21700 Batteries
Rechargeable cylindrical 21700 batteries – advanced lithium-ion cells measuring 21mm by 70mm. XTAR’s 21700 batteries are engineered for high-demand applications, offering exceptional power for devices like LED flashlights and rescue tools. As a trusted 21700 battery supplier, we provide bulk 21700 batteries with flexible MOQ, reliable delivery, and competitive pricing.
XTAR 3.6V 21700 5500mAh USB-C Lithium battery
High-capacity 21700 rechargeable battery with 5500mAh capacity, up to 15A discharge, and convenient USB-C direct chargin
XTAR 3.6V 21700 5000mAh Raw Lithium battery cell
A balanced power battery with 5000mAh capacity. Combines 15A long-term discharge with 70A peak power, achieving over 500
XTAR 3.6V 21700HP 5000mAh Raw Lithium battery cell
High-performance 21700 Li-ion battery. 5000mAh capacity, 35A continuous & 90A pulse discharge, 500+ cycles. Durable powe
XTAR 3.6V 21700 5000mAh USB-C Lithium battery
USB-C Direct Charging We put the intelligence of a charger directly into the battery. ✅Supports 5V 1.2A fast charging.
XTAR 3.6V 21700HP 5000mAh 25A Lithium battery
25A high drain protected 21700 battery with 5000mAh high capacity.
XTAR 3.6V 21700 6000mAh Lithium battery
Max Power! Model 21700 Nominal Capacity 6000mAh Nominal Voltage 3.6V Max Continuous Discharge Current 10A Protected Yes
XTAR 3.6V 21700 4900mAh Lithium battery
21700 4900mAh rechargeable Li-ion battery, designed for flashlights.
XTAR INR 21700-50E 5000mAh Lithium battery
21700 5000mAh rechargeable Li-ion battery, designed for flashlights.
XTAR 21700 Battery Technical Specs
Model |
Capacity |
Nominal Voltage |
Discharge Current |
Cycle Life |
Protection Circuit |
Positive Terminal |
Dimension (mm) |
Certification |
|
|---|---|---|---|---|---|---|---|---|---|
|
21700 5000mAh Raw |
5000mAh |
3.6V |
15A |
500+ |
Unprotected |
Flat Top |
21.45±0.2 x 70.65±0.3 |
MSDS |
|
|
21700HP 5000mAh Raw |
5000mAh |
3.6V |
35A |
500+ |
Unprotected |
Flat Top |
21.45 x 70.65 |
MSDS |
|
|
21700 5000mAh USB-C |
5000mAh |
3.6V |
10A |
800+ |
Protected |
Flat Top |
21.5±0.3 x 75.5±0.5 |
MSDS |
|
|
21700HP 5000mAh |
5000mAh |
3.6V |
25A |
500+ |
Protected |
Button Top |
21.5±0.3 x 74.8±0.5 |
MSDS |
|
|
21700 6000mAh |
6000mAh |
3.6V |
10A |
600+ |
Protected |
Button Top |
21.8±0.3 x 74.8±0.5 |
MSDS |
|
|
INR 21700-50E 5000mAh |
5000mAh |
3.6V |
10A |
500+ |
Protected |
Button Top |
21.5±0.3×74.5±0.5 |
MSDS |
|
|
21700 4900mAh |
4900mAh |
3.6V |
10A |
500+ |
Protected |
Button Top |
21.4±0.3×74.8±0.5 |
MSDS |
Why Source XTAR 21700 Batteries?
Real Capacity
- Rated based on actual operating conditions, not laboratory ideals
- 6000mAh maximum in product line
Protection Without Power Compromise
- Proprietary protection circuit board design
- 25A max discharge with safety protection intact
Batch Consistency
- Cell screening and grading process
- High/low temperature validation
- For business customers requiring quality stability
Applications
- Tactical / outdoor flashlights
- Portable professional lighting
- Professional industrial devices
- Consumer electronics power solutions
Bulk Orders & Custom Services
We offer the options to design battery wraps in different color and style, custom your company logo and package. Contact our sales team for bulk pricing, lead times, and detailed technical datasheets.
View our multi-slot industrial chargers for bulk 21700 charging. Most of them are available with longer protected 21700 batteries.
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