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Rechargeable Lithium Battery 21700 Battery Lithium Ion Cell 4900mAh Protected

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Rechargeable Lithium Battery 21700 Battery Lithium Ion Cell 4900mAh Protected

Brand Name : XTAR

Model Number : 21700 4900mAh

Certification : CE/RoHS/UN38.3/MSDS

Place of Origin : China

MOQ : 500

Price : $3.5/pcs

Payment Terms : T/T

Supply Ability : 2000pcs/day

Delivery Time : 7-30 Days

Packaging Details : Color box+battery box

Battery Type : Lithium-ion (Flat-Top, Unprotected)

Operating Temperature(℃) : 0~45℃

Discharge Cut-off Voltage : 2.5V

Internal resistance : ≤45mΩ

Weight : 85g

Model : 3.6V 21700 5000mAh Raw

Rated Voltage : 3.6V

Nominal Capacity : 5000mAh

Max Pulse Discharge : 70A

Cycle Life : ≥500 Times

Product : 21700 Batteries

Type : 21700

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Rechargeable 21700 Batteries Lithium Ion Cells
Suitable for Electric Vehicles, Power Tools, and Home Energy Storage Systems
Product Overview
XTAR 21700 4900mAh Li-ion battery powers high-performance flashlights with 10A continuous discharge. Boasts 600+ recharge cycles, low self-discharge, and robust all-around protection (over-charge, over-discharge, short-circuit). Eco-friendly, impact-resistant, and RoHS/CE-certified. Withstands -20°C to 60°C, ideal for extreme environments. Cost-effective, long-lasting, and fast-charge compatible.
Key Features
  • 3.6V protected 21700 battery with button top
  • Constant discharging current: 10A
  • Cell: INR21700-50T
  • Low internal resistance, high energy efficiency
  • Over-charge, over-discharge, short circuit protection
  • Impact resistant and eco-friendly
Technical Specifications
Nominal Capacity 4900mAh
Nominal Voltage 3.6V
Standard Charging Voltage 4.2V
End-of-discharge Voltage 2.5V
Continuous Discharge Current 10A
Cell INR21700-50T
Size φ21.4±0.3mm × 74.8±0.5mm
Protected or Not Yes
Applications
Rechargeable Lithium Battery 21700 Battery Lithium Ion Cell 4900mAh Protected
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: Developed PK keychain flashlight with superior batteries and LEDs
2006: Introduced industry's first protected 16340 and 18650 lithium-ion batteries
2009: Pioneered three-stage charging technology for lithium batteries
2011: Launched WP2II charger with 0V activation & USB output
2013: Released PANZER XP4 intelligent charger
2017: Launched Over 4 Slim fast charger with advanced detection features
2020: Introduced next-gen 1.5V rechargeable AA lithium batteries
2024: Expanded 1.5V AA/AAA lithium battery line
2025: Joined U.S. ATA & SHOT Show and launched 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.
Rechargeable Lithium Battery 21700 Battery Lithium Ion Cell 4900mAh Protected
Partners
Rechargeable Lithium Battery 21700 Battery Lithium Ion Cell 4900mAh Protected
Global Certifications
ISO-9001 Certification, MSDS Certification, UN38.3 Certification, CE Certification, RoHS Certification
Rechargeable Lithium Battery 21700 Battery Lithium Ion Cell 4900mAh Protected
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 others shipping method is available. Arriving time depends on the way 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.
Where do you ship from?
We can ship from Shenzhen, China, and we also have overseas warehouses in the U.S., so we can also ship directly from the U.S.

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