4.0 Ah at 40 A continuous. Rated 600 cycles to 50% energy.
A high-drain 21700 for Indian pack assemblers, stocked in India, with grading data for every cell. Six short steps: configure your pack, check the test data, see the cost, then ask for samples.
- Capacity
- 4.0 Ah
- Nominal
- 3.6 V
- Max continuous
- 40 A
- Pilot price
- ₹290 / cell
What do you build?
Pick your line of work. The pack builder, examples and cost maths below adjust to it.
Configure your tool packs
Set the platform and load. Readouts update live against the cell's 40 A continuous rating.
Headroom 10.0 A against 40 A continuous.
Cycle life at 40 A, end points shown
Each line ends at its warranty point. 21700 rated 600 cycles at 40 A to 50% energy (supplier-stated).
- ● Tafel 21700 · 600 cycles @ 40 A → 50% energy
- ○ Ampace JP40 · 400 cycles @ 40 A → 60% capacity
- ○ EVE 40PL · 400 cycles @ 40 A → ~60% capacity
- ○ Samsung 40T · 250 cycles @ 35 A → 60% capacity
- ○ Lishen LR2170LA · 300 cycles @ 35 A → 60% capacity
End points differ, so these are not a direct ratio. Lines are stylised between start and warranty point.
Chart summary: The Tafel 21700 is rated 600 cycles at 40 A to 50% energy. Ampace JP40: 400 cycles at 40 A to 60% capacity. EVE 40PL: 400 cycles at 40 A to ~60% capacity. Samsung 40T: 250 cycles at 35 A to 60% capacity. Lishen LR2170LA: 300 cycles at 35 A to 60% capacity. End points differ, so these are not a direct ratio.
- Cycle
- 8 A charge · 10 min rest · 40 A discharge to 2.5 V or 75°C · 30 min rest · 25 ±3°C
- Charge
- 8 A CC to 4.2 V, CV to 100 mA
- Cut-off
- 2.5 V or 75°C surface
- End point
- 600 cycles → 50% energy
- Also tested
- 40 A discharge at −20°C (1.0 V cut-off)
- 0°C cycling at 6 A charge / 10 A discharge
- Overcharge test 4.5 A to 6 V
What you'd spend on cells
Using your 20,000 cells/month from Step 02.
Using midpoint ₹475 of ₹400–₹550.
Public asking prices in India, ex-GST, Sep 2026.
Indicative pilot pricing, ex-GST. Final quote depends on volume and terms. Competitor figures: Public asking prices in India, ex-GST, Sep 2026; asking prices, not transaction prices.
Path to approved vendor
Four stations. You decide whether to move to the next one.
We send matched sample cells for your engineers.
20–50 cells with datasheet, cycle test reports and per-cell lot data (OCV, IR, capacity).
Ships in ~1 week
Request an evaluation kit
20–50 cells, datasheet, test reports and per-cell lot data. Your configuration is attached.