32140 LiFePO4 Battery 3.2V 15Ah | Lithium Werks / CBAK Grade-A Cell

32140 LiFePO4 Battery — 15Ah 3.2V Cylindrical LFP Cell (Lithium Werks / CBAK)

The 32140 LiFePO4 battery is the 15Ah class of the cylindrical LFP ladder: Ø33 × 140 mm, 15 Ah at 3.2 V nominal — 48 Wh per cell at above 172 Wh/kg on the Lithium Werks line. The “32140” designation covers the CBAK and Lithium Werks side of a dual naming standard whose other side sells as 33140 (Gotion IFR32135 / EVE C33). CMX Battery supplies both lines as Grade-A cells with per-lot capacity, IR and OCV test data, UN 38.3 / IEC 62619 / CE / MSDS documentation, MOQ 100 pcs and 15-day lead time — with specification review to match the right line to your program.

Table of contents: Specifications · Brand Options · What Is a 32140 LiFePO4 Battery? · 32140 vs 33140 · Pack Economics · Charge & Discharge · Cycle Life & Safety · Applications · Certifications · OEM/ODM & Ordering · FAQ

32140 LiFePO4 Battery Specifications

Typical values below reflect published manufacturer specifications for the two supply lines; final parameters ship against the CMX controlled product specification.

Brand Options: Lithium Werks AER32140m2A1 vs CBAK 32140

Both lines are the same envelope and electrically interchangeable in most designs; the choice is certification path versus pulse-duty profile.

What Is a 32140 LiFePO4 Battery?

A 32140 LiFePO4 battery is a rechargeable cylindrical cell — 32 mm nominal diameter, 140 mm length, 15 Ah at 3.2 V — in the naming convention where CBAK and Lithium Werks publish the format. Its sibling designation, 33140, covers the same envelope under Gotion and EVE; the split follows the manufacturer, not a physical incompatibility. The full dual-standard analysis is in our 32140 vs 33140 comparison.

The format’s engineering case is cell count: a 51.2 V / 15 Ah pack is 16 cells (16S1P) in the 15Ah class versus 48 cells (16S3P) in the 6Ah class — with proportional reductions in welds, busbars, BMS sampling points and assembly labor.

32140 vs 33140: Same Envelope, Different Brands

In most ESS and telecom designs either side works; specify by manufacturer model code (AER32140m2A1, C33, IFR32135-15Ah) rather than the size name. See the 33140 product page for the EVE / Gotion side.

Pack Economics: Why the 15Ah Format Cuts Cell Count by Two-Thirds

For a pack builder running volume, that difference lands directly in cost of goods: fewer welds, fewer busbars, fewer BMS channels, less assembly labor. The trade-off is flexibility — a 16S3P 6Ah design can be re-configured by changing parallel count, while a 16S1P 15Ah design is locked to its capacity step. Step-by-step configuration math is in our pack configuration guide.

IFR32140 Charge and Discharge Profile

Charging follows CC-CV on the LFP profile to a 3.65 V ceiling — never 4.2 V. The Lithium Werks line accepts ≤C/2 (7.5 A) standard with 1C (15 A) fast charge across 20–80% SOC; the CBAK line specifies 0.2C standard. Both cells charge within 0–45 °C on the CBAK side and 0–60 °C on the Lithium Werks side.

Discharging splits by line: Lithium Werks recommends ≤1C (15 A) continuous with a 3C (45 A) maximum and 5C (75 A, 30 s) pulses; CBAK publishes 1C continuous with a 10C (60 s) pulse profile aimed at power tools and starter duty. None of the 15Ah cells is a sustained high-rate power cell in the sense of the 3C-class 6Ah formats — if your pack needs sustained 2C output, verify the rate table on the specific line’s datasheet.

IFR32140 Cycle Life and Safety Performance

Cycle life on the Lithium Werks AER32140m2A1 is published above 3,500 cycles at 80% DOD at room temperature and above 2,000 cycles at 45 °C — the strongest documented rating in the format. The CBAK line carries long-life claims in the distribution channel (up to 6000 cycles advertised); anchor procurement to the manufacturer datasheet and its test conditions.

Safety testing covers over-discharge, overcharge, external short circuit, thermal abuse, drop, vibration and temperature shock — all with no fire, no explosion, no leakage. The LFP chemistry’s higher thermal runaway onset temperature removes the propagation concern in multi-cell series configurations.

32140 LiFePO4 Battery Applications

Stationary ESS (C&I and residential). 16S1P blocks deliver 51.2 V / 15 Ah from 16 cells; 16S7P builds 51.2 V / 100 Ah from 112 — the format’s core value proposition.

North American and European projects. Lithium Werks’ UL 1642 certification shortens the certification path for destinations that require it; BIS coverage supports Indian programs.

AGV, UPS and power-tool duty. The CBAK line’s 10C pulse profile suits starter and tool loads; the 15Ah class halves the BMS channel count of a 6Ah build.

Certifications and Shipping Compliance

Every 32140-class cell ships against the documentation compliance teams ask for first: UN38.3 (the UN Manual of Tests and Criteria test summary required for lithium transport by air and sea), MSDS, IEC 62619 industrial storage safety compliance, and CE declaration. The Lithium Werks AER32140m2A1 additionally holds UL 1642 and BIS; the CBAK 32140 ships with CE, RoHS, UN 38.3 and MSDS. Lot-level documentation — capacity, internal resistance and open-circuit voltage per cell — accompanies each shipment.

OEM/ODM Customization and Ordering

CMX Battery supplies Lithium Werks AER32140m2A1 and CBAK 32140 cells as a Grade-A cells supplier for OEM programs: welded tabs or connectors to your drawing, shrink-wrap or label branding with your model number, BMS integration for pack orders from 12 V to 51.2 V, and packaging configured to your line. Cells ship at partial SOC with per-lot test data. MOQ 100 pcs, samples available, 15-day lead time; minimum order quantities and lead times are confirmed with your quotation, which comes back within 24 hours. Warranty is one year from date of shipment against manufacturing defects, alongside the manufacturer warranty where applicable.

Frequently Asked Questions

What is a 32140 LiFePO4 battery?
A 32140 LiFePO4 battery is a rechargeable cylindrical LFP cell — Ø33 × 140 mm nominal, 15 Ah at 3.2 V (≈48 Wh) — the designation used by CBAK and Lithium Werks for the 15Ah cylindrical format, with published energy density above 172 Wh/kg on the Lithium Werks line.

What is the difference between 32140 and 33140?
Same 15Ah envelope, different manufacturers: 32140 covers CBAK and Lithium Werks lines; 33140 covers Gotion and EVE. They are drop-in substitutes in most pack designs — verify holder clearance, discharge-rate rating and charge-temperature window before substituting.

Does the 32140 have UL certification?
The Lithium Werks AER32140m2A1 is certified to UL 1642 alongside UN 38.3 and BIS — which shortens the certification path for North American and European projects. The CBAK 32140 ships with CE, RoHS, UN 38.3 and MSDS.

What is the cycle life of a 32140 LiFePO4 cell?
Lithium Werks publishes above 3,500 cycles at 80% DOD at room temperature and above 2,000 cycles at 45 °C. CBAK advertises long-life variants in the channel; anchor procurement to the manufacturer datasheet and its test conditions.

How many 32140 cells for a 51.2V 15Ah battery?
16 cells (16S1P): a 51.2 V nominal pack needs 16 cells in series at 3.2 V per cell, and the 15Ah format needs no parallel strings. The same pack in 6Ah 32700 cells requires 48 cells (16S3P).

Can I use a 32140 instead of a 33140?
In most pack designs, yes — the two standards share the same envelope and electrical format (3.2 V, 15 Ah, 3.65 V charge cut-off, 2.0 V discharge cut-off). Verify three items before substituting: holder clearance for the measured diameter, discharge-rate rating against your load, and charge-temperature window.

Is the 32140 available for OEM programs?
Yes — welded tabs or connectors, custom labels with your model number, BMS integration and tailored packaging are standard services, with per-lot test data on every shipment. MOQ 100 pcs, 15-day lead time.

Request a Quote

Send your target voltage, capacity, continuous current and destination market — you will receive a datasheet-matched quotation, sample options and lead time within 24 hours.

Or email sales@cmxbattery.com. Download the typical specifications overview: IFR32140 Typical Specifications Overview (PDF). The controlled product datasheet is issued with your quotation on request.