High Capacity Meets High Discharge Performance

The LINKDATA INR21700S-65P is a high-performance rechargeable 21700 lithium-ion cell designed to deliver an impressive balance of 6500mAh capacity and high-current output.

With a typical capacity of 6500mAh (23.4Wh), this cell provides significantly more energy than conventional high-drain 21700 batteries while still supporting demanding high-power applications. Its nominal voltage is 3.6V, with a minimum rated capacity of 6370mAh.

This makes the INR21700S-65P particularly attractive for high-performance flashlights and other applications where both long runtime and strong current delivery matter.

Up to 65A Continuous Discharge

The INR21700S-65P supports a 52A maximum continuous discharge current without an 80°C cutoff, or up to 65A with an 80°C temperature cutoff. It is also rated for a maximum 165A pulse discharge for 10 seconds at 25±2°C.

Combined with an AC internal resistance of ≤4.5mΩ, the cell is designed to deliver high current efficiently for demanding loads.

6500mAh for Longer Runtime

High-discharge cells often require a compromise between power and capacity. The INR21700S-65P combines high-current capability with a substantial 6500mAh typical capacity, providing 23.4Wh of energy in a standard 21700-format cylindrical cell.

Under the manufacturer's specified discharge-rate testing, the cell retains approximately 97% relative capacity at 2C, 95% at 3C, 95% at 5C and 95% at 6C.

Designed for Demanding Applications

Its combination of high capacity, low resistance and high discharge capability makes the INR21700S-65P suitable for applications such as:

• High-performance flashlights
• High-power battery packs
• Portable power systems
• Power tools
• Energy storage systems
• Industrial equipment

Cycle Performance

LINKDATA specifies ≥80% capacity retention after 600 cycles under a 6.5A charge / 6.5A discharge test at 25±2°C.

Under the more demanding 8A charge / 20A discharge cycle test, the specification lists ≥60% capacity retention after 500 cycles.

Wide Temperature Performance

The cell is engineered for operation across a wide temperature range. Manufacturer specifications list charging operation down to -10°C and discharge testing extending to extremely low temperatures. At -40°C, its 1C discharge test retains approximately 70% of the reference capacity under the specified standard test conditions.

Specifications

SHIPPING
The final shipping cost and estimated delivery timeframe will be available to you during checkout. Currently, we offer 3 International shipping methods which are steady and easy to track. Priority worldwide shipping, Premium ( Partial countries) and a faster Express shipping. The estimated times stated below are not guaranteed. An international package could experience delays like postal strikes or severe weather or Cov-19 situation. All shipping ways, PO Box address is not acceptable.

For some flashlights, there's a pure battery inside（phone charging）,If We can not ship your packages via USPS or DHL,we'll ship your package in another way.

Note:
When you place an order for just the batteries, for easy shipping, faster and safe delivery, the batteries are placed in the flashlights.

If you don’t receive your order within the estimated time frame provided below and suspect that it might be lost in transit, please contact Flashlightgo Support ( support@flashlightgo.com ) and we can look into the order with the courier. Lost-in-transit requests must be submitted to Flashlightgo Support within 3 months of the date of shipping or before the courier archives the tracking information.

Option 1.
Express by DHL/UPS/Fedex/Aramax/SF etc ( there may be tax need to pay in this way),
The estimated time of delivery is usually 3-7 work days depending on the country. Includes detailed tracking and confirmation of delivery.

Option 2.
Premium ( 6-10days, All tax and Duty Paid),
All tax and duty are prepaid to carrier by Flashlightgo before shipping, so you dont need to pay any tax or duty when you get it.

Option 3.
Priority shipping(1-2 Weeks, average 10 days)
If we marked it is with all tax and duty paid, all tax and duty are prepaid to carrier by Flashlightgo before shipping, so you dont need to pay any tax or duty when you get it.

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To ensure that you get the desirable product, we allow a seven-day product return period. Any product return application outside this period will not be entertained.
All returned product must be unused and the original package should be kept.

Return：
We do not offer return for personal products like socks and hats or food, magazine and fragile or dangerous products The original receipt must be available for application of return.

Discount products：
No product return for discount products

Gifts products：
If the item is marked as a gift when purchased and shipped directly to you, it cannot be exchanged , refunded or warranty.

Exchange：
We only replace items if they are defective or damaged.
Exchange service are offered only to wrong deliveries or product damage not caused by client. If needed, please email to info@flashlightgo.com.

Warranty
How long is the warranty period?
Flashlightgo warrants to the original purchaser that the Product(s) shall be free of any defect in material or workmanship for a period of one year for labor and one year for parts from the date of the original order except the items listed below:
Chargers,Batteries and Other Accessories: 3 months warranty

Should the Product(s) supplied by Flashlightgo prove defective because of improper workmanship or material as reasonably determined by us, Flashlightgo agrees, at its option, to either repair or replace the Product free of charge, excluding any shipping or handling charges.

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