-ion cell. The EU Universal 18650 Li-ion Battery Charger 1 Cell has an approximate charging current of 450mA, according to the listed product version. However, the exact output should always be confirmed from the specification printed on the supplied charger because electrical ratings can vary slightly between production batches. Charging time depends on the battery capacity, remaining charge, age, condition, and internal resistance. For example, a healthy 2000mAh cell may require approximately five to six hours to charge from a low level. Key Features • Designed for one rechargeable 18650 battery • Compatible with 3.6V and 3.7V Li-ion cells • 4.2V DC charging output • Approximate charging current of 450mA • Single spring-loaded battery slot • LED charging-status indicator • European two-pin wall plug • Direct connection to an AC outlet • Compact and lightweight construction • No external power adapter required • Suitable for charging spare and replacement cells • Ideal for home, workshop, and laboratory use Technical Specifications Specification: Value Product Type: Single-cell lithium-ion battery charger Number of Slots: 1 Cell Compatible Battery Size: 18650 Battery Chemistry: Lithium-ion Battery Nominal Voltage: 3.6V / 3.7V Charging Output Voltage: 4.2V DC Approximate Charging Current: 450mA Power Connection: Direct AC wall connection Plug Type: EU two-pin plug Status Display: LED indicator Battery Holder: Spring-loaded slot Battery Included: No Package Quantity: 1 Charger How to Use the 18650 Battery Charger 1 Cell First, inspect the battery and make sure that its insulating wrapper is not damaged. Do not charge a swollen, leaking, rusted, overheated, or physically damaged cell. Insert the 18650 battery into the slot while following the positive and negative polarity markings. The positive terminal normally points toward the charger’s marked positive contact. Never force the battery into the holder. After installing the cell correctly, connect the charger to a suitable wall outlet. The LED indicates the charging status according to the charger version. Once charging is complete, disconnect the charger from the outlet before removing the battery. Common Applications This single-cell charger can be used for rechargeable 18650 batteries installed in: • Rechargeable LED flashlights • Portable lighting equipment • Electronic testing devices • DIY battery-powered projects • Robotics projects • Educational electronics kits • Emergency lights • Portable speakers • Small electronic equipment • Spare-battery charging applications Battery Compatibility This charger is intended for one standard rechargeable 18650 Li-ion cell. Compatibility with extra-long protected 18650 batteries depends on the physical length of the charging slot. Therefore, do not force an oversized battery into the spring-loaded holder. The charger is not suitable for disposable batteries, AA or AAA Ni-MH batteries, 9V batteries, Li-Po pouch cells, lead-acid batteries, or multi-cell lithium battery packs. Safety Instructions Always verify the battery polarity before connecting the charger to AC power. Reversed installation can damage the charger or battery and may create a safety hazard. Place the charger on a dry, ventilated, and heat-resistant surface. Keep it away from water, direct sunlight, flammable materials, children, and excessive heat. Furthermore, do not cover the charger while it is operating. Do not leave lithium-ion batteries charging unattended or overnight. Disconnect the charger after use and store charged cells safely away from loose metal objects that could short-circuit their terminals.