For battery cells, review the product description for real-world current recommendations, testing notes, and application guidance. Manufacturer maximum ratings should be treated as limits, not the best target for long-term pack health.
Description
EVE 40PL 21700 Cell – 4000mAh – Tabless High-Power Lithium-Ion Battery - Check availability
Continuous discharge: 70A
The EVE 40PL 21700 4000mAh is a tabless high-power lithium-ion cell built for demanding applications that need strong current delivery, low impedance, and compact high-output performance.
With 4000mAh standard discharge capacity, 3.6V nominal voltage, and up to 70A continuous discharge with temperature cut-off, this cell is well suited for power tools, garden equipment, vacuum systems, electric two-wheelers, and custom high-drain battery assemblies.
EVE describes the 40PL as a tabless 21700 high-power cell designed to reduce impedance and increase power output. It is best used in properly engineered battery packs with temperature monitoring and appropriate BMS/PCB protection.
Specifications:
| Model | EVE INR21700/40PL |
| Size | 21700 |
| Nominal Capacity | 4000mAh |
| Minimum Capacity | 4000mAh (standard discharge capacity) |
| Nominal Voltage | 3.6V |
| Max Voltage | 4.2V |
| Min Discharge Voltage | 2.5V |
| Max Continuous Discharge | 70A (17.5C) with temperature cut-off; Trecommended: 75°C, Tmax: 80°C |
| Standard Charge Current | 2.0A (0.5C) |
| Max Charge Current | 8.0A (2.0C) |
| Standard Discharge | 0.8A (0.2C), 2.50V cut-off |
| Chemistry | NCM / Li-ion |
| Positive Terminal | Flat Top |
| Protected | No |
| Rechargeable | Yes |
| Initial Impedance | ≤5mΩ |
| Approx. Weight | 67.0g Max |
| Dimensions | 21.15±0.10mm diameter × 70.15±0.15mm height |
| Operating Temperature | Charge: 0°C to 60°C (recommended recharge release <45°C) / Discharge: -20°C to 80°C (recommended re-discharge release <60°C) |
| Storage Condition | -20°C to 60°C within 1 month; -20°C to 45°C within 3 months; -20°C to 25°C within 1 year (at shipping SOC) |
| Cycle Life | Capacity after 400 cycles: ≥60% of initial capacity (test condition: 6.0A charge / 40A discharge or 75°C cut-off) |
| Datasheet | Datasheet |
Applications:
- ✅ Racing E-Bikes
- ✅ Extreme-Load Battery Packs
- ✅ High-Output Power Tools
- ✅ Robotics and Mobility Systems
- ✅ Performance-Oriented Custom Builds
DIY500AMP.COM Design – Tabless High-Power, Pack-Ready Performance
⚠️ Safety Warning for Lithium-Ion Battery Usage
Customers should understand proper lithium-ion battery handling before use. These cells can present fire, burn, or explosion hazards if short-circuited, overcharged, physically damaged, overheated, punctured, or used outside manufacturer specifications. Always charge on a fire-resistant surface and never leave charging batteries unattended.
By purchasing or using this battery, the user assumes responsibility for correct handling, pack integration, charging, temperature management, and protection. This cell is best used in a properly designed battery pack with appropriate BMS/PCB protection. Only use chargers and charging methods designed for this battery type, and never mix old and new cells in the same pack.
Important Usage Guidelines:
- Not for Use in E-Cigarettes or Similar Devices
- Use in a Properly Protected Pack
- Spot Weld Only – Do Not Solder Directly
- Monitor Temperature Under High Load
- Inspect Wrap and Insulator Ring Before Use
- Follow Manufacturer Specs Strictly
Orders ship from Florida when inventory is available. Lithium-ion cells require proper handling, protected packs, correct chargers, and safe storage. Do not solder directly to battery terminals.
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Wow, these cells are great!
I purchased some of these tabless cells to try on my 1S 3" HD Toothpick drone build, and, albeit a bit heavy for 1S, it flies pretty well. Not a freestyle monster, but an endurance beast with decent send. These cells shrug off the demands of a BETAFPV Matrix HD AIO flight controller/12A ESC and some 1202.5 11000KV motors. I'm getting 15+ minutes of speedy flight time from a single cell trying not to go below 3.2V, and about 20+ minutes cruising. Love these cells and will definitely buy more when time comes, only from DIY500AMP, who are terrific!
VN in AZ
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