14430 Lithium Battery 550mAh 3.7V | INR14430 Cylindrical Li-ion Cell

14430 Lithium Battery — INR14430 550mAh 3.7V Cylindrical Li-ion Cell

The 14430 lithium battery (model INR14430) is a cylindrical li-ion cell measuring 14 mm in diameter and 43 mm in height, delivering 550 mAh at a nominal 3.7 V — about 2.0 Wh in a steel can that drops into standard beauty-instrument bays. It is charged by standard CC-CV at 4.20 V, rated for 1C-class charge and 3C-class pulse discharge, and shipped against controlled documentation with UN38.3, IEC 62133-2 and RoHS paperwork. CMX Battery supplies it with per-lot capacity, IR and OCV test data, OEM branding, and a downloadable datasheet.

Table of contents: Specifications · What Is a 14430 Battery? · 14mm Family Comparison · Charge & Discharge · Cycle Life & Safety · Applications · Certifications · OEM/ODM & Ordering · FAQ

14430 Battery Specifications

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

What Is a 14430 Battery?

A 14430 battery is a rechargeable cylindrical lithium-ion cell whose designation encodes its geometry: 14 mm diameter, 43 mm height, cylindrical format. At 43 mm it is 55% longer than a 14280 cell and 7 mm shorter than a 14500, sitting in the middle of the 14 mm family — the format most personal-care OEMs standardize on when a 14280 cannot deliver enough runtime and a 14500 will not fit the bay.

Like all li-ion cylindricals, the 14430 delivers 3.7 V nominal (4.20 V fully charged), so it substitutes directly only in devices designed for li-ion input. 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.

14430 vs 14280, 14500 and 14650: 14mm Family Comparison

All four models share a 14 mm diameter; length — and therefore capacity — is what separates them. Use this table to confirm fitment before sampling.

A 14280 needs 15 mm of extra bay depth to accept the 14430 — a mechanical redesign, not a swap. If your compartment is already 43 mm, the 14430 roughly doubles the runtime of the 14280 at the same voltage and protection architecture. For the shorter toothbrush and TWS form factors, see the 14280 lithium battery page.

14430 Charge and Discharge Profile

Charging follows CC-CV: constant current at the standard rate until the terminal voltage reaches 4.20 V ± 0.05 V, then hold at 4.20 V until the current tapers to the cut-off threshold. The maximum charge current is 1C (550 mA); routine fast charging above the standard rate accelerates capacity fade and is not recommended for cycle use. Charge temperature is specified 0–45 °C — below 0 °C, charge current must be limited or charging skipped entirely to avoid lithium plating on the anode.

Discharging is rated 3C-class (1.65 A) for pulse loads such as motor bursts in beauty instruments; continuous operation should stay at or below 2C (1.1 A), with a 2.75 V cut-off. Discharge must terminate if the cell surface exceeds 60 °C.

14430 Cycle Life and Safety Performance

Cycle life for this format is typically specified at ≥70% of initial capacity after 300 cycles of standard-rate discharge at room temperature. (Cycling at high temperature ≥35 °C, high rate, or high voltage shortens life.)

Safety testing for production cells of this format covers over-discharge, overcharge, external short circuit, drop, heating and crush — all with no fire, no explosion, no leakage. A CID safety vent and optional protection circuit provide overpressure and overcurrent protection inside the sealed steel can.

14430 Battery Applications

Beauty and personal-care instruments. The dominant application for this format. Facial cleansers, massage guns, electric hair clippers and skincare devices draw 0.5–2 A motor bursts that fit the 3C-class pulse envelope, and the 550 mAh capacity covers 45–90 minutes of typical tool runtime between dock charges.

Electric toothbrushes and shavers (long-runtime models). Where a 14280 cell cannot cover a full week of twice-daily brushing, the 14430’s 55% length increase extends runtime without changing the protection circuit or charger architecture.

TWS charging cases (larger formats). Multi-cell case designs that prioritize capacity over the tightest envelope use 14430-class cells on standard case PCBs.

Toys, RC and hobby electronics. A protected 3.7 V source in a mid-size shell, replacing two-cell NiMH stacks with less volume and weight.

Portable medical and wellness devices. Thermometers, blood-pressure monitors and similar low-drain instruments value the format’s documentation package and per-lot test data.

Certifications and Shipping Compliance

Every INR14430 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 62133-2 cell safety compliance, CB report, and RoHS 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. For background on cell-level safety standards, see the IEC portal.

OEM/ODM Customization and Ordering

CMX Battery supplies the INR14430 for OEM programs: welded tabs or connectors to your drawing, shrink-wrap or label branding with your model number, and packaging configured to your line. Cells ship at partial SOC with per-lot test data. Samples are available for bench validation before volume commitment; minimum order quantities, lead times and per-lot test-data format 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 14430 battery?
A 14430 battery is a small rechargeable cylindrical li-ion cell (Ø14 × 43 mm, 550 mAh, 3.7 V nominal); the digits encode its diameter and height in millimetres. Our model is INR14430.

Is the 14430 battery rechargeable?
Yes. It is a secondary li-ion cell rated for repeated CC-CV cycling at 4.20 V, typically specified at ≥70% capacity retention after 300 standard cycles.

What is a 14430 battery used for?
Beauty instruments and personal-care devices — facial cleansers, massage guns, hair clippers, skincare tools — plus long-runtime toothbrushes, larger TWS cases and mid-size hobby electronics.

How do you charge a 14430 battery?
CC-CV to 4.20 V ± 0.05 V with taper cut-off; maximum charge current is 1C (550 mA), and charging is specified only within 0–45 °C. Below 0 °C, reduce current or skip charging.

What is the maximum discharge current?
3C-class (1.65 A) for pulse loads such as motor bursts; continuous operation should stay at or below 2C (1.1 A) to a 2.75 V cut-off.

Can I use a 14280 instead of a 14430?
Only if your bay accepts the length difference. The 14280 is 15 mm shorter and delivers roughly half the capacity — a runtime compromise, but the same 14 mm diameter, 3.7 V platform and protection architecture.

Is the 14430 available with OEM branding?
Yes — welded tabs or connectors, custom labels with your model number and tailored packaging are standard services, with per-lot test data on every shipment.

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: INR14430 Typical Specifications Overview (PDF). The controlled product datasheet is issued with your quotation on request.