THOR POWER · FACTORY-DIRECT

3.7V Lithium Polymer Batteries — 2,000–⁠4,999mAh

Factory-direct 3.7V LiPo batteries from 2,000mAh to 4,999mAh for portable systems that balance longer runtime, mixed system load and enclosure volume, with customizable sizes, connectors and PCM/NTC protection.

Get a Battery Solution Browse Available Models

Available Models

THOR-545163

3.7V · 2,000 mAh LiPo Battery

Nominal cell size: 5.4 × 51 × 63 mm

THOR-525085

3.7V · 2,000 mAh LiPo Battery

Nominal cell size: 5.2 × 50 × 85 mm

THOR-455572

3.7V · 2,000 mAh LiPo Battery

Nominal cell size: 4.5 × 55 × 72 mm

THOR-455272

3.7V · 2,000 mAh LiPo Battery

Nominal cell size: 4.5 × 52 × 72 mm

THOR-406076

3.7V · 2,000 mAh LiPo Battery

Nominal cell size: 4 × 60 × 76 mm

THOR-405675

3.7V · 2,000 mAh LiPo Battery

Nominal cell size: 4 × 56 × 75 mm

THOR-356085

3.7V · 2,000 mAh LiPo Battery

Nominal cell size: 3.5 × 60 × 85 mm

THOR-104245

3.7V · 2,000 mAh LiPo Battery

Nominal cell size: 10 × 42 × 45 mm

THOR-103750

3.7V · 2,000 mAh LiPo Battery

Nominal cell size: 10 × 37 × 50 mm

THOR-103745

3.7V · 2,000 mAh LiPo Battery

Nominal cell size: 10 × 37 × 45 mm

LiPo

THOR-124040

3.7V · 2,000 mAh LiPo Battery

Nominal cell size: 12 × 40 × 40 mm

LiPo

THOR-453998

3.7V · 2,000 mAh LiPo Battery

Nominal cell size: 4.5 × 39 × 98 mm

THOR-654065

3.7V · 2,000 mAh LiPo Battery

Nominal cell size: 6.5 × 40 × 65 mm

LiPo

THOR-123146

3.7V · 2,000 mAh LiPo Battery

Nominal cell size: 12 × 31 × 46 mm

LiPo

THOR-104547

3.7V · 2,000 mAh LiPo Battery

Nominal cell size: 10 × 45 × 47 mm

LiPo

THOR-654267

3.7V · 2,000 mAh LiPo Battery

Nominal cell size: 6.5 × 42 × 67 mm

LiPo

THOR-634169

3.7V · 2,000 mAh LiPo Battery

Nominal cell size: 6.3 × 41 × 69 mm

LiPo

THOR-803273

3.7V · 2,000 mAh LiPo Battery

Nominal cell size: 8 × 32 × 73 mm

LiPo

THOR-605060

3.7V · 2,000 mAh LiPo Battery

Nominal cell size: 6 × 50 × 60 mm

LiPo

THOR-604070

3.7V · 2,000 mAh LiPo Battery

Nominal cell size: 6 × 40 × 70 mm

LiPo

THOR-634165

3.7V · 2,000 mAh LiPo Battery

Nominal cell size: 6.3 × 41 × 65 mm

THOR-103450

3.7V · 2,000 mAh LiPo Battery

Nominal cell size: 10 × 34 × 50 mm

THOR-903462

3.7V · 2,200 mAh LiPo Battery

Nominal cell size: 9 × 34 × 62 mm

THOR-604368

3.7V · 2,200 mAh LiPo Battery

Nominal cell size: 6 × 43 × 68 mm

THOR-555462

3.7V · 2,200 mAh LiPo Battery

Nominal cell size: 5.5 × 54 × 62 mm

LiPo

THOR-5027150

3.7V · 2,200 mAh LiPo Battery

Nominal cell size: 5 × 27 × 150 mm

THOR-964149

3.7V · 2,300 mAh LiPo Battery

Nominal cell size: 9.6 × 41 × 49 mm

THOR-924260

3.7V · 2,300 mAh LiPo Battery

Nominal cell size: 9.2 × 42 × 60 mm

LiPo

THOR-425090

3.7V · 2,300 mAh LiPo Battery

Nominal cell size: 4.2 × 50 × 90 mm

THOR-804060

3.7V · 2,300 mAh LiPo Battery

Nominal cell size: 8 × 40 × 60 mm

THOR-805050

3.7V · 2,400 mAh LiPo Battery

Nominal cell size: 8 × 50 × 50 mm

THOR-704865

3.7V · 2,400 mAh LiPo Battery

Nominal cell size: 7 × 48 × 65 mm

LiPo

THOR-506080

3.7V · 2,400 mAh LiPo Battery

Nominal cell size: 5 × 60 × 80 mm

THOR-555075

3.7V · 2,500 mAh LiPo Battery

Nominal cell size: 5.5 × 50 × 75 mm

THOR-823282

3.7V · 2,500 mAh LiPo Battery

Nominal cell size: 8.2 × 32 × 82 mm

THOR-724957

3.7V · 2,500 mAh LiPo Battery

Nominal cell size: 7.2 × 49 × 57 mm

THOR-653496

3.7V · 2,500 mAh LiPo Battery

Nominal cell size: 6.5 × 34 × 96 mm

THOR-556065

3.7V · 2,500 mAh LiPo Battery

Nominal cell size: 5.5 × 60 × 65 mm

THOR-485573

3.7V · 2,500 mAh LiPo Battery

Nominal cell size: 4.8 × 55 × 73 mm

THOR-366890

3.7V · 2,500 mAh LiPo Battery

Nominal cell size: 3.6 × 68 × 90 mm

THOR-375678

3.7V · 2,500 mAh LiPo Battery

Nominal cell size: 3.7 × 56 × 78 mm

THOR-385677

3.7V · 2,500 mAh LiPo Battery

Nominal cell size: 3.8 × 56 × 77 mm

LiPo

THOR-123252

3.7V · 2,500 mAh LiPo Battery

Nominal cell size: 12 × 32 × 52 mm

LiPo

THOR-903659

3.7V · 2,500 mAh LiPo Battery

Nominal cell size: 9 × 36 × 59 mm

LiPo

THOR-954058

3.7V · 2,500 mAh LiPo Battery

Nominal cell size: 9.5 × 40 × 58 mm

LiPo

THOR-163543

3.7V · 2,500 mAh LiPo Battery

Nominal cell size: 16 × 35 × 43 mm

LiPo

THOR-804258

3.7V · 2,500 mAh LiPo Battery

Nominal cell size: 8 × 42 × 58 mm

THOR-104050

3.7V · 2,500 mAh LiPo Battery

Nominal cell size: 10 × 40 × 50 mm

LiPo

THOR-803280

3.7V · 2,500 mAh LiPo Battery

Nominal cell size: 8 × 32 × 80 mm

LiPo

THOR-903759

3.7V · 2,500 mAh LiPo Battery

Nominal cell size: 9 × 37 × 59 mm

THOR-505573

3.7V · 2,500 mAh LiPo Battery

Nominal cell size: 5 × 55 × 73 mm

THOR-752886

3.7V · 2,600 mAh LiPo Battery

Nominal cell size: 7.5 × 28 × 86 mm

THOR-604380

3.7V · 2,600 mAh LiPo Battery

Nominal cell size: 6 × 43 × 80 mm

LiPo

THOR-114545

3.7V · 2,600 mAh LiPo Battery

Nominal cell size: 11 × 45 × 45 mm

LiPo

THOR-655060

3.7V · 2,700 mAh LiPo Battery

Nominal cell size: 6.5 × 50 × 60 mm

THOR-805255

3.7V · 2,800 mAh LiPo Battery

Nominal cell size: 8 × 52 × 55 mm

THOR-623360

3.7V · 2,800 mAh LiPo Battery

Nominal cell size: 6.2 × 33 × 60 mm

THOR-575166

3.7V · 2,800 mAh LiPo Battery

Nominal cell size: 5.7 × 51 × 66 mm

THOR-407087

3.7V · 2,800 mAh LiPo Battery

Nominal cell size: 4 × 70 × 87 mm

THOR-134049

3.7V · 2,800 mAh LiPo Battery

Nominal cell size: 13 × 40 × 49 mm

THOR-123464

3.7V · 2,800 mAh LiPo Battery

Nominal cell size: 12 × 34 × 64 mm

LiPo

THOR-104060

3.7V · 2,800 mAh LiPo Battery

Nominal cell size: 10 × 40 × 60 mm

THOR-6034106

3.7V · 2,850 mAh LiPo Battery

Nominal cell size: 6 × 34 × 106 mm

THOR-103665

3.7V · 3,000 mAh LiPo Battery

Nominal cell size: 10 × 36 × 65 mm

THOR-904860

3.7V · 3,000 mAh LiPo Battery

Nominal cell size: 9 × 48 × 60 mm

THOR-804864

3.7V · 3,000 mAh LiPo Battery

Nominal cell size: 8 × 48 × 64 mm

THOR-755068

3.7V · 3,000 mAh LiPo Battery

Nominal cell size: 7.5 × 50 × 68 mm

THOR-704070

3.7V · 3,000 mAh LiPo Battery

Nominal cell size: 7 × 40 × 70 mm

THOR-655080

3.7V · 3,000 mAh LiPo Battery

Nominal cell size: 6.5 × 50 × 80 mm

THOR-595085

3.7V · 3,000 mAh LiPo Battery

Nominal cell size: 5.9 × 50 × 85 mm

THOR-407090

3.7V · 3,000 mAh LiPo Battery

Nominal cell size: 4 × 70 × 90 mm

THOR-475979

3.7V · 3,000 mAh LiPo Battery

Nominal cell size: 4.7 × 59 × 79 mm

THOR-105151

3.7V · 3,000 mAh LiPo Battery

Nominal cell size: 10 × 51 × 51 mm

THOR-104065

3.7V · 3,000 mAh LiPo Battery

Nominal cell size: 10 × 40 × 65 mm

LiPo

THOR-123065

3.7V · 3,000 mAh LiPo Battery

Nominal cell size: 12 × 30 × 65 mm

LiPo

THOR-104848

3.7V · 3,000 mAh LiPo Battery

Nominal cell size: 10 × 48 × 48 mm

THOR-605080

3.7V · 3,000 mAh LiPo Battery

Nominal cell size: 6 × 50 × 80 mm

LiPo

THOR-506090

3.7V · 3,000 mAh LiPo Battery

Nominal cell size: 5 × 60 × 90 mm

LiPo

THOR-705070

3.7V · 3,000 mAh LiPo Battery

Nominal cell size: 7 × 50 × 70 mm

LiPo

THOR-605473

3.7V · 3,000 mAh LiPo Battery

Nominal cell size: 6 × 54 × 73 mm

LiPo

THOR-113760

3.7V · 3,000 mAh LiPo Battery

Nominal cell size: 11 × 37 × 60 mm

LiPo

THOR-105050

3.7V · 3,000 mAh LiPo Battery

Nominal cell size: 10 × 50 × 50 mm

THOR-655084

3.7V · 3,200 mAh LiPo Battery

Nominal cell size: 6.5 × 50 × 84 mm

THOR-367599

3.7V · 3,200 mAh LiPo Battery

Nominal cell size: 3.6 × 75 × 99 mm

LiPo

THOR-387090

3.7V · 3,200 mAh LiPo Battery

Nominal cell size: 3.8 × 70 × 90 mm

THOR-775564

3.7V · 3,300 mAh LiPo Battery

Nominal cell size: 7.7 × 55 × 64 mm

THOR-3048128

3.7V · 3,400 mAh LiPo Battery

Nominal cell size: 3 × 48 × 128 mm

THOR-4056127

3.7V · 3,500 mAh LiPo Battery

Nominal cell size: 4 × 56 × 127 mm

THOR-105060

3.7V · 3,500 mAh LiPo Battery

Nominal cell size: 10 × 50 × 60 mm

LiPo

THOR-804585

3.7V · 3,500 mAh LiPo Battery

Nominal cell size: 8 × 45 × 85 mm

LiPo

THOR-114060

3.7V · 3,500 mAh LiPo Battery

Nominal cell size: 11 × 40 × 60 mm

LiPo

THOR-134055

3.7V · 3,500 mAh LiPo Battery

Nominal cell size: 13 × 40 × 55 mm

THOR-124060

3.7V · 3,600 mAh LiPo Battery

Nominal cell size: 12 × 40 × 60 mm

THOR-6042123

3.7V · 3,800 mAh LiPo Battery

Nominal cell size: 6 × 42 × 123 mm

THOR-955070

3.7V · 3,800 mAh LiPo Battery

Nominal cell size: 9.5 × 50 × 70 mm

LiPo

THOR-705587

3.7V · 3,800 mAh LiPo Battery

Nominal cell size: 7 × 55 × 87 mm

THOR-6050100

3.7V · 4,000 mAh LiPo Battery

Nominal cell size: 6 × 50 × 100 mm

THOR-3377128

3.7V · 4,000 mAh LiPo Battery

Nominal cell size: 3.3 × 77 × 128 mm

THOR-794399

3.7V · 4,000 mAh LiPo Battery

Nominal cell size: 7.9 × 43 × 99 mm

THOR-125050

3.7V · 4,000 mAh LiPo Battery

Nominal cell size: 12 × 50 × 50 mm

LiPo

THOR-104867

3.7V · 4,000 mAh LiPo Battery

Nominal cell size: 10 × 48 × 67 mm

LiPo

THOR-805080

3.7V · 4,000 mAh LiPo Battery

Nominal cell size: 8 × 50 × 80 mm

LiPo

THOR-105063

3.7V · 4,000 mAh LiPo Battery

Nominal cell size: 10 × 50 × 63 mm

LiPo

THOR-124065

3.7V · 4,000 mAh LiPo Battery

Nominal cell size: 12 × 40 × 65 mm

LiPo

THOR-105065

3.7V · 4,000 mAh LiPo Battery

Nominal cell size: 10 × 50 × 65 mm

THOR-606090

3.7V · 4,000 mAh LiPo Battery

Nominal cell size: 6 × 60 × 90 mm

THOR-125054

3.7V · 4,200 mAh LiPo Battery

Nominal cell size: 12 × 50 × 54 mm

THOR-4085106

3.7V · 4,200 mAh LiPo Battery

Nominal cell size: 4 × 85 × 106 mm

THOR-955178

3.7V · 4,500 mAh LiPo Battery

Nominal cell size: 9.5 × 51 × 78 mm

THOR-805082

3.7V · 4,500 mAh LiPo Battery

Nominal cell size: 8 × 50 × 82 mm

THOR-134073

3.7V · 4,500 mAh LiPo Battery

Nominal cell size: 13 × 40 × 73 mm

LiPo

THOR-104964

3.7V · 4,950 mAh LiPo Battery

Nominal cell size: 10 × 49 × 64 mm

Overview

A high-capacity 3.7V LiPo battery (2,000–4,999mAh) is where capacity becomes a system-level balance rather than a single number. In the 2Ah–5Ah class you are trading longer runtime against mixed system loads — display, processor, wireless and sensors running together — and against the mechanical volume the finished pack needs. Compare geometry, continuous and peak current, connector and PCM, charging time and finished-pack dimensions together, because at this size the wrong balance shows up as voltage sag, heat or a pack that no longer fits.

When Capacity Becomes a System-Level Load Decision

Above roughly 2Ah, the capacity number alone tells you little without the rest of the system picture:

Average and peak current — a larger cell does not guarantee the peak current your device draws; validate both continuous and peak load for the specific model.
Duty cycle and mixed load — display, processor, wireless and sensor activity combine differently in every product, so measure the real operating profile.
Finished-pack volume and charging — more capacity means a larger cell and longer charge time; confirm both the assembled envelope and the charge design.

Where a listed 2Ah–5Ah model does not fit the mechanical or load profile, a custom LiPo solution can be reviewed against your system requirements.

Browse by Exact Capacity

Jump to a specific capacity in this range for models, dimensions and selection guidance.

2,000mAh 2,500mAh 3,000mAh 4,000mAh

← Need a smaller pack? Medium Capacity LiPo Batteries Need more capacity? Large Capacity LiPo Batteries →

All LiPo Battery Models

Common Device Contexts for 3.7V 2,000–4,999mAh LiPo Batteries

These are representative examples only. Final capacity selection depends on enclosure space, runtime target, continuous and peak load, and finished-pack configuration.

Portable Speakers

Extended playtime and stable output for portable speakers.

Tablets & E-Readers

Thin, high-energy cells for tablets and reading devices.

Power Banks

High-capacity cells for portable charging products.

Medical Equipment

Portable battery options for diagnostic and monitoring equipment, subject to project-specific electrical, mechanical and qualification requirements.

Portable Imaging & Inspection Devices

Longer-runtime power for portable inspection cameras, thermal imaging devices and other display-and-processing equipment. Final selection depends on enclosure space and continuous and peak load requirements.

Handheld Terminals

Reliable power for scanners, POS and field devices.

Building something specific? Small Electronic Device Batteries·How custom battery projects work·Production process

Frequently Asked Questions

What does a LiPo battery model number such as 603040 mean?

A LiPo model number normally encodes the cell's thickness, width and length in millimetres — for example 603040 means roughly 6.0 mm thick, 30 mm wide, 40 mm long. It describes only the bare pouch cell, not the finished battery pack.

What is the difference between nominal cell size and finished battery size?

Nominal cell dimensions describe the bare pouch cell. The finished battery pack includes the PCM, tabs, insulation, wires and connector, which add to the overall envelope. Always design your device cavity around the finished-pack dimensions, not the nominal cell size.

How do I choose LiPo capacity for a fixed battery compartment?

Capacity is constrained by the available cell volume inside the compartment. Measure the maximum thickness, width and length, then compare finished-pack dimensions of models at each capacity that fits. The largest capacity that fits physically is usually the best starting point, subject to current and charging requirements.

What types of devices typically use high-capacity LiPo batteries?

Common applications include handheld barcode scanners and RFID readers, portable label printers and POS terminals, thermal imaging and inspection cameras, condition-monitoring units and industrial gas detectors, and field inspection terminals. These devices typically draw moderate to high current and require extended runtime. High-capacity cells also serve devices with moderate average current but high peak demands, such as equipment with thermal print heads or powerful wireless transmitters.

What continuous and peak current can high-capacity LiPo batteries deliver?

Current capability depends on the specific cell and PCM combination — not capacity alone. Higher capacities within this band generally support higher absolute current at the same C-rate. However, the allowable continuous and peak current must be confirmed against the specific cell and PCM specification for your application. Provide your continuous load, peak current and pulse duration for validation.

Should I consider voltage sag or thermal rise at high-capacity loads?

Yes. As device current increases, voltage sag under load reduces usable energy, and internal resistance generates heat. Devices drawing high continuous current should validate the voltage-sag profile and surface temperature under worst-case conditions. Provide your load profile for thermal and sag analysis.

LiPo battery C-rate comparison showing 1C 2C and 5C current for OEM pouch batteries

LiPo Battery C-Rate Guide: What 1C, 2C and 5C Really Mean for OEM Devices

Convert LiPo C-rate to amps, diagnose voltage sag and heat, and learn how cell, PCM, wires and connectors determine real OEM current...

September 6, 2026

LiPo pouch battery pack voltage sag during peak load in an OEM device

LiPo Battery Voltage Sag: Why Devices Shut Down Under Peak Load

Diagnose LiPo voltage sag under peak load. Separate cell, PCM, harness and device-side losses, then release the pack from measured voltage margin.

September 3, 2026

LiPo battery capacity sizing by usable energy, peak current and device cutoff

How Much LiPo Battery Capacity Does Your Device Need?

Calculate LiPo battery capacity from duty cycle, usable energy, peak current, cutoff voltage, temperature and end-of-life requirements for OEM devices.

August 22, 2026

View More Blogs →

For 2,000–4,999mAh systems where load profile and pack integration matter as much as capacity, review our Custom LiPo Battery Solutions for size, current, PCM, connector and assembly matching.

WhatsApp / Tel: +86 180 2916 9106

Email: sales@thorbattery.com

3.7V Lithium Polymer Batteries — 2,000–⁠4,999mAh

Available Models

Overview

When Capacity Becomes a System-Level Load Decision

Browse by Exact Capacity

You May Also Like

THOR-5451633.7V · 2,000 mAh LiPo BatteryNominal cell size: 5.4 × 51 × 63 mm

THOR-5554623.7V · 2,200 mAh LiPo BatteryNominal cell size: 5.5 × 54 × 62 mm

THOR-3856773.7V · 2,500 mAh LiPo BatteryNominal cell size: 3.8 × 56 × 77 mm

THOR-8048643.7V · 3,000 mAh LiPo BatteryNominal cell size: 8 × 48 × 64 mm

THOR-40561273.7V · 3,500 mAh LiPo BatteryNominal cell size: 4 × 56 × 127 mm

THOR-1340733.7V · 4,500 mAh LiPo BatteryNominal cell size: 13 × 40 × 73 mm

Common Device Contexts for 3.7V 2,000–4,999mAh LiPo Batteries

Frequently Asked Questions

Related Articles

LiPo Battery C-Rate Guide: What 1C, 2C and 5C Really Mean for OEM Devices

LiPo Battery Voltage Sag: Why Devices Shut Down Under Peak Load

How Much LiPo Battery Capacity Does Your Device Need?

WhatsApp / Tel: +86 180 2916 9106

Email: sales@thorbattery.com

3.7V Lithium Polymer Batteries — 2,000–⁠4,999mAh

Available Models

Overview

When Capacity Becomes a System-Level Load Decision

Browse by Exact Capacity

You May Also Like

THOR-5451633.7V · 2,000 mAh LiPo BatteryNominal cell size: 5.4 × 51 × 63 mm

THOR-5554623.7V · 2,200 mAh LiPo BatteryNominal cell size: 5.5 × 54 × 62 mm

THOR-3856773.7V · 2,500 mAh LiPo BatteryNominal cell size: 3.8 × 56 × 77 mm

THOR-8048643.7V · 3,000 mAh LiPo BatteryNominal cell size: 8 × 48 × 64 mm

THOR-40561273.7V · 3,500 mAh LiPo BatteryNominal cell size: 4 × 56 × 127 mm

THOR-1340733.7V · 4,500 mAh LiPo BatteryNominal cell size: 13 × 40 × 73 mm

Common Device Contexts for 3.7V 2,000–4,999mAh LiPo Batteries

Frequently Asked Questions

Related Articles

LiPo Battery C-Rate Guide: What 1C, 2C and 5C Really Mean for OEM Devices

LiPo Battery Voltage Sag: Why Devices Shut Down Under Peak Load

How Much LiPo Battery Capacity Does Your Device Need?

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