Description

RELIANCE INR21700-RS50 5000mAh-70A

The Reliance RS50 21700 5000mAh 70A is a next-gen high-drain cell designed for serious power. With an impressive 70A continuous discharge rating (with 80°C cutoff), robust thermal stability, and strong cycle retention, this cell is ideal for DRONES/e-bikes, scooters, power tools, high-output battery builds, and more.

This cell is a tabless design and outperforms most top-tier cells like JP40, Molicel P50B, and Molicel P45B—while delivering performance very similar to the EVE 50PL. It handles aggressive loads with less voltage sag, lower resistance, and excellent thermal stability under stress.

This product is a final production cell and is CE and CCC certified. These are not pre-production or prototype cells. According to independent testing performed by PAJDA, this cell is currently the tabless lithium-ion cell with the longest lifespan tested, demonstrating exceptional cycle durability and stability under high-load conditions.

SPECIFICATIONS:

• Model: NR21700-RS50
• Size: 21700
• Nominal capacity: 5000mAh(Min. 4950mAh)
• Max Voltage: 4.2V
• Min Discharge Voltage: 2.5V
• Max Continous Discharge: 70A(With 80°C cut-off)
• Standard Charge Current: 2.5A
• Max Charge Current: 15A
• Chemistry: INR(NCA/NMC)
• Positive Terminal: Flat Top
• Protected: No
• Rechargeable: Yes
• Approx Weight: 67g
• Dimensions: 21.35mm × 70.30mm (Max)
• Datasheet: Datasheet

⚠️ Safety Warning for Lithium-Ion Battery Usage

Customers should have a clear understanding of lithium-ion battery handling and safety before making a purchase. Lithium-ion batteries are highly sensitive and may pose fire, burn, or explosion risks if improperly handled. Always charge batteries on fire-resistant surfaces, and never leave them charging unattended.

By purchasing, you assume full responsibility for any injury, damage, or loss arising from the incorrect use or handling of lithium-ion batteries or chargers. Compatibility with specific devices is not guaranteed. Only charge using a smart charger designed specifically for this battery type, and do not mix old or used batteries with new ones.

Important Usage Guidelines:

• Not for Use in E-Cigarettes or Similar Devices
• Must Be Used in a Protected Pack
• Spot Weld Only – Do Not Solder Directly
• Store in Fireproof Container
• Inspect Before Use
• Follow Manufacturer Specs Strictly

PACKAGE CONTENTS: 

• 1 * RELIANCE INR21700-RS50 5000mAh-70A