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7.4 V 800mAh Lithium Ion Battery Pack 703040-2S

Name: 7.4 V 800 mAh Lithium Ion Battery Pack 703040-2S
Brand: Ufine
SKU: UFX0132-02
Price: 1.25 USD
Availability: InStock
Rating: 4.8 (4 reviews)

Model: 703040-2S SKU: UFX0132-02

7.4V 800mAh polymer Li-ion battery pack (703040-2S) with 5.92Wh capacity. Compact, reliable, and customizable by Ufine Battery for diverse device applications.

703040 size – slim and lightweight for easy device integration.
7.4V output – stable voltage for electronics requiring higher power.
800mAh capacity – delivers dependable runtime for portable devices.
Built-in PCM – safeguards against overcharge, over-discharge, and short circuit.

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Product Details
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FAQs

7.4V 800mAh 703040-2S LiPo Battery Pack for Compact Devices

The Ufine 703040-2S lithium polymer battery pack provides a nominal voltage of 7.4V, a capacity of 800mAh, and 5.92Wh of energy. Its 2S1P configuration is designed for compact devices that need a higher voltage than a single 3.7V cell.

Ufine 703040-2S 7.4V 800mAh lithium polymer battery pack

Performance Characteristics of 7.4V 800mAh 703040-2S Battery Pack

The 703040-2S pack has defined current, cycle-life, temperature, and storage limits. These values help engineers match the battery to the device power system.

Discharge Rate
Cycle Life
Temperature Range
Storage Conditions

Discharge characteristics of 7.4V 800mAh 703040-2S battery pack

Defined Charge and Discharge Current

The 703040-2S pack has a standard charge and discharge current of 160mA. The maximum charge and discharge current is 800mA.

Standard discharge current: 160mA
Maximum discharge current: 800mA
Pack discharge cut-off voltage: 5.5V

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Cycle life of 7.4V 800mAh 703040-2S battery pack

Cycle Life and Capacity Retention

The 703040-2S battery is designed for repeated charging and discharging. Its specified capacity retention remains ≥80% after 500 cycles.

After 100 cycles: ≥92% capacity retention
After 300 cycles: ≥88% capacity retention
After 500 cycles: ≥80% capacity retention

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Operating temperature range of 7.4V 800mAh 703040-2S battery pack

Defined Operating Temperature Range

Charging and discharging have different temperature limits. Therefore, both ranges should be checked before the pack is integrated into a device.

Charging temperature: 0°C to 45°C
Discharging temperature: -20°C to 60°C
Applications outside these limits require separate engineering evaluation

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Storage conditions of 7.4V 800mAh 703040-2S battery pack

Storage Temperature and Duration

The recommended storage temperature depends on how long the battery will be stored. For longer storage periods, a lower temperature range is specified.

Up to 1 year: -20°C to +30°C
Up to 3 months: -20°C to +45°C
Up to 1 month: -20°C to +60°C

Learn More About Battery Storage 

703040-2S Battery Pack Engineering Highlights

The 703040-2S uses two cells in series to provide a 7.4V nominal output. It combines 800mAh capacity with defined charging, discharging, and protection limits.

Designed for 7.4V Two-Cell Device Integration

The 2S1P design provides twice the nominal voltage of a single 3.7V cell while keeping the capacity at 800mAh. Therefore, it is suitable for compact devices designed around a 7.4V battery system.

Nominal voltage and capacity: 7.4V / 800mAh
Nominal energy: 5.92Wh
Configuration: 2S1P
Approx. weight: 30.8g
Standard charge/discharge current: 160mA
Maximum charge/discharge current: 800mA
Internal resistance: <200mΩ
Maximum pack charge voltage: 8.4V
PCM protection: Yes

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703040-2S 7.4V 800mAh battery pack engineering highlights

Manufacturing Controls for the 703040-2S Battery Pack

The 703040-2S pack follows defined production and inspection controls. These checks cover pack assembly, incoming materials, manufacturing processes, and electrical performance.

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703040-2S lithium polymer battery pack assembly and structural control

Pack Assembly Control

The two-cell 2S1P assembly is checked for alignment, pack consistency, and secure component placement.

These checks help the finished pack fit more consistently into the intended device enclosure.

Incoming Quality Control

Cells, wires, protection components, and other pack materials are checked before assembly.

This helps reduce variation between production batches.

Process Control

Production checkpoints monitor pack assembly, voltage, internal resistance, and connection consistency.

As a result, process issues can be identified before final inspection.

703040-2S battery pack electrical and PCM protection verification

Electrical Verification

Finished packs are checked for voltage, internal resistance, capacity, and PCM operation.

The standard PCM provides overcharge, overdischarge, overcurrent, and short-circuit protection.

Standard 703040-2S Pack vs Custom Options

The standard pack covers common 7.4V requirements. However, selected pack components can be adapted for OEM device integration.

Standard 703040-2S

7.4V nominal voltage
800mAh nominal capacity
5.92Wh nominal energy
2S1P configuration
Approx. weight: 30.8g
160mA standard charge/discharge current
800mA maximum charge/discharge current
8.4V maximum charge voltage
5.5V discharge cut-off voltage
Charging temperature: 0°C to 45°C
Discharging temperature: -20°C to 60°C
PCM protection included
NTC: No

Custom Options

Connector type and mating interface
Wire length, gauge, and polarity
PCM and protection-circuit configuration
Optional NTC or temperature sensing
Pack layout according to device space
Other requirements subject to engineering evaluation

703040-2S Battery Pack Customization

Ufine can adjust selected pack components to match the device interface, electrical design, installation space, and protection requirements.

What

Connector Options: JST / Molex / Hirose / TE / etc.
Custom Wire Length, Gauge & Polarity
PCM and Protection Circuit Configuration
Optional NTC / Temperature Sensing
Pack Layout or Other Changes Subject to Engineering Evaluation

How

01

Confirm available battery space and pack layout
02

Define voltage, current, runtime, and charging needs
03

Confirm operating temperature and protection requirements
04

Match connector, wire length, gauge, and polarity
05

Confirm PCM, NTC, and final pack configuration

Compare 7.4V Battery Packs by Size and Capacity

Compare related 7.4V lithium battery packs with different capacities and pack sizes. These options help engineers choose a battery that better matches the available space and runtime needs.

Voltage	Model	Capacity	Size (mm)	Product Highlights
7.4V	182533-2S	700mAh	18 × 25 × 35	Compact Pack, Smaller Capacity
7.4V	182346-2S	1100mAh	18 × 23 × 49	Higher Capacity, Longer Runtime

Battery Specification

1. Mechanical Characteristics

Cell 703040-2S PCM Yes

NTC No Weight appr. 30.8g

Configuration 2S1P

2. Electrical Specification

Capacity	800mAh	Nominal Voltage	7.4V
Energy	5.92Wh	Internal Resistance	less than 200mΩ
Max. Charge Voltage	8.4V	Discharge Cut Off	5.5V
Max. Charge Current	800mA	Max. Discharge Current	800mA
Standard Charge Current	160mA	Standard Discharge Current	160mA
Charging Temperature	0℃ to 45℃	Discharging Temperature	-20℃ to 60℃
Storage Temp.Range	1 year at -20℃ to +30℃ 3 mos. at -20℃ to +45℃ 1 mo. at -20℃ to +60℃	Cycle life	100 cycles ≥92% 300 cycles ≥88% 500 cycles ≥80%

3. Cell protection

Overcharge Detection	4.28V ±50mV (80 to 200msec delay, release 4.08V ±50mV)	Overdischarge Detection	2.4V ±100mV (40 to 120msec. delay, release 3.0V ±100mV)
Overcurrent Detection	2.5A to 4.5A (5 to 10msec. delay)	Short protection	Yes

Download Product Datasheet

The 7.4V 800mAh Li-ion battery pack (703040-2S) from Ufine Battery is widely used in compact drones, portable medical instruments, and handheld electronics. Its polymer construction provides consistent performance while keeping devices lightweight and efficient.

Read on to explore the applications, usage tips, and industry insights for this 7.4V 800mAh LiPo battery, and learn how it can improve device reliability and operational efficiency.

Part 1. Applications of the 7.4V 800mAh Li-ion battery

The polymer Li-ion battery 7.4V 800mAh 5.92Wh is not just a power source; it enables practical functionality across various fields:

Drones and UAVs – Supports stable flight and extended mission duration for hobbyists and professionals alike.
Medical devices – Keeps portable monitors and diagnostic tools operational during critical procedures.
Industrial scanners and handheld terminals – Ensures continuous data capture and communication without frequent charging interruptions.
IoT and wearable devices – Fits compact form factors while providing reliable power for sensors and controllers.

Need help selecting the right battery for your device? Consult Ufine Battery for tailored 7.4V battery solutions.

Part 2. How to maintain your 7.4V 800mAh LiPo battery

Proper care of your 7.4V 800mAh LiPo battery ensures optimal performance and longevity:

Store in a cool, dry place when not in use to preserve capacity and prevent degradation.
Avoid deep discharge – recharge before the battery is fully depleted to maintain health.
Use recommended chargers and follow device guidelines to reduce stress on the battery.
Regularly inspect connectors and wiring for wear or damage to ensure consistent operation.

Part 3. Environmental considerations for polymer Li-ion battery 7.4V 800mAh 5.92Wh

The polymer Li-ion battery 7.4V 800mAh 5.92Wh is designed with sustainability in mind:

Energy-efficient – Low self-discharge means less frequent charging and lower overall energy use.
Recyclable components – Ufine encourages proper recycling to reduce environmental impact.
Durable design – Long lifespan reduces the need for frequent replacements, minimizing waste.

Part 4. Insights from industry users of lipo battery 7.4 V 800mAh

Many professionals rely on the lipo battery 7.4 V 800mAh for mission-critical operations:

Drone pilots report extended flight times and stable control, even under variable load conditions.
Medical device operators value consistent voltage that ensures accurate measurements and uninterrupted monitoring.
Field technicians appreciate the lightweight form factor for portable scanners and handheld tools.

Part 5. Customization and special projects with Ufine 7.4V battery

Ufine Battery offers flexible options for the 7.4V battery pack to meet specialized project needs:

Adaptable form factors – From compact housings to custom enclosures.
Voltage and capacity tuning – Align power output precisely with device requirements.
Connector customization – Simplifies integration into unique systems or prototypes.
Environmental adaptations – High- and low-temperature variants for extreme conditions.

Start your custom project today by requesting a consultation for your 7.4V 800mAh Li-ion battery.

FAQs

What is the difference between this 7.4V 800mAh Li-ion battery and a single-cell 3.7V battery?

A 7.4V battery like the 703040-2S pack consists of two 3.7V cells connected in series, providing double the voltage compared to a single 3.7V cell. This makes it suitable for devices requiring higher working voltage and more stable performance.
Can this 7.4V 800mAh battery be used as a replacement for other 7.4V Li-ion or LiPo batteries?

Yes, as long as the voltage (7.4V) and dimensions (703040) match your device requirements. It can replace other 7.4V Li-ion or LiPo batteries with the same size and connector type.
How long does it take to fully charge this 800mAh 7.4V Li-ion battery?

With a standard charger, it typically takes 2–3 hours to reach full charge. Fast charging is possible with compatible chargers, but always use Ufine-recommended solutions to ensure battery life and safety.
What devices are best suited for this polymer Li-ion battery 7.4V 800mAh 5.92Wh?

It’s ideal for drones, handheld medical devices, small robotics, scanners, and wireless tools where compact size and reliable voltage are essential.
Can this 7.4V battery be customized for specific applications?

Yes, Ufine provides OEM/ODM customization, including connector options, wire length, PCM settings, and pack structure to match your device design.

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