!NEW! Tenpower 50XG Tabless 21700 Battery Cells, Set of 6 with Holders

These are brand new, never cycled or welded Tenpower 50XG cells that have each been tested for self discharge and internal resistance to ensure they meet the requirements of large pack builds. Each order comes with a full test report of every cell with serial numbers. These cells use the latest cylindrical tabless/all-tab construction, alongside other innovations, for extremely high discharge rates without sacrificing energy density or capacity.

Specs:

• 40A continuous discharge rate
• 90A temperature limited discharge rate (75°C cut-off)
• 140A 3s pulse discharge rate
• 15A max charge rate
• 5000mAh typical, 4950mAh minimum
• 21700 cell form factor
• 4.20-2.50V charge-discharge voltage range
• NMC(A) lithium-ion cathode chemistry

Link to full Datasheet

Safety Guidelines & Warnings

(Courtesy of 18650batterystore)

⚠️ Important Safety Notice: Lithium-ion batteries require proper handling and safety knowledge. Misuse may result in fire, explosion, injury, or property damage.

General Safety Guidelines

• Only use if you fully understand lithium-ion safety.
• Charge on a fire-resistant surface and never leave unattended.
• Use a compatible charger designed for this battery type.
• Store in a protective case; never carry loose in pockets or bags.
• Keep away from metal objects to avoid short circuits.
• Use only within manufacturer specifications and/or protected battery packs.
• Resellers must provide these warnings to all customers.

Prohibited Uses

• Do not use in e-cigarettes, vaporizers, or similar devices.
• Do not mix old/new or used/unused cells.
• Do not short circuit, puncture, crush, incinerate, or modify the battery.
• Do not use if the wrapper is damaged.
• Do not overcharge or over-discharge.
• Do not expose to liquids, extreme heat, or sunlight.
• Do not solder directly—spot welding only.

User Responsibility

By purchasing and using this battery, you acknowledge full responsibility for proper handling, charging, and storage. Misuse can result in serious injury or damage. No compatibility guarantees are provided. Use at your own risk.