EVE 21700 40P 3.6V 4000mAh Cylindrical Battery Cell
EVE 21700 40P Ternary Lithium-Ion cylindrical cell with 4000mAh capacity, 3.6V nominal voltage and dimensions of Ø21.15 × 70.15 mm. Compare cell size, weight and discharge current for your battery pack design.
12.5C
Max discharge
Product overview
EVE Ternary Lithium-Ion Cell
Cell dimensions
Ø21.15 × 70.15 mm
- Brand
- EVE
- Nominal voltage
- 3.6 V
- Nominal capacity
- 4000 mAh / 4 Ah
- Calculated energy (listed voltage × capacity)
- 14.4 Wh (0.0144 kWh)
- Weight
- 70 g
- Cell type
- Cylindrical
Delivery Time
30–60 Days
Warranty & Support
30 days free return
Specifications
- Brand
- EVE
- Model
- 21700/40P
- Dimensions
- Ø21.15 ± 0.10 × 70.15 ± 0.15 mm (diameter × height)
- Nominal voltage
- 3.6 V
- Nominal capacity
- 4000 mAh / 4 Ah
- Calculated energy (listed voltage × capacity)
- 14.4 Wh (0.0144 kWh)
- Chemistry
- Ternary Lithium-Ion
- Weight
- 70 g
- Discharge C-rate
- 12.5C
- Maximum discharge current
- 50 A
- Maximum charge current
- 6 A
- Operating voltage range
- 2.5–4.2 V
- Cycle life
- 300 cycles at 25°C
- Energy density
- 205 Wh/kg
- Standard charge
- 2 A CC/CV to 4.20 ± 0.05 V; termination 100 mA
- Fast charge
- 6 A CC/CV to 4.20 ± 0.05 V; termination 100 mA
- Standard discharge
- 0.8 A to 2.50 V
- AC resistance
- ≤12 mΩ
Applications
Listed application examples: Vacuum cleaners, Electric drills, Lawn mowers, Power tools, Garden tools. Selection depends on pack voltage, current, thermal design and available space.
Brand
EVE Energy
Established in 2001, EVE Energy Co., Ltd. (hereinafter referred to as EVE) was first listed on SZSE ChiNext in 2009. After 23 years of rapid development, EVE is now a global lithium battery company which possesses core technologies and solutions for consumer batteries, power batteries and energy storage batteries. (Stock code: 300014)
Visit EVE official websiteFAQs
Is this a cell or a complete battery pack?
This product is a single 3.6 V 4000 mAh / 4 Ah cylindrical cell. A complete battery pack requires a suitable cell configuration, BMS, enclosure and connections.
What are the nominal voltage and capacity?
The listed nominal voltage is 3.6 V and the capacity is 4000 mAh / 4 Ah. Nominal voltage is not the full-charge or discharge cut-off voltage.
What are the cell dimensions?
The listed dimensions are Ø21.15 × 70.15 mm. Confirm dimensional tolerances and allow space for terminals, connections and pack components.
What does the 12.5C discharge rating mean?
The maximum discharge current listed in the supplied inventory is 50 A. Dividing this current by the nominal capacity in Ah gives approximately 12.5C. This calculation does not establish a continuous or pulse test condition. Confirm the current limits and test conditions for your pack design; this is not a charging-rate specification.
Can I use this cell in a power-tool or cleaning-equipment battery pack?
Share your system voltage, continuous and peak current, available space and pack requirements so the configuration can be assessed. Matching voltage or physical size alone does not confirm compatibility.
What are the delivery time and return terms?
Delivery Time: 30–60 Days. Warranty & Support: 30 days free return. Confirm delivery arrangements and the return process when requesting a quote.
How can I get a price?
Use Get Price or WhatsApp and provide your required quantity and delivery country.
Related Products
Get Price
Describe your requirements in the message.