Product Description
This high-capacity 21700 lithium-ion rechargeable battery cell
delivers reliable 3.6V output with an impressive 5000mAh capacity,
ideal for high-drain applications. Featuring a built-in Type-C
charging port, it allows direct charging without the need for a
separate charger — making it more convenient and user-friendly.
Designed with premium safety features, this cell offers excellent
cycle life, energy density, and performance consistency.
Key Features
Model: 21700 lithium-ion battery cell
Recharge Interface: Integrated Type-C port
Charging Time: ~2–3 hours (fast charging supported)
Cycle Life: ≥1000 cycles
Discharge Rate: High-drain compatible
Protection Circuit: Built-in protection against overcharge,
over-discharge, overcurrent, and short circuit
Design: Cylindrical with durable metal casing
Applications
Flashlight,Headlamp,Bike light,Emergency
light,Mini-fan,Microphone,Instruments and apparatus
Product Parameters
| Commodity | TYPE-C 21700 Li-ion battery |
| Model | URA2142/URA2150 |
| Nominal Capacity | 4200mAh/15.1Wh; 5000mAh/18.0Wh |
| Nominal Voltage | 3.6V |
| Out Voltage | 3.6V/18.0A(Max);3.6V/10.0A(Max) |
| Certificate | CE/FCC/BSMI/BIS/CB/PSE/KC/UN38.3/MSDS(Option) |
Packing and Shipping
Packing Details
Standard Packing Configuration:
Each cell individually packed in anti-static bags or protective
sleeves
Multiple cells placed in inner boxes with foam or cardboard
separators
Outer cartons are strong, double-walled export-grade with
shock-absorbing filler
Cartons labeled with battery specifications, safety symbols, and
handling instructions
Bulk orders: securely stacked on wooden pallets with stretch film
for added stability
Optional Packaging Services:
OEM packaging with custom logo/label
Retail-ready blister or box packaging
Barcode, QR code, or serial number labeling for inventory tracking
Shipping Information:
Shipping Methods:
Express (DHL, FedEx, UPS) – for samples or urgent orders
Air freight – for medium-volume, time-sensitive shipments
Sea freight – cost-effective option for bulk quantities
Export Documents & Certifications:
UN38.3 (transport safety certification)
MSDS (Material Safety Data Sheet)
CE, RoHS (available upon request)
Dangerous Goods Declaration (for customs and carrier compliance)
Handling Notes:
Classified as Class 9 Dangerous Goods (UN3480 – Lithium-Ion
Batteries)
Compliant with IATA, IMDG, and relevant shipping regulations for
lithium batteries
FAQ
1. What devices can this battery be used in?
This 21700 battery is ideal for high-drain devices such as
flashlights, e-bikes, power tools, portable fans, and smart home
devices. Ensure the device supports 21700 size and 3.6V input.
2. How is this battery charged?
It features a built-in Type-C charging port. Simply connect a USB-C
cable to charge the battery directly—no external charger required.
3. How long does it take to fully charge?
Charging time is approximately 2 to 3 hours, depending on the
charging current (recommended 5V/2A).
4. Is the battery protected?
Yes. The battery has a built-in protection circuit (PCB) for
overcharge, over-discharge, overcurrent, and short-circuit
protection.
5. Can I use this battery in series or parallel configurations?
For multiple-cell configurations, please consult with us to ensure
electrical safety and compatibility. The built-in charging circuit
may not be suitable for battery packs without adjustment.
6. What’s the difference between this and a standard 21700 cell?
Unlike standard cells, this battery features a Type-C charging
port, so it doesn’t require an external charger. It is also
typically slightly longer to accommodate the charging circuitry.
7. Can I order this battery with custom labels or packaging?
Yes. OEM/ODM services are available, including custom branding,
capacity adjustment, and packaging design.
