7.4v Lithium Battery Pack
Jetray is a professional 7.4V lithium battery pack manufacturer in China.
We design and produce reliable rechargeable 7.4V battery packs with capacities from 5Ah to 40Ah, available in PVC, plastic, or metal housings.
Our batteries deliver stable performance, long cycle life, and strong safety, making them ideal for RV systems, solar lights, portable tools, and industrial devices.
Each pack is tested and certified under UN38.3, IEC, and MSDS standards to ensure global safety compliance.
We also provide OEM & ODM customization for connectors, casings, and labels to match your project needs.
If you’re looking for durable and cost-effective 7.4V lithium battery packs, Jetray offers high-quality solutions at factory prices.
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Battery Model: Panasonic INR18650, 2S8P
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Nominal Voltage: 7.2V
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Typical Capacity: 17.6Ah
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Battery Model: Panasonic INR18650BD, 2S3P
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Nominal Voltage: 7.2V
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Typical Capacity: 9.6Ah
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Battery Model: Panasonic INR18650BD, 2S2P
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Nominal Voltage: 7.2V
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Typical Capacity: 6.4Ah
- Battery Model: INR18650 2600mAh, 2S1P
- Nominal Voltage: 7.2V
- Typical Capacity: 2.6Ah
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Battery Model: Samsung INR18650-35E, 2S1P
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Nominal Voltage: 7.2V
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Typical Capacity: 3.5Ah
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What Is a 7.4V Lithium Battery Pack
The pack uses a 2S structure — two lithium cells connected in series.
Nominal voltage is 7.4V, full charge voltage is 8.4V, and discharge cut-off is around 5.0V.
It offers higher power than single 3.6V batteries but remains safe and efficient.
Common cell types include 18650, 21700, and pouch cells.
Main Features
7.4V lithium packs have high energy density and long cycle life.
They work well between -20°C and +60°C.
A built-in protection board (BMS) prevents overcharge, overdischarge, and short circuits.
Capacities range from 2000mAh to over 20000mAh, depending on configuration.
You can choose 2S1P, 2S2P, or 2S3P setups based on your needs.
Advantages
This battery type offers strong power with low weight.
It charges quickly, lasts long, and keeps voltage stable.
Low self-discharge means it stays charged even during storage.
It’s safe, efficient, and widely used in modern electronic products.
Applications
7.4V lithium battery packs are used in many fields:
medical devices, security systems, smart meters, industrial tools, portable printers, GPS trackers, and solar lighting.
They are ideal for products that need steady energy in a small size.
Many IoT and handheld devices also rely on 7.4V packs for consistent power.
7.4V vs 3.6V Lithium Battery Pack
The difference comes from cell configuration.
A 3.6V pack has one cell (1S).
A 7.4V pack has two cells in series (2S).
This doubles the voltage and increases power output.
3.6V batteries are used for low-power products like sensors and small electronics.
7.4V batteries suit higher-power devices such as cameras, robots, and medical tools.
If your device needs more power and longer runtime, 7.4V is the better choice.
Customization Options
We offer full OEM and ODM customization.
You can select cell brands like Panasonic, Samsung, LG, or EVE.
Housing options include PVC wrap, plastic, or metal case.
Wire length, connectors, and BMS can all be customized.
Our engineering team designs packs that match your exact requirements.
Safety and Quality
Each pack is tested before shipping to ensure performance and safety.
All models meet UN38.3, IEC62133, and MSDS standards.
This guarantees safe operation and international transport approval.
- Email：sale1@jetray.cn
- Mobile：+86 13924645656
- WhatsApp：+86 13924645656
- Address：Songgang Town, Bao'an District, Shenzhen City
