Spark Logic

18650 protected battery pack pinout

The Honcell HCC18650FC combines one cylindrical cell with a protection circuit module and a two-pin JST VH connector.

Bare cylindrical cell 2 contacts

Protected pack connector

2 contacts Current package

Molicel and Honcell · Honcell HCC18650FC · JST VHR-2N, pin 1 at the red lead in the drawing on p. 5.

Protected pack connector pinout

Protected pack connector
JST VHR-2N contacts by number. Match pin 1 to the red lead in the manufacturer drawing and verify the mating harness polarity.
Selected pin details

1 · P+

Positive terminal · Power

Red lead from pack positive to pin 1 of the JST VHR-2N.

Honcell HCC18650FC datasheet, p. 5

Electrical limits · Link to this pin

All 2 pins

PinSignalDirectionFunction
1P+ Positive terminalPositive terminal Red lead from pack positive to pin 1 of the JST VHR-2N.
2P− Negative terminalNegative terminal Black lead from protected pack return to pin 2 of the JST VHR-2N.

Signal assignments

Pack output

Both load connections go through the external pack connector. Match the exact connector and polarity of the harness. Consult the pack maker for a compatible charger.

Electrical limits

ParameterLimitConditions and source
Rated voltage and capacity3.7 V · 2.6 Ah typical3.7 V · 2.6 Ah typical 2.55 Ah minimum at the manufacturer’s 0.2 C discharge test and 23 ± 2 °C. Honcell HCC18650FC datasheet, § 3
Charge and discharge endpoints4.2 V · 2.75 V4.2 V · 2.75 V Manufacturer charge and discharge figures. Coordinate the equipment’s cutoff with the pack protection circuit, which has separate detection and release thresholds. Honcell HCC18650FC datasheet, §§ 3 and 5.4
Continuous discharge limit2.6 A2.6 A Pack-specific maximum at the stated −20 to +60 °C discharge ambient. Check connector, harness and enclosure ratings separately. Honcell HCC18650FC datasheet, § 3
Pack dimensions67.0 × 19.5 × 22.5 mm max.67.0 × 19.5 × 22.5 mm max. Excludes the connector and the 300 ± 5 mm leads shown in the assembly drawing. Honcell HCC18650FC datasheet, § 4.1

Models and documents

This reference covers the bare Molicel INR-18650-P28A and the separately documented Honcell HCC18650FC protected assembly. Check the exact manufacturer code for chemistry, voltage, capacity, load rating, protection and fit.

HCC18650FC
3.7 V nominal, 2600 mAh typical, with the connector and protection circuit in ED-RE-02.