THOR 402525 3.7V 200mAh lithium polymer battery with PCM protection, red and black lead wires, and 2-pin connector

THOR 402525 3.7V 200mAh LiPo battery dimension drawing showing T×W×L = 4.0 × 25 × 27 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

Exploded multilayer structure of a LiPo pouch cell showing tabs, pouch film, electrodes, separator, current collectors and insulating layers

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Description

THOR-402525 is the near-square 200mAh option, using a 4 × 25 × 25mm bare-cell envelope. THOR-402030 keeps the same thickness and capacity in a narrower, longer 20 × 30mm footprint. THOR-502025 keeps 200mAh in a narrower 20 × 25mm footprint but increases thickness to 5mm. Choose THOR-402525 when balanced plan dimensions are more useful than minimum width.

The 4 × 25 × 25mm value is the nominal bare-cell envelope. PCM layout, insulation, connector body, lead exit and wire bend radius can increase the finished dimensions, which is significant in a compact square cavity.

At 3.7V nominal and 200mAh, THOR-402525 stores 0.74Wh. Runtime depends on standby current, active duty cycle, wireless or sensor pulses, regulator efficiency, cutoff voltage, temperature and aging. Validate voltage sag and pulse demand with the final electronics.

THOR-402525 Engineering & Fit Questions

How does THOR-402525 compare with other 200mAh geometries?

THOR-402525 uses a near-square 4 × 25 × 25mm envelope. THOR-402030↗ keeps the same thickness and capacity in a narrower 20 × 30mm footprint, while THOR-502025↗ uses a narrower 20 × 25mm footprint with 5mm thickness.

Is THOR-602025 the same product as THOR-402525?

No. THOR-402525 is 4 × 25 × 25mm, while THOR-602025↗ is a separate 200mAh model with a 6 × 20 × 25mm bare-cell envelope. Select by the enclosure geometry, not by capacity alone.

What should be checked before using THOR-402525?

Confirm the finished-pack envelope, connector and polarity, wire routing, standby and active load, pulse demand, cutoff voltage, charging method and target runtime in the actual device.

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-402525
Battery Type	Lithium Polymer (LiPo) pouch cell
Capacity	200 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 200mAh Lithium Polymer (LiPo) Battery with Connector | THOR-402525

THOR-402525 is a 3.7V 200mAh LiPo pouch cell with 0.74Wh nominal energy and a compact 4 × 25 × 25mm bare-cell envelope. Its near-square footprint differs from narrower 200mAh formats and can suit enclosures that have balanced width and length but limited depth. Final pack fit and pulse-load behavior require validation.

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-402525

Mechanical Characteristics

Model	THOR-402525
Cell Type	Lithium Polymer (LiPo) pouch cell
Configuration	1S1P (customizable)
Dimensions (T×W×L)	4 × 25 × 25 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. 5 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	200 mAh
Energy	0.74 Wh
Charge Voltage	4.20 ± 0.03 V
Standard Charge	40 mA (0.2C), CC/CV to 4.20 V
Charge Cut-off Current	0.02C
Max. Charge Current	200 mA (up to 1C), model-specific
Discharge Cut-off Voltage	3.0 V
Standard Discharge	40 mA (0.2C)
Max. Continuous Discharge	200 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-402525

Compact Square Wearable Modules — PrimaryThe near-square 25 × 25mm footprint can suit wearable control modules or compact bezels designed around balanced width and length. Confirm sensor, display, radio and protected-pack requirements.

Wireless Dial & Control SensorsTHOR-402525 may suit compact dial or control sensors after standby drain, wake frequency, transmit pulses and final pack clearance are validated.

Rechargeable Smart Tags & TrackersThe 0.74Wh nominal energy can support low-duty tags or trackers when reporting interval, cutoff voltage, connector placement and enclosure fit are verified.