18650-2S1P 7.2V 2000mAh Lithium Battery: A Compact and Efficient Power Solution

What Is 18650-2S1P? Understanding the Structure

The 18650-2S1P battery pack consists of two 18650 cylindrical lithium-ion cells connected in series (2S) with one parallel group (1P). It delivers a total voltage of 7.2V and a capacity of 2000mAh, combining high voltage output with a compact, lightweight design. This makes it ideal for applications where space is limited but stable voltage is required.

2S1P battery pack made from two 18650 cells, outputting 7.2V

Product Specifications and Technical Details

Here are the typical technical specifications of this battery model:

Cell Type: 18650 lithium-ion
Configuration: 2 Series 1 Parallel (2S1P)
Rated Voltage: 7.2V
Nominal Capacity: 2000mAh
Total Energy: 14.4Wh
Dimensions: Customizable
Protection Circuit: Built-in PCM for overcharge, over-discharge, and overcurrent protection
Charging Current: Standard 0.5C, Max 1C
Operating Temperature: -20°C to +60°C

Category	Parameter Name	Value
Basic	Configuration	2S1P
	Rated Voltage	7.4V
	Typical Capacities	2000mAh, 2200mAh, 2500mAh…
	Dimensions	Approx. 21mm × 37mm × 68mm
	Internal Resistance	≤250mΩ (down to 53mΩ optional)
	Weight	~90–100g
Charge/Discharge	Max Charge Voltage	8.4V
	Standard Charge Current	0.2C
	Max Charge Current	0.5C–1C (up to 2.5A optional)
	Continuous Discharge Current	0.2C
	Max Continuous Discharge	1C–2C
	Cut-off Voltage	Typically 5–5.6V
	Temperature Range	Charge: 0–45°C; Discharge: -20–60°C
Storage	Long-term/Short-term Storage	-20–35°C / up to 50°C
Protection	Overcharge Protection	4.25±0.025V (per cell)
	Over-discharge Protection	3.0±0.1V (or 2.4±0.06V)
	Overcurrent Protection	5–10A
	Short Circuit Protection	Yes

Application Scenarios: Where Is It Used?

With its compact size and high voltage, this battery is ideal for:

Small medical devices (e.g., glucometers, automatic injectors)
Wireless transmission devices (e.g., RF modules, remote controls)
Handheld electronics (e.g., barcode scanners, LED flashlights)
Industrial sensors and smart security devices
Embedded systems with custom battery modules

Discover the versatile applications of 18650-2S1P lithium batteries across medical, industrial, and portable devices.

Why Choose a Custom 18650-2S1P Battery?

Apsenx offers customized 18650-2S1P battery packs tailored to your device’s structure, current needs, and terminal configurations:

Choose from Samsung, LG, or A-grade local cells
Customize wire length, terminals, and protection boards
Full certification including UN38.3, MSDS
Fast prototyping and stable lead times

Custom battery solutions provide better compatibility, higher stability, and safer integration for your application.

Learn how Apsenx customizes 18650-2S1P batteries to fit your device’s power, structure, and certification requirements.

Buying Guide: What to Look for When Selecting a 7.2V Lithium Battery?

Key factors to consider when purchasing a 7.2V 2000mAh lithium battery:

A practical guide to choosing the right 7.2V lithium battery, covering performance, safety, and certification factors.

Reliable cell brand (A-grade preferred)
Complete protection circuit (PCM/BMS)
Compatibility with your device dimensions
Required certifications (UN38.3, CE, RoHS)
After-sales support and technical assistance

Apsenx provides global customers with technical support and fast quotation services to help select the most cost-effective and reliable battery solution.