32700 LiFePO4 Battery 3.2V 6000mAh | IFR32700 LFP Cylindrical Cell

32700 LiFePO4 Battery — IFR32700 6000mAh 3.2V Cylindrical LFP Cell

The 32700 LiFePO4 battery (model IFR32700) is the industry-mainstream 6Ah cylindrical LFP format — and the format CMX Battery produces on its own line. Ø32.2 × 70.5 mm, 6000 mAh at 3.2 V nominal (19.2 Wh), with ≤8 mΩ internal resistance, 1C CC/CV charging and 2000+ cycles at 100% DOD. It anchors the large cylindrical ladder: standardized can size, multi-source depth across the industry, and the spec set tier-1 buyers specify for ESS, telecom backup and solar storage programs. Every cell ships 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.

Table of contents: Specifications · What Is a 32700 LiFePO4 Battery? · 32700 vs 32650 · Charge & Discharge · Cycle Life & Safety · Applications · Certifications · OEM/ODM & Ordering · FAQ

32700 LiFePO4 Battery Specifications

Typical values below reflect the CMX production standard for this format, benchmarked against published industry specifications; final parameters ship against the CMX controlled product specification.

What Is a 32700 LiFePO4 Battery?

A 32700 LiFePO4 battery is a rechargeable cylindrical cell whose designation encodes its geometry — 32 mm diameter, 70 mm length — with lithium iron phosphate chemistry at a 3.2 V nominal platform. The IFR prefix is the IEC convention for cylindrical LFP cells (I = lithium-ion, F = iron phosphate, R = round).

The 32700 is the reference 6Ah format across the industry: published benchmark cells include the EVE LF32700 (6.0 Ah, 2,000+ cycles, 10 A), the Sinopoly BP32700H (5.8 Ah, 3,000+ cycles) and the CATL EnerBlue CB32700 (6.0 Ah, 5,000+ cycles, 15 A). Behind those, tier-1 capacity is being built at industrial scale — EVE commissioned a 5 GWh line dedicated to 32700 cylindrical LiFePO4 in September 2025, and Hithium supplies 32700 cells rated above 6,000 cycles. Buying the mainstream format means datasheets, spares and second-source options exist by default.

The cell is a sealed steel can with a CID safety vent; welding is permitted only on the top cap and bottom end, never on the side wall. Its flat 3.2 V discharge curve holds voltage nearly constant across most of the capacity range, so a 16S string (51.2 V nominal) delivers a stable input to storage inverters through most of the discharge.

32700 vs 32650: Choosing the 6Ah Format

Both cells share the Ø32 mm diameter and the 6Ah class; the CMX line differentiates on internal resistance, charge rate and charge window.

A 51.2 V / 15 Ah pack needs 48 cells (16S3P) in either format — pack economics are identical, so the choice comes down to internal resistance, charge rate and charge window. At 3C (18 A), the ≤8 mΩ line dissipates ≈2.6 W per cell against ≈8 W at 25 mΩ, and recovers a full cycle in ≈2.5 hours at 1C versus ≈6 hours at 0.2C. See the full 32650 vs 32700 analysis or the 32650 product page.

IFR32700 Charge and Discharge Profile

Charging follows CC-CV on the LFP profile: constant current up to 1C (6 A) until terminal voltage reaches 3.65 V, then hold at 3.65 V until current tapers below the cut-off threshold, within a 0–60 °C window. Never charge an IFR32700 with a 4.2 V li-ion charger — the 3.65 V ceiling is a hard chemistry limit. The 1C rating recovers a full cycle in approximately 2.5 hours, which matters for solar and day-cycling applications with limited charge windows.

Discharging is rated 3C (18 A) continuous with 60 A pulses. The ≤8 mΩ internal resistance keeps voltage sag at ≈144 mV under full 3C load — roughly a third of the sag on a 25 mΩ cell — which simplifies BMS balancing and extends usable capacity in high-rate strings.

IFR32700 Cycle Life and Safety Performance

Cycle life is specified at 2000+ cycles at 100% DOD to ≥80% capacity retention — in a daily-cycling storage application that translates to five or more years of service. Premium industry lines publish 5,000–6,000+ cycle ratings; compare at your operating temperature and DOD, not the headline number.

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, which is why the format is trusted in telecom cabinets and occupied-space installations.

32700 LiFePO4 Battery Applications

Energy storage systems (ESS). 16S3P blocks deliver 51.2 V / 15 Ah (≈922 Wh) from 48 cells; 16S17P builds 51.2 V / 100 Ah from 272 cells for C&I cabinets. The standardized can keeps holder and fixture costs low at every scale.

Telecom backup. 1C charging shortens recharge windows in remote cabinets; the 0–60 °C charge window suits hot-climate installations without active cooling of the charge path.

Solar storage and off-grid packs. Fast recharge maximizes harvest in limited sun windows; 2000+ cycles at full DOD match daily charge-discharge duty.

Light EV and mobility packs. 3C continuous covers e-scooter, e-rickshaw and AGV drive current, with low internal resistance preserving runtime under load.

Certifications and Shipping Compliance

Every IFR32700 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. Lot-level documentation — capacity, internal resistance and open-circuit voltage per cell — accompanies each shipment so incoming QC starts from data rather than sampling.

OEM/ODM Customization and Ordering

CMX Battery produces the IFR32700 on its own line 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.

Frequently Asked Questions

What is a 32700 LiFePO4 battery?
A 32700 LiFePO4 battery is a rechargeable cylindrical LFP cell rated 6000 mAh at 3.2 V nominal (≈19.2 Wh), Ø32.2 × 70.5 mm — the industry-mainstream 6Ah cylindrical format, produced on the CMX line with ≤8 mΩ internal resistance and 1C charging.

Who makes 32700 LiFePO4 batteries?
The format is produced at industrial scale by EVE (5 GWh dedicated line), Tianjin Lishen, REPT BATTERO, Hithium, Dynanonic and Aokly, with retail-visible benchmarks from EVE, Sinopoly and CATL. CMX Battery produces the 32700 on its own line as a Grade-A cell supplier.

What is the difference between 32700 and 32650?
Both are Ø32 mm, 6Ah cylindrical LFP cells. The 32700 line offers ≤8 mΩ internal resistance, 1C CC/CV charging and a 0–60 °C charge window; the 32650 ships with ≤25 mΩ and 0.2C standard charge in a 0–45 °C window. A 51.2 V / 15 Ah pack needs 48 cells in either format.

How fast can you charge a 32700 LiFePO4 battery?
Up to 1C (6 A) CC/CV to 3.65 V — a full cycle in approximately 2.5 hours versus ≈6 hours at the 0.2C rate common on 32650-class cells. Charge window is 0–60 °C; never use a 4.2 V li-ion charger.

How many 32700 cells for a 51.2V 100Ah battery?
272 cells (16S17P): 16 in series for 51.2 V nominal, 17 in parallel for 102 Ah. The same pack in the 15Ah 32140/33140 format needs 112 cells (16S7P).

How long does an IFR32700 last?
2000+ cycles at 100% DOD to ≥80% capacity retention — five or more years in daily-cycling service. Premium industry lines publish 5,000–6,000+ cycle ratings at favorable test conditions.

Is the 32700 LiFePO4 available for OEM programs?
Yes — the CMX production line supports welded tabs or connectors, custom labels with your model number, BMS integration and tailored packaging, 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 mechanical envelope — 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: IFR32700 Typical Specifications Overview (PDF). The controlled product datasheet is issued with your quotation on request.