Applications
- E-bike and e-scooter packs
- Power tools and portable power
- Small solar storage and UPS packs
EVE · LiFePO4 Cell
EVE C40 3.2V 20Ah LiFePO4 Cylindrical Cell (40135)
The EVE C40 (IFR40135) is a 3.2V, 20Ah cylindrical LiFePO4 cell, 40 mm across and 135 mm tall. Its larger size gives more capacity per cell than the C33, which means fewer cells and welds in e-bike, e-scooter and small storage packs. MESOL supplies Grade A EVE C40 cells (model code on our list: C40KS-V2.2) direct from the manufacturer, QR-coded with a per-cell test report.
Grade A
Direct from manufacturer
QR + per-cell test report
Ready stock in Karachi
Capacity
≥ 20,000 mAh at 0.33C
Energy
64 Wh nominal
Cycle life
4,000 cycles at 25°C, 100% DoD, to ≥80%
Format
Cylindrical 40135
Specifications
EVE C40 20Ah technical specifications
Nominal voltage
3.2 V (C40-V2)[S6]
Capacity
≥ 20,000 mAh at 0.33C; ≥ 19,500 mAh at 1C (C40-V2)[S6]
Energy
64 Wh nominal[calc]
Chemistry
LiFePO4 (LFP)[S6]
Format
Cylindrical 40135[S6]
Dimensions
Ø40.5 ± 0.3 mm × 135.0 ± 0.5 mm (incl. pole) (C40-V2)[S6]
Weight
366 ± 6 g (C40-V2)[S6]
Internal resistance
AC-IR ≤ 1.9 mΩ; DC-IR ≤ 6 mΩ (C40-V2)[S6]
Max charge current / power
Standard 0.5C (10 A); fast charge 1C (20 A) up to 80% SOC (C40-V2)[S6]
Max discharge current / power
Standard 0.5C (10 A); max 3C (60 A) 30 s pulse (C40-V2). max continuous not stated on datasheet[S6]
Cycle life (test condition)
4,000 cycles at 25°C, 100% DoD, to ≥80%; 1,500 at 45°C to ≥70% (C40-V2)[S6]
Operating temp: charge
0 to 55°C (C40-V2)[S6]
Operating temp: discharge
-20 to 60°C (C40-V2)[S6]
Voltage window
2.5 to 3.65 V (C40-V2)[S6]
Model code
C40 (C40KS-V2.2 per MESOL price list)
Warranty
Manufacturer's standard warranty (EVE), passed through by MESOL
Supplied with
Grade A cells, QR code on every cell, per-cell test report
From the manufacturer's product specification (see sources below). The datasheet for your batch is available on request.
Pack-building examples
Nominal values (cells × 3.2V × capacity). Usable energy depends on your BMS and depth of discharge.
Swipe sideways to see all columns →
| Config | Cells | Voltage | Capacity | Energy | Typical use |
|---|---|---|---|---|---|
| 4S1P | 4 | 12.8 V | 20 Ah | 256 Wh | small 12V battery |
| 16S1P | 16 | 51.2 V | 20 Ah | 1.02 kWh | 48V e-bike |
| 16S2P | 32 | 51.2 V | 40 Ah | 2.05 kWh | 48V scooter / small ESS |
| 20S2P | 40 | 64 V | 40 Ah | 2.56 kWh | 60V e-scooter |
Design notes
- Specifications on this page are from EVE's C40-V2 product specification. The datasheet for the C40KS-V2.2 batch we supply is available on request.
- Some sellers list “60A continuous”. EVE's C40-V2 datasheet gives 60A only as a 30-second pulse.
Why MESOL
Why buy cells from MESOL
Grade A, direct from the manufacturer
We buy straight from EVE and Cornex, not from the grey market.
Fresh 2026 production
New cells only, never old, refurbished or recycled stock.
QR code + per-cell test report
Every cell is QR-coded and comes with its own test report. Ask for photos before you buy.
Ready stock in Karachi
No import wait and no LC on your side. Cells ship from Karachi.
Manufacturer's warranty
Manufacturer's standard warranty (EVE), passed through by MESOL unchanged.
Authorized EVE & Cornex distributor since 2017
2.3+ GW of solar equipment supplied in Pakistan. We never install, so we never compete with the assemblers and installers we supply.
FAQ
Frequently asked questions
What is the difference between the C33 and the C40?
The C40 is bigger (40 mm × 135 mm) and holds 20Ah against the C33's 15Ah, so a pack needs fewer cells.
Can the C40 deliver 60A continuously?
EVE's C40-V2 datasheet lists 60A (3C) as a 30-second pulse. Design for the standard 10A–20A range and add cells in parallel for higher loads.
What is the cycle life?
EVE's C40-V2 specification gives 4,000 cycles at 25°C and 100% depth of discharge, to 80% capacity.
What is the C40 price in Pakistan?
WhatsApp us the quantity for today's rate.
Ready to order?
Get today's rate for EVE C40 20Ah
Send the model, quantity and delivery city and we'll reply with today's rate and confirm availability. Prices move with the dollar and supply, so we quote the day's rate. Tell us your city and we'll confirm delivery options.
S-1, Estate Avenue, SITE Area, Karachi · Offices in Karachi and Lahore
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Specification sources
- [S6] EVE C40-V2
- [CALC] Calculated: nominal voltage x capacity (or cells x per-cell value)
Values are taken from the manufacturer's product specification. "Calculated" values are cells × 3.2V × capacity. Specifications may change between production batches; the datasheet for your batch is available on request.