7.4V Lithium-Ion Battery Pack
-Portable and Low- to Medium-Power Devices
A 7.4V lithium battery is a common rechargeable voltage platform based on a 2S configuration, consisting of two 3.7V lithium-ion cells connected in series. LARGE provides lightweight, high energy density, and expandable capacity solutions. We support multiple configurations (2S1P / 2S2P / 2S4P), compact structural design, and connector customization ó enabling improved runtime within limited device space.
Platform Features
- Stable voltage output for low- to medium-power devices
- Compact structure for easy integration
- Parallel expansion available for extended runtime
Technical Specifications
| Nominal Voltage | 7.4V |
| Capacity Range | 1Ah – 20Ah |
| Charge Voltage | 8.4V |
| Discharge Cut-off | 5.0-5.5V |
| Cell Type | Cylindrical (18650 / 21700), Pouch |
| Discharge Rate | Standard (0.5-2C) / High power (3-10C+) |
Note: Specifications can be customized according to application requirements.
7.4V Lithium-Ion Battery Pack
Selected customization examples – upgradeable and reconfigurable per project requirements.
Applications of 7.4V Lithium Battery
Portable & Industrial Detection Devices
7.4V(2S system) batteries provide stable output
while maintaining structural flexibility for portable equipment.
Industrial & Testing Equipment
Handheld testers.Field analysis devices
Stable output for complex environments
Security&Communication
Outdoorinspection equipment . Portable communication terminalsWide temperature design for long-duration operation
Medical Devices
Infusion pumps . Compact medicalterminalsReliableand compliant with ISO13485 requirements
Looking for a Battery Solution for Your Equipment?
We provide professional customized support based on
your application requirements.
your application requirements.
7.4V Lithium Battery Pack Design Considerations
A 7.4V lithium battery pack typically adopts a 2S structure, providing stable voltage output in a compact format — widely used in handheld and portable devices.
Capacity can be increased through parallel configurations such as 2S1P, 2S2P, or 2S4P to meet different runtime requirements.
For portable devices, battery size, weight, and internal wiring layout significantly impact overall system integration. Proper capacity matching helps optimize runtime while maintaining device compactness.
Through structural optimization, a 7.4V lithium battery pack can deliver reliable power while preserving device portability.
Related Lithium Battery Voltages
Frequently Asked Questions (FAQ)
Are you a manufacturer?
Yes, we are a China-based lithium battery manufacturer specializing in 2S battery systems.
Do you support small-batch customization?
Yes. We support pilot production and mass orders, with customization available for capacity, structure, and BMS functions.
Can 7.4V lithium batteries be customized?
Yes. Capacity, size, discharge rate, BMS functions, and connectors can all be customized.
What devices commonly use 7.4V lithium batteries?
Handheld terminals, portable medical devices, industrial testing equipment, and small UAV systems.
What is the cycle life of a 7.4V battery?
Typically 500–1000 charge/discharge cycles under normal operating conditions.
What is the difference between 7.4V and 11.1V batteries?
7.4V uses a 2S configuration; 11.1V uses a 3S configuration and is suitable for higher-power devices.
Can a 7.4V battery support high-current discharge?
Yes. With high-rate cells and proper design, it can support robotics and power tool applications.
What should I do if a 7.4V battery does not charge?
Possible causes include:
·Protection circuit activated
·Incompatible charger
·Cell over-discharge damage
Get Your Custom 7.4 V Lithium Battery Solution
Looking for a stable and reliable battery solution?
We provide integrated support from engineering design to mass production.
We provide integrated support from engineering design to mass production.