3.6V / 3.7V 21700 Battery Pack

CM Batteries can make unique 3.6V or 3.7V 21700 battery packs that can power your Wearable devices, IoT sensors, and Power tools.

Our battery packs are designed to meet the strict needs of many industries. They have high discharge rates (up to 10C) for high-power applications, stable performance across a wide temperature range of -20°C to 75°C, and can be fully customized in terms of voltage, capacity, and size so they fit perfectly into your equipment designs.

For higher voltage applications, our 7.4V, 11.1V, 14.8V, 22.2V, and 24V 21700 battery packs are designed for diverse uses. With integrated PCB protection, UL-listed circuits, and optional waterproof IP68 housing, our packs ensure safety, durability, and reliability. As a trusted 21700 battery pack manufacturer, we offer end-to-end support from battery design to the final delivery.

Custom 3.6V/3.7V 21700 Battery Pack Solutions

3.6V 5000mAh 21700 Li Ion Battery Pack

3.6V 5000mAh 21700 Li lon Battery Pack Continuous Discharge: 10A

Internal Impedance: ≤18mΩ

500 cycles with 80% depth of discharge (DOD)

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High Capacity 3.7V 20Ah 21700 Battery Pack

High capacity 3.7V 20Ah 21700 Battery Pack Combination: 1S4P,made of 4pcs 21700 li-ion rechargeable cells
Longer cycles: Cap(800th)/Cap(Av10)≥80%
Application for Medical devices

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3.2V LiFePO4 Battery Pack

7.4V 18650 Li-ion Battery Pack

3.7V 18650 Li-ion Battery Pack

3.7V 1S LiPo Battery

Can you use other cell models for battery pack design, or are you limited to 21700 cells?

Yes, we are not limited to 21700 cells. We can design battery packs using a variety of cell models, pls check this blog.

What is the operating temperature range of your 21700 battery packs?

Charging: 0°C to 50°C.

Discharging: -20°C to 75°C.

For extreme environments, we also offer low-temperature battery or high-temperature battery.

Do you provide waterproof or ruggedized battery packs?

Yes, we offer optional IP68-rated waterproof housing for applications requiring durability and protection against water, dust, and shock.

Do you provide certification for your 3.6V/3.7V 21700 battery packs?

Yes, our battery packs can be certified to meet industry standards such as UL, CE, RoHS, and UN38.3 for safe transportation.

How can I request a quote or more information?

You can contact us via email or our website to discuss your project requirements. Provide details such as voltage, capacity, dimensions, and application, and we’ll respond with a customized solution and quote.