THOR 804050 3.7V 1800mAh lithium polymer battery with PCM protection, red and black lead wires, and 2-pin connector

THOR 804050 3.7V 1800mAh LiPo battery dimension drawing showing T×W×L = 8.0 × 40 × 52 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

THOR-804050 provides 1800mAh in an 8 × 40 × 50mm bare-cell envelope for designs that prioritize shorter length over minimum thickness. THOR-654060 provides the same capacity and width with 6.5mm thickness, but requires 60mm length. THOR-903659 raises capacity to 2500mAh in a thicker 9 × 36 × 59mm format when more energy and additional length are acceptable.

The 8 × 40 × 50mm value is the nominal bare-cell envelope. The current PCM-equipped drawing is approximately 8 × 40 × 52mm. PCM layout, insulation, connector position, lead exit and wire bend radius must be included in the final cavity and verified with production-intent samples.

At 3.7V nominal and 1800mAh, THOR-804050 stores 6.66Wh. Runtime depends on the device load, amplifier or radio duty cycle, regulator efficiency, cutoff voltage, temperature and aging. Validate continuous and peak current rather than inferring it from capacity or cell thickness.

THOR-804050 Engineering & Fit Questions

Should I choose THOR-804050 or THOR-654060 for 1800mAh?

Choose THOR-804050 when a shorter 50mm cell length is the main constraint and 8mm nominal thickness is available. Choose THOR-654060↗ when lower 6.5mm thickness is more important and the cavity can accept 60mm length.

What finished-pack size should be expected for THOR-804050?

The nominal bare-cell size is 8 × 40 × 50mm. The current PCM-equipped drawing is approximately 8 × 40 × 52mm, while insulation, lead exit, connector and wire routing can require additional clearance. Approve the enclosure against the final drawing and samples.

Is THOR-804050 suitable for pulsed audio or radio loads?

Suitability depends on the actual peak magnitude and duration, average load, thermal conditions, PCM, wire and connector. The 1800mAh capacity and 6.66Wh energy rating do not by themselves establish pulse or continuous-current capability.

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-804050
Battery Type	Lithium Polymer (LiPo) pouch cell
Capacity	1800 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 1800mAh Lithium Polymer (LiPo) Battery with Connector | THOR-804050

THOR-804050 is a 3.7V 1800mAh LiPo pouch cell with 6.66Wh nominal energy and an 8 × 40 × 50mm bare-cell envelope. It is 10mm shorter but 1.5mm thicker than THOR-654060 at the same capacity, giving engineers a compact-length alternative for handheld and audio enclosures. Final pack fit and electrical suitability 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-804050

Mechanical Characteristics

Model	THOR-804050
Cell Type	Lithium Polymer (LiPo) pouch cell
Configuration	1S1P (customizable)
Dimensions (T×W×L)	8 × 40 × 50 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. 34 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	1800 mAh
Energy	6.66 Wh
Charge Voltage	4.20 ± 0.03 V
Standard Charge	360 mA (0.2C), CC/CV to 4.20 V
Charge Cut-off Current	0.02C
Max. Charge Current	1.8 A (up to 1C), model-specific
Discharge Cut-off Voltage	3.0 V
Standard Discharge	360 mA (0.2C)
Max. Continuous Discharge	1.8 A (1C), model-specific
Internal Resistance	≤ 70 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-804050

Portable Speakers & Audio Electronics — PrimaryThe compact 40 × 50mm footprint and 6.66Wh capacity can suit portable speaker or audio-electronics housings that can accommodate 8mm nominal cell depth. Confirm amplifier peaks, thermal behavior and final pack clearance.

Compact Handheld InstrumentsTHOR-804050 can suit handheld meters or control instruments where shorter battery length is more important than minimizing thickness. Validate display, processor, sensing and transient loads.

Handheld Communication AccessoriesThe cell may suit communication accessories after transmit or audio peaks, connector choice, thermal conditions and the protected-pack envelope are confirmed.