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Description

Choose THOR-125585 when the project needs approximately 8.5Ah of capacity but cannot accommodate the longer 100–120mm pouch formats commonly used for high-capacity LiPo cells. Its 55 × 85mm footprint keeps the cell comparatively short while accepting a 12mm nominal thickness. Compared with thinner 8000mAh formats such as THOR-7565121↗, THOR-125585 trades additional thickness for reduced overall length. This makes it a different enclosure strategy rather than simply a larger battery.

At this capacity level, the design decision should be based on the complete battery system rather than nominal mAh alone. PCM/BMS size, current path, wire gauge, connector selection, mechanical retention, pouch support, charging time and final finished-pack dimensions can materially affect the usable enclosure. Because a released THOR-125585 finished-pack configuration is not currently established in this SKU content, these details should remain project-specific until the production-intent pack is defined.

At 3.7V nominal, 8500mAh corresponds to 31.45Wh. The calculated catalogue-envelope energy density is approximately 560Wh/L based on the nominal 12 × 55 × 85mm format. This describes stored energy per envelope volume, not discharge capability. Continuous current, peak current, PCM/BMS design, thermal behavior and charging requirements must be validated separately for the final system.

THOR-125585 Engineering & Fit Questions

What does 8500mAh mean in the 12×55×85mm THOR-125585 format?

8500mAh is the nominal capacity at 3.7V, corresponding to 31.45Wh of stored energy. The 12×55×85mm catalogue envelope produces a calculated volumetric energy density of approximately 560Wh/L. This is a calculated benchmark based on nominal dimensions, not a laboratory-certified figure. Usable runtime depends on load current, cut-off voltage and ambient temperature.

Is THOR-125585 a high-discharge battery?

No released continuous or peak current data is currently published for this SKU. The 8500mAh capacity and 12mm thickness indicate a high-energy-density geometry optimised for runtime rather than high-rate discharge. If the application requires sustained currents above 1C (8.5A) or high peak pulses, confirm the discharge specification with THOR Power engineering before committing the cell to the design.

How does THOR-125585 compare with thinner 8000mAh alternatives such as THOR-7565121?

THOR-7565121↗ is an 8000mAh cell in a thinner but significantly longer pouch format. THOR-125585 accepts 12mm thickness to keep the footprint at 55×85mm, reducing overall length. The choice depends on enclosure geometry: a thinner cavity favours the 7565121; a shorter but deeper cavity favours the 125585. Both require separate finished-pack design confirmation.

What finished-pack information must be confirmed before enclosure design?

THOR-125585 does not yet have a released standard finished-pack configuration in this public SKU content. PCM or BMS dimensions, connector type and pitch, wire gauge and length, NTC placement, mechanical retention method and final pack outline must all be defined on a project-specific basis. Contact THOR Power engineering with enclosure constraints and load requirements to receive a finished-pack proposal.

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-125585
Battery Type	Lithium Polymer (LiPo) pouch cell
Capacity	8500 mAh
Certifications	UN38.3 / MSDS (IEC 62133-2, CE, KC on request)
MOQ	10 pcs (samples available)
Customization	Size, capacity, connector, wire length, PCM/BMS, NTC, label

THOR-125585 3.7V 8500mAh LiPo Battery – 12×55×85mm

Name: THOR-125585 3.7V 8500mAh LiPo Battery – 12×55×85mm
Brand: THOR Power
SKU: THOR-125585

THOR-125585 is a 1S 3.7V 8500mAh lithium polymer battery in a nominal 12 × 55 × 85mm catalogue geometry, providing 31.45Wh. Based on nominal capacity and envelope dimensions, the cell corresponds to approximately 560Wh/L calculated volumetric energy density, placing it among the higher-density large-capacity formats in THOR Power’s 2026 catalogue benchmark. Final pack dimensions, protection, connector and wire configuration must be confirmed for the actual project.

Get an Engineering Quote

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

Battery Specification — THOR-125585

Mechanical Characteristics

Model	THOR-125585
Cell Type	Lithium Polymer (LiPo) pouch cell
Configuration	1S1P (customizable)
Dimensions (T×W×L)	12 × 55 × 85 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. 118 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	8500 mAh
Energy	31.45 Wh
Charge Voltage	4.20 ± 0.03 V
Standard Charge	1.7 A (0.2C), CC/CV to 4.20 V
Charge Cut-off Current	0.02C
Max. Charge Current	8.5 A (up to 1C), model-specific
Discharge Cut-off Voltage	3.0 V
Standard Discharge	1.7 A (0.2C)
Max. Continuous Discharge	8.5 A (1C), model-specific
Internal Resistance	≤ 30 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-125585

Industrial Handheld & Field TerminalsTHOR-125585 can suit high-runtime industrial handheld and field terminals where the enclosure can accept a thicker 12mm battery but benefits from a shorter 55 x 85mm footprint. Confirm display, processor, communications and peak-load requirements together with the final protection and wiring design.

Portable HMI & Commissioning EquipmentThe 31.45Wh capacity can support portable HMI and commissioning devices that combine display, wireless communication and control electronics. Final selection should confirm load profile, charging strategy, connector system and finished-pack dimensions.

Portable Inspection & Imaging EquipmentTHOR-125585 can be considered for portable inspection cameras and imaging devices that require extended runtime within a relatively compact high-capacity battery envelope. Validate continuous and peak load, thermal behavior and mechanical support for the finished pack.

Industrial Backup & Buffer Power ModulesThe 8500mAh cell can also serve as a candidate platform for custom backup or buffer-power modules where compact stored energy is required. Pack voltage architecture, PCM/BMS, current path, charging method, connector and mechanical layout must be engineered at system level.