THOR 502030 3.7V 250mAh lithium polymer battery with PCM protection, red and black lead wires, and 2-pin connector

THOR 502030 3.7V 250mAh LiPo battery dimension drawing showing T×W×L = 5.0 × 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

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

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Description

Choose THOR-502030 when a 20 × 30mm bare-cell footprint is available and nominal cell thickness can reach 5mm. Within this footprint family, THOR-402030 is thinner at 4mm and 200mAh, THOR-452030 provides 240mAh at 4.5mm, and THOR-602030 provides 300mAh at 6mm. Compare the available enclosure depth with the capacity needed by the actual duty cycle before selecting a sample.

The nominal 5.0 × 20 × 30mm figure describes the bare pouch cell. The existing PCM-equipped drawing indicates approximately 5.0 × 20 × 32mm, but the usable cavity must also accommodate the PCM position, insulation, connector body, lead-wire exit and bend radius. Confirm connector polarity and allow for manufacturing tolerance and normal pouch-cell expansion before freezing the enclosure.

At 3.7V nominal, 250mAh corresponds to approximately 0.93Wh. Device runtime depends on average and transmit-pulse current, regulator efficiency, cutoff voltage, operating temperature and cell aging. Validate peak current and voltage sag against the approved cell, PCM, wires and connector; capacity alone does not establish suitability. Confirm the charging profile, optional NTC needs and final harness drawing before sample approval.

THOR-502030 Engineering & Fit Questions

What are the bare-cell and finished dimensions of THOR-502030?

The nominal bare-cell envelope is 5 × 20 × 30mm. The current PCM-equipped drawing shows approximately 5 × 20 × 32mm. The enclosure must also allow for insulation, connector body, lead-wire exit, bend radius, manufacturing tolerance and normal pouch-cell expansion.

How does THOR-502030 fit within the 20 × 30mm thickness ladder?

THOR-402030↗ is 4mm thick at 200mAh, THOR-452030↗ is 4.5mm at 240mAh, and THOR-602030↗ is 6mm at 300mAh. THOR-502030 provides the 5mm, 250mAh step between these alternatives.

What does the approximately 0.93Wh nominal energy mean for runtime?

It is the energy calculated from 3.7V and 250mAh, not a guaranteed operating time. Runtime depends on average draw, radio or sensor peaks, regulator efficiency, cutoff voltage, temperature and aging. Validate the real duty cycle before choosing the cell.

What OEM integration details must be confirmed?

Confirm the approved finished drawing, PCM current limits, connector family and polarity, wire gauge and length, optional NTC, charging profile, cable exit and bend radius, plus continuous and peak load in the final 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-502030
Battery Type	Lithium Polymer (LiPo) pouch cell
Capacity	250 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

THOR-502030 3.7V 250mAh LiPo Battery – 5×20×30mm

THOR-502030 is a 1S 3.7V 250mAh lithium polymer (LiPo) battery built around a nominal 5 × 20 × 30mm bare pouch cell (0.93Wh). The current PCM-equipped drawing shows approximately 5 × 20 × 32mm; confirm the finished assembly envelope before tooling. Its compact footprint can suit small wireless sensors, wearable monitoring modules and Bluetooth accessories when the device load and target runtime are validated. PCM, connector, polarity, wire exit and optional NTC can be reviewed for OEM integration.

Wholesale Pricing (USD)

Order Quantity	Reference Unit Price
10 – 99 pcs	$1.80 / pc
100 – 999 pcs	$1.30 / pc
1,000 – 9,999 pcs	$1.10 / pc
10,000+ pcs	Contact for best price

Reference pricing is shown above. Talk to a Battery Engineer for a project-specific quotation.

Reference unit pricing shown above is for standard configuration only. Final pricing may vary by cell configuration, connector, wire length, PCM/BMS, labeling, 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-502030

Mechanical Characteristics

Model	THOR-502030
Cell Type	Lithium Polymer (LiPo) pouch cell
Configuration	1S1P (customizable)
Dimensions (T×W×L)	5 × 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. 6 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	250 mAh
Energy	0.93 Wh
Charge Voltage	4.20 ± 0.03 V
Standard Charge	50 mA (0.2C), CC/CV to 4.20 V
Charge Cut-off Current	0.02C
Max. Charge Current	250 mA (up to 1C), model-specific
Discharge Cut-off Voltage	3.0 V
Standard Discharge	50 mA (0.2C)
Max. Continuous Discharge	250 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-502030

Compact Wireless Sensor Nodes — PrimaryThe 5 × 20 × 30mm bare-cell format can suit small rechargeable sensor modules with limited board and battery space. Check standby draw, transmit peaks, operating temperature and required service interval before sample approval.

Wearable Monitoring ModulesA 5mm nominal pouch profile may fit compact wearable electronics where enclosure depth and weight matter. Confirm the finished-pack envelope, skin-side temperature exposure, charging method and target runtime in the actual device.

Bluetooth Tracking AccessoriesThe 20 × 30mm footprint can be considered for small Bluetooth tracking devices if the enclosure accepts the PCM and wire exit. Verify radio pulse current, standby consumption, antenna clearance and connector polarity.

Miniature Diagnostic InstrumentsSuitable for compact rechargeable measurement accessories that can accommodate the finished 502030 assembly. Confirm sensor and display duty cycle, peak load, cutoff behavior and the required operating time before selection.