ShenZhen XTAR Electronics Co., Ltd
                                                                                                           
Verified Supplier
Years
Since
Menu

5000mAh USB C Batteries 3.6V 21700 Rechargeable Li Ion Battery

Price Negotiable
Price: $4.9/pcs
MOQ: 500
Delivery Time: 15-35 Days
Brand: XTAR
Product Description
Flashlight Batteries 5000mAh High Capacity 3.6V 21700 Lithium Ion Rechargeable Battery with USB C Fast Charging Technology
Product Overview

3.6V 21700 5000mAh USB-C 10A Type C Charging Cylindrical Tracking Camera Flashlight Lithium Ion Batteries

Key Features
  • High Capacity Battery: 5000mAh provides long-lasting power for various devices
  • USB-C Charging: Quick and convenient charging via modern USB-C port
  • Type C Compatibility: Supports fast charging across multiple devices
  • Lithium-Ion Battery: Ensures safety and reliability for extended use
  • Trackable Flashlight: Ideal for outdoor activities and emergency situations

The standard size fits various flashlights and lighting devices. Featuring USB-C for quick charging and built-in explosion-proof protection, it combines safety and practicality. With its large capacity and standard size, it meets the needs of tactical and outdoor users with high performance requirements.

Technical Specifications
Model 21700 USB-C Li-ion Battery
Capacity 5000mAh
Voltage 3.6V
Max Continuous Discharge Current 10A
Standard Charging Voltage 4.2±0.03V
Standard Charging Current 2500mA
Operating Temperature -20°C to 60°C
Storage Temperature -20°C to 50°C (Best at 25±5°C)
Cycle Life 800+
Protected Yes
Positive Terminal Button Top
Dimensions Φ21.5±0.3 x H75.5±0.5 mm
Net Weight 73g
Applications

Ideal for EDC/tactical/diving flashlights, bike lights, outdoor weather station, and other 21700-powered gear.

XTAR 21700 Lithium Ion Battery Applications
About XTAR

Established in 2006, XTAR is a leading provider of high-quality lithium-ion batteries, smart chargers, and LED flashlights. Based in Shenzhen, we integrate R&D, production, and sales to deliver innovative power solutions. With over 20 years of expertise, XTAR is your trusted partner for reliable energy products, offering customized solutions for OEM and wholesale clients.

Company Timeline
2005: At XTAR, we fully understand the importance of batteries to a device's performance. We selected superior batteries and LEDs to produce the PK keychain flashlight, which is brighter and has a longer runtime than any other model on the market.
2006: With product and user safety in mind, we developed the industry's first 16340 and 18650 lithium-ion batteries equipped with protection circuits, ushering in a new era of lithium-ion battery safety.
2009: Pioneered three-stage charging technology for lithium batteries (Patent No.: 201720828840.6), solving overheating and incomplete charging issues.
2011: Launched WP2II charger with 0V activation & USB output, reviving over-discharged lithium batteries and improving utilization.
2013: Released PANZER XP4, the first charger intelligently adapting to lithium-ion and nickel-metal hydride batteries.
2017: Launched Over 4 Slim, the market's first 4.1A*2 fast charger with internal resistance/temperature detection and overheat protection.
2020: Launched next-gen 1.5V rechargeable AA lithium batteries, outperforming traditional NiMH batteries and rewriting AA battery history.
2024: Expanded 1.5V AA/AAA lithium battery line with Constant Voltage + Linear series, leading the mainstream of reliable power.
2025: We joined U.S. ATA & SHOT Show, entering outdoor, optical, night vision & thermal imaging sectors, delivering safe, reliable power solutions to users; launched world-first touch battery power check technology.
Manufacturing Capabilities

We operate our own factory with efficient production processes ensuring precise production cycles. Manufacturing under our original brand guarantees product consistency and provides convenient maintenance and after-sales service. XTAR integrates the brand values of safety, reliability, and innovation into every product.

XTAR Manufacturing Facility
Partners
XTAR Global Partners
Global Certifications
ISO-9001 Certification
MSDS Certification
UN38.3 Certification
CE Certification
XTAR Global Certifications
Frequently Asked Questions
Can I have a sample order for Battery/Charger?
Yes, we welcome sample orders to test and check quality. Mixed samples are acceptable.
What about the lead time?
Sample needs 1-2 days, mass production time needs 3-7 working days.
How do you ship the goods and how long does it take to arrive?
DHL, UPS, FedEx or TNT and other shipping methods are available. Arrival time depends on the method you choose. Airline and sea shipping also optional. Warehouse in Texas, shipment is free in US.
Is it OK to print my logo on the product?
Yes. We have our own R&D Department and Factory. Both OEM and ODM are acceptable.
What industries do you provide supporting equipment for?
We can provide professional supporting services for many industries, such as electric toothbrushes, thermal imagers, infrared devices, thermal imaging scope, flashlights, toy cars, smart locks, and more.

Get in Touch

Have questions about our products or want to discuss a custom order? Our team is ready to help you.

Company ShenZhen XTAR Electronics Co., Ltd
Location 5th Floor, No.77 Xinhe Rd, Shangmugu, Pinghu Area, Longgang District, Shenzhen, Guangdong, China
Contact Person Dylan

Request A Quote

Please check your email address.
Your message must be at least 20 characters.