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21700 Battery Wholesale RS50 4950mAh 3.6V 70A Continuous Discharge Battery Supplier China for E-bike

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21700 Battery Wholesale RS50 4950mAh 3.6V 70A Continuous Discharge Battery Supplier China for E-bike

Brand Name:	Reliance
Model Number:	RS50
MOQ:	130
Price:	$3.52
Packaging Details:	130pcs/Carton box
Payment Terms:	T/T

Detail Information

Product Description

Ratings & Reviews

Detail Information

Place of Origin:

China

Certification:

UN38.3/CE/UL/IEC62133/KC/BIS

Document:

Terminal Type:

Full Tab

Chemistry:

Lithium-ion

Key Feature:

Ultra-low Internal Resistance, High Rate Capability, Low Temperature Rise

Low Impedance:

Max 4MΩ

Applications:

Electric Tools, Gardening Tools, Cleaning Appliances, Drones

High Discharge Rate:

Max 70A

Low Temperature Performance:

Charge: -20～60℃ Discharge: -40～80℃

Supply Ability:

500K/Month

Product Description

21700 Battery Wholesale RS50 4950mAh 3.6V 70A Continuous Discharge Battery Supplier China for E-bike

The RS50 is a premium rechargeable lithium-ion cell engineered for long-lasting power and dependable performance. Boasting a 4950mAh capacity and a maximum continuous discharge current of 70A, it delivers stable power output and prolonged cycle life, making it ideal for high-load applications..

Cell Characteristics

Specification	Value
Capacity	Typical 4950mAh (17.82Wh) Minimum 4950mAh (17.82Wh)
Cell Voltage	Nominal 3.6V Charge 4.2V Discharge 2.5V
Continuous Charge Current	Standard 1A Maximum 15A
Continuous Discharge Current	Maximum 70A
Ambient Temperature	Charge -20～60℃ Discharge -40～80℃
Impedance	≤4mΩ
Weight	67g
Dimension	70.3mm(Max) * 21.35mm(Max)
Cycle life	500cycle(80%)

Key Features

Ultra-low Internal Resistance:Its full-tab design shortens the current collection path, cutting internal resistance substantially versus traditional cells
Superior Thermal Performance:Uniform current distribution delivers low, consistent heat generation
High Capacity: 4950mAh provides extended runtime before requiring recharge
High Discharge Rate: 70A continuous discharge, perfectly suited for high-power applications
Lithium-Ion Chemistry: Features outstanding stability, high efficiency and low internal impedance
Rechargeable & Long-Lasting: Withstands numerous charge-discharge cycles with little capacity decay
Stable Power Output: Maintains a flat voltage profile throughout discharge for consistent power supply

Applications

Aerospace: Provides lightweight, high-energy-density batteries for spacecraft, drones, UAV, and model aircraft
Robotics: Supplies continuous power for high-load robots
Lightweight Power Equipment: Assists with power for electric motorcycles, snowmobiles, electric bicycles, and other lightweight power tools
Power Tools: Delivers high burst power for drills, angle grinders, electric saws, blow dryers, and other high-current tools
Cleaning Appliances: Provides stable and lasting power for vacuum cleaners, mite removers, floor washers, steam mops, garden tools, and more, ensuring work efficiency and long battery life.
Medical Electronics: Provides highly reliable power for life monitors, portable medical devices, and more

Warning

Lithium-ion batteries require proper handling and knowledge to ensure safe operation
Failure to follow safety guidelines may result in fire, explosion, serious injury, or property damage
Only purchase and use if you fully understand lithium-ion battery safety
Never leave a battery unattended while charging
Keep away from animals and children
Prevent contact with metal objects to avoid short circuits
Inspect wraps and insulators regularly for damage - repair or dispose of damaged batteries immediately
Resellers must pass these warnings to customers
Typical cycle life of 500 cycles before noticeable capacity reduction - recycle at end of life
Do not crush, incinerate, or modify batteries
Only use within manufacturer specifications

Ratings & Review

Overall Rating

5.0

Based on 50 reviews for this supplier

Rating Snapshot

The following is the distribution of all ratings

5 stars

100%

4 stars

3 stars

2 stars

1 stars

All Reviews

win

Hungary Aug 28.2026

trustpilot.com

Helpful (895)

Excellent cylindrical lithium-ion cells for the price.

J*e

Switzerland Jul 24.2026

trustpilot.com

Helpful (3455)

Great quality A cells. Voltage balanced, no duds.

Alien

Denmark Jul 23.2026

trustpilot.com

Helpful (789)

The overall purchasing experience was excellent, and the product quality exceeded my expectations.

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21700 Battery Wholesale RS50 4950mAh 3.6V 70A Continuous Discharge Battery Supplier China for E-bike

Overall Rating

Rating Snapshot

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