The USB 18650 Li-ion Battery Cell is a high-capacity rechargeable lithium-ion battery featuring a built-in Micro USB charging port for convenient direct charging. Designed for wireless microphones, bike lights, emergency lights, mini-fans, and other portable electronic devices, it can be charged from any standard 5V USB power source without needing a dedicated battery charger. With high energy density, long cycle life, and integrated protection circuit, this battery delivers reliable, stable power for professional and everyday applications.

• Built-in Micro USB charging port for direct USB charging
• Compatible with 5V USB wall chargers, laptops, power banks, and car chargers
• 500+ recharge cycles for long service life
• Integrated protection circuit against overcharge, over-discharge, over-current, and short circuit
• Low self-discharge for excellent storage performance
• LED charging indicator for charging status
• Environmentally friendly replacement for disposable batteries

• Direct USB charging without a separate charger
• Long-lasting 3500mAh capacity for extended runtime
• Reliable power output for microphones and audio devices
• Built-in safety protection for secure operation
• Rechargeable design reduces environmental impact
• Easy to carry and recharge while traveling or working outdoors

• Store the battery in a cool, dry, and well-ventilated location
• For long-term storage, maintain a charge level of 40%-60%
• Recharge the battery every 3-6 months during extended storage
• Keep batteries away from metal objects such as keys, coins, or tools to prevent accidental short circuits

• Do not dispose of the battery in household waste or fire
• Recycle the battery through an authorized lithium-ion battery recycling facility in accordance with local regulations