THOR 302030 3.7V 120mAh lithium polymer battery with PCM protection, red and black lead wires, and 2-pin connector

THOR 302030 3.7V 120mAh LiPo battery dimension drawing showing T×W×L = 3 × 20 × 32 mm (with PCM) and 2-pin connector polarity

Customizable LiPo battery connector and wire harness options, with PH 2.0 mm shown for reference

Lithium polymer (LiPo) battery connector polarity guide showing red positive and black negative wires with correct and incorrect connection examples

THOR lithium polymer (LiPo) battery discharge performance comparison with discharge curves and microscopic electrode material images

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Description

The THOR-302030 is a 3.7V 120mAh lithium polymer cell with a 3 × 20 × 30mm bare-cell envelope and 0.44Wh nominal energy. THOR-302530 expands width to 25mm for 150mAh, while THOR-302020 shortens length to 20mm for 100mAh. THOR-402030 keeps the 20 × 30mm footprint but increases thickness to 4mm for 200mAh.

The 3mm profile is a technical-fit candidate for adhesive medical patches, thin wearable modules and rechargeable wireless sensor labels after flex, pressure and enclosure stiffness are evaluated. The current configuration indicates approximately 2mm additional length with the PCM; connector, wire exit, insulation, pouch expansion and tolerances must also be allowed for.

The 120mAh rating supports early energy budgeting but does not define pulse-current capability or guaranteed runtime. Validate standby drain, radio or sensor peaks, conversion losses, temperature, cutoff voltage, charging and protection settings against the intended duty cycle.

THOR-302030 Engineering & Fit Questions

How does THOR-302030 compare with THOR-302530?

THOR-302530↗ keeps 3mm thickness and 30mm length but increases width to 25mm and capacity to 150mAh.

What changes with THOR-402030?

THOR-402030↗ uses the same 20 x 30mm footprint but increases thickness to 4mm and capacity to 200mAh.

Are 3 x 20 x 30mm the finished-pack dimensions?

No. They are bare-cell dimensions. Allow for the PCM, wires, connector, insulation, expansion and tolerances.

Stable 3.7 V nominal output for reliable power delivery
Long cycle life — typically several hundred cycles, cost-efficient
Built-in protection: overcharge, over-discharge, short-circuit
Custom size, capacity, connector & PCM/BMS
UN38.3 / MSDS ready; CE, KC, ROHS on request

Why Choose THOR Power

A vertically integrated lithium battery manufacturer (Dengzhou Xinju New Energy) with the scale and engineering depth to deliver custom LiPo cells reliably at volume.

3 factories, 800+ staff

Source-manufacturer scale — not a trading company.

200+ engineers

R&D led by a chief battery scientist for rapid custom design.

60,000 pouch cells / day

High-volume manufacturing with products exported across the US, Europe, Japan & Korea, SE Asia, Latin America and Africa.

End-to-end quality control

From raw material to finished cell.

Factory Photos

Automation Equipment

Testing Equipment

Warehouse & Certifications

Model	THOR-302030
Battery Type	Lithium Polymer (LiPo) pouch cell
Capacity	120 mAh
Certifications	UN38.3 / MSDS (IEC 62133-2, CE, KC on request)
MOQ	From 10 pcs for samples; production quoted per project
Customization	Size, capacity, connector, wire length, PCM/BMS, NTC, label

3.7V 120mAh Lithium Polymer (LiPo) Battery with Connector | THOR-302030

The THOR-302030 is a 120mAh 3.7V lithium polymer battery measuring 3.0×20×30mm with a weight of approximately 2.4g. Its ultra-flat 3.0mm thickness makes it an ideal choice for smartwatch straps, adhesive medical patches, wireless sensor nodes, and thin-form wearable electronics. With 0.44Wh of stored energy and a wide 20×30mm footprint, this cell maximizes capacity within flat, card-like enclosures where vertical space is severely limited.

Wholesale Pricing (USD)

Order Quantity	Reference Unit Price
10 – 99 pcs	—
100 – 999 pcs	—
1,000 – 9,999 pcs	—
10,000+ pcs	Contact for best price

Reference pricing for this model is being finalised. Talk to a Battery Engineer for a same-day quote.

Prices are for standard configuration reference only. Final pricing may vary by cell size, capacity, connector, wire length, PCM/BMS, label, packaging, certification requirements, and order quantity. Shipping cost is not included. MOQ: from 10 pcs for samples; production quantities are quoted per project.

Get an Engineering Quote

Custom sizes, capacities, connectors & PCM/BMS available. MOQ-friendly. Samples in days.

Battery Specification — THOR-302030

Mechanical Characteristics

Model	THOR-302030
Cell Type	Lithium Polymer (LiPo) pouch cell
Configuration	1S1P (customizable)
Dimensions (T×W×L)	3 × 20 × 30 mm (bare cell)
Dimension Tolerance	Thickness ±0.2 mm; Width/Length ±0.5 mm
With PCM Board	Length approx. +2 mm vs bare cell
Weight	Approx. 4 g
PCM / BMS	Included (standard)
NTC Thermistor	Optional
Connector	PH2.0 / Molex 1.25 (custom available)
Wire Length	Customizable
UN38.3	Test Summary available
Safety Data Sheet	SDS / MSDS available
IEC 62133-2	Available for selected models
RoHS / REACH	Compliance documents available

Electrical Specifications

Nominal Voltage	3.7 V
Rated Capacity	120 mAh
Energy	0.44 Wh
Charge Voltage	4.20 ± 0.03 V
Standard Charge	24 mA (0.2C), CC/CV to 4.20 V
Charge Cut-off Current	0.02C
Max. Charge Current	120 mA (up to 1C), model-specific
Discharge Cut-off Voltage	3.0 V
Standard Discharge	24 mA (0.2C)
Max. Continuous Discharge	120 mA (1C), model-specific
Internal Resistance	≤ 130 mΩ (1 kHz, 50% SOC, 25℃)
Cycle Life	≥ 500 cycles, ≥ 80% capacity
Cycle Test Condition	0.5C charge / 0.5C discharge, 3.0-4.2 V, 25 ± 2℃
Charge Temperature	0℃ ~ 45℃
Discharge Temperature	-20℃ ~ 60℃
Storage Temperature	-10℃ ~ 45℃ (≤ 1 month)
Capacity Retention	≥ 90% after 28 days @ 25℃
Note	Higher discharge-rate designs available upon engineering review

Protection Circuit (when PCM equipped)

Overcharge Detection	4.28 ± 0.03 V per cell
Overcharge Release	4.08 ± 0.05 V
Over-discharge Detection	2.75 ± 0.05 V
Over-discharge Release	3.00 ± 0.05 V
Overcurrent Protection	Per PCM design (2A ~ 5A typical)
Short-circuit Protection	Yes, auto-recovery

Values shown are THOR Power standard specifications for this cell class. Final parameters are confirmed in the engineering datasheet for your configuration.

Typical Applications — THOR-302030

Adhesive Medical Sensor PatchesPrimary technical-fit use after bending, pressure, skin temperature, duty cycle and finished-pack clearance are validated.

Thin Wearable ModulesFor low-profile wearables that can accommodate the 20 x 30mm footprint plus protection, leads and insulation.

Rechargeable Wireless Sensor LabelsFor sensor labels after standby drain, radio peaks, enclosure stiffness, antenna spacing and charging are reviewed.