EVE 40PL 21700 4000mAh 70A Battery
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The EVE INR21700/40PL is a high-discharge 21700 lithium-ion rechargeable cell designed for applications that require high current output and reliable power delivery.
With a minimum rated capacity of 4000mAh, a nominal voltage of 3.6V, and a specified maximum discharge current of 70A under temperature cut-off conditions, the EVE 40PL is designed for demanding high-power applications, including compatible high-performance flashlights and other power equipment.
Its low initial internal impedance of 5mΩ or less supports high-current performance, while its compact 21700 cylindrical format makes it suitable for compatible battery compartments and battery pack designs.
Key Features
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Model: EVE INR21700/40PL
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Battery Size: 21700
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Minimum Capacity: 4000mAh
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Nominal Voltage: 3.6V
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Maximum Discharge Current: 70A with temperature cut-off
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Maximum Charging Current: 8A
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Low Internal Impedance: ≤5mΩ
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Rechargeable Lithium-ion Cell
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High-Current Discharge Performance
Technical Specifications
| Specification | Details |
|---|---|
| Manufacturer | EVE Energy |
| Model | INR21700/40PL |
| Cell Type | Lithium-ion rechargeable |
| Battery Format | 21700 |
| Minimum Rated Capacity | 4000mAh |
| Nominal Voltage | 3.6V |
| Standard Charging Current | 2A |
| Maximum Charging Current | 8A |
| Standard Charging Voltage | 4.20V ± 0.05V |
| Charging Termination Current | 0.1A |
| Maximum Discharge Current | 70A with temperature cut-off |
| Initial Internal Impedance | ≤5mΩ |
| Discharge Cut-off Voltage | 2.50V |
| Maximum Cell Weight | 67g |
| Dimensions | 70.15 ± 0.15mm × 21.15 ± 0.10mm |
| Charging Temperature | 0°C to 45°C ambient |
| Discharging Temperature | -20°C to 60°C ambient |
Discharge Performance
According to EVE's specification, the cell's discharge capacity is tested at different current levels at 25°C, following standard charging.
| Discharge Current | Relative Capacity |
|---|---|
| 0.8A | ≥100% |
| 10A | 100% (reference) |
| 30A | ≥95% |
| 40A | ≥95% |
The manufacturer's specification also lists a maximum discharge current of 70A with temperature cut-off, with a recommended cell temperature limit of 75°C and a maximum limit of 80°C.
Important: The 70A figure is a specified maximum discharge condition with temperature cut-off. It should not be interpreted as a guaranteed continuous discharge rating under all operating conditions. The specification does not explicitly identify 70A as a continuous discharge rating.
Charging Information
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Standard charging current: 2A
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Maximum specified charging current: 8A
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Charging voltage: 4.20V ± 0.05V
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Charging method: Constant-current/constant-voltage (CCCV)
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Charge termination current: 0.1A
Use a compatible charger and observe the specified charging voltage, current, and temperature limits.
Important Safety Information
This is a high-discharge lithium-ion cell intended for users familiar with lithium-ion battery safety.
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Verify that your device supports the 21700 battery format and the cell's dimensions.
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Confirm that your device's electrical requirements are compatible with this cell.
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Do not exceed the specified charging voltage or maximum charging current.
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Prevent short circuits and reverse polarity.
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Do not use cells with damaged insulation, deformation, leakage, or other visible damage.
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Do not expose the cell to fire, excessive heat, water, or mechanical damage.
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Do not over-discharge the cell below the specified cut-off voltage.
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Use appropriate electrical and temperature protection in the device or battery system.
The cell must be used within the manufacturer's specified operating conditions. Actual performance depends on the device, current draw, temperature, and thermal management.
Package Contents
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1 × EVE INR21700/40PL 21700 Lithium-ion Rechargeable Cell
Please verify the actual quantity and packaging before publishing.
Note: This is a bare lithium-ion cell, not a complete battery pack. Do not assume it includes a protection circuit; verify the supplied cell construction before use.
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.
Learn more,Please click on Here.
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.
Learn more,Please click here.