UNIVERSAL COMPATIBILITY: Compatible with a wide range of devices including DIY electronics, Bluetooth devices, toys, solar lighting, and flashlights using 3.7V power and PH2.0/2P connector
SPECIFICATIONS: 3.7V rechargeable lithium-ion battery, 2600mAh capacity, 9.62Wh output; Size: 2.6 x 0.63 x 0.83 inches; Weight: 1.62 oz
STABLE PERFORMANCE: Delivers consistent voltage output to ensure reliable operation for longer run times and better device compatibility
ADVANCED SAFETY DESIGN: Built-in smart protection circuit provides safeguards against overcharge, over-discharge, short circuit, and overheating
PACKAGE CONTENTS: Includes 5 x Rechargeable Battery Packs, backed by a 24-Month Worry-Free Warranty and dedicated customer service.
+
+
Overview
Specs
Reviews
Any questions? Our AI beta will help you find out quickly.
Try me now
A professional battery designer & battery pack manufacturer
Precision Battery Engineering for Versatile Electronic Systems
elxjar is dedicated to delivering carefully engineered rechargeable power solutions designed for modern electronic applications that require stable voltage output and dependable energy storage. The brand emphasizes accurate electrical calibration, consistent capacity delivery, and connector-level compatibility to support seamless integration across a wide range of electronic designs. By focusing on chemistry selection, internal protection architecture, and dimensional accuracy, elxjar batteries are developed to align with real-world usage conditions rather than theoretical performance claims. Each product reflects a commitment to practical reliability, supporting users who build, modify, or maintain electronic systems that depend on compact rechargeable power sources for consistent operation.
High-Capacity Rechargeable Power for Custom Electronics
This rechargeable lithium-ion battery is designed to provide stable 3.7V output for electronic systems that rely on wired internal power connections. It is commonly used in custom electronic assemblies, portable lighting solutions, Bluetooth-enabled devices, and solar-assisted projects that require reliable rechargeable energy storage. The integrated PH2.0 two-pin connector allows direct installation in compatible designs without soldering or structural modification.
This battery is intended only for systems designed for single-cell 3.7V lithium-ion operation. It is not suitable for alkaline-powered devices, non-rechargeable systems, or equipment designed for lower-voltage chemistries. For best performance, the battery should be fully charged before initial use, allowing the internal chemistry to activate and stabilize for accurate runtime delivery.
Product Specification
Chemistry
lithium-ion(Li-ion)
Nominal Capacity
2600mAh,
Nominal Voltage
3.7V
Dimensions
Approx Size: L 2.72 " (69.00mm) x W 0.87 " (22.20mm) x H 0.73 " (18.60mm)
Weight
1.69 oz(48g)
Energy
9.62Wh
Connector Type
Equipped with a wired PH2.0 dual-pin connector
Key Product Features
Rechargeable Lithium-Ion Design with Stable Output
This battery is rechargeable and designed to support repeated charge and discharge cycles under normal operating conditions. The lithium-ion chemistry provides consistent voltage output, supporting stable device performance across extended usage periods. An internal protection circuit helps regulate electrical behavior during charging and discharging to reduce the risk of abnormal operation.
Before reviewing specifications, it is important to note that this battery should only be charged using chargers designed for single-cell 3.7V lithium-ion batteries. The nominal voltage is 3.7V with a rated capacity of 2600mAh, resulting in a correctly calculated energy capacity of 9.62Wh. This balance supports longer runtime while maintaining compatibility with compact electronic designs.
The wired PH2.0 two-pin connector supports direct installation when polarity orientation matches the device interface.
Battery Specifications
This rechargeable battery is built using lithium-ion chemistry selected for energy density and stable voltage behavior. Prior to first use, a full charging cycle is recommended to activate the internal chemistry and ensure accurate capacity performance during operation.
Electrical specifications include a nominal voltage of 3.7 volts and a rated capacity of 2600 milliampere-hours. The resulting energy output is 9.62 watt-hours, calculated by multiplying voltage and capacity to ensure consistency across all specifications. The battery is configured as a single-cell rechargeable unit with integrated protective circuitry.
Physical specifications include a compact rectangular wired format designed for secure placement in compatible housings.
Approx Size: L 2.72 " (69.00mm) x W 0.87 " (22.20mm) x H 0.73 " (18.60mm)
Weight: 1.69 oz(48g)
Safety, Storage & FAQ
This battery includes internal circuitry designed to help manage charging and discharging behavior during normal use. Users should avoid exposing the battery to excessive heat, moisture, or mechanical damage. Charging should only be performed with equipment designed for lithium-ion batteries, and polarity should be verified before connection to prevent electrical damage.
For storage, the battery should be kept in a cool, dry environment away from direct sunlight. If stored for extended periods, partial charge levels are recommended to help maintain internal stability. Before first operational use, an extended initial charge, including an overnight charging period, is advised to fully activate the battery chemistry.
Is this battery rechargeable
Yes, this is a rechargeable lithium-ion battery designed for repeated charging cycles.
How should the battery be charged for first use
A full initial charge is recommended before use to stabilize internal chemistry and capacity output.
A professional battery designer & battery pack manufacturer
Precision Battery Engineering for Versatile Electronic Systems
elxjar is dedicated to delivering carefully engineered rechargeable power solutions designed for modern electronic applications that require stable voltage output and dependable energy storage. The brand emphasizes accurate electrical calibration, consistent capacity delivery, and connector-level compatibility to support seamless integration across a wide range of electronic designs. By focusing on chemistry selection, internal protection architecture, and dimensional accuracy, elxjar batteries are developed to align with real-world usage conditions rather than theoretical performance claims. Each product reflects a commitment to practical reliability, supporting users who build, modify, or maintain electronic systems that depend on compact rechargeable power sources for consistent operation.
High-Capacity Rechargeable Power for Custom Electronics
This rechargeable lithium-ion battery is designed to provide stable 3.7V output for electronic systems that rely on wired internal power connections. It is commonly used in custom electronic assemblies, portable lighting solutions, Bluetooth-enabled devices, and solar-assisted projects that require reliable rechargeable energy storage. The integrated PH2.0 two-pin connector allows direct installation in compatible designs without soldering or structural modification.
This battery is intended only for systems designed for single-cell 3.7V lithium-ion operation. It is not suitable for alkaline-powered devices, non-rechargeable systems, or equipment designed for lower-voltage chemistries. For best performance, the battery should be fully charged before initial use, allowing the internal chemistry to activate and stabilize for accurate runtime delivery.
Product Specification
Chemistry
lithium-ion(Li-ion)
Nominal Capacity
2600mAh,
Nominal Voltage
3.7V
Dimensions
Approx Size: L 2.72 " (69.00mm) x W 0.87 " (22.20mm) x H 0.73 " (18.60mm)
Weight
1.69 oz(48g)
Energy
9.62Wh
Connector Type
Equipped with a wired PH2.0 dual-pin connector
Key Product Features
Rechargeable Lithium-Ion Design with Stable Output
This battery is rechargeable and designed to support repeated charge and discharge cycles under normal operating conditions. The lithium-ion chemistry provides consistent voltage output, supporting stable device performance across extended usage periods. An internal protection circuit helps regulate electrical behavior during charging and discharging to reduce the risk of abnormal operation.
Before reviewing specifications, it is important to note that this battery should only be charged using chargers designed for single-cell 3.7V lithium-ion batteries. The nominal voltage is 3.7V with a rated capacity of 2600mAh, resulting in a correctly calculated energy capacity of 9.62Wh. This balance supports longer runtime while maintaining compatibility with compact electronic designs.
The wired PH2.0 two-pin connector supports direct installation when polarity orientation matches the device interface.
Battery Specifications
This rechargeable battery is built using lithium-ion chemistry selected for energy density and stable voltage behavior. Prior to first use, a full charging cycle is recommended to activate the internal chemistry and ensure accurate capacity performance during operation.
Electrical specifications include a nominal voltage of 3.7 volts and a rated capacity of 2600 milliampere-hours. The resulting energy output is 9.62 watt-hours, calculated by multiplying voltage and capacity to ensure consistency across all specifications. The battery is configured as a single-cell rechargeable unit with integrated protective circuitry.
Physical specifications include a compact rectangular wired format designed for secure placement in compatible housings.
Approx Size: L 2.72 " (69.00mm) x W 0.87 " (22.20mm) x H 0.73 " (18.60mm)
Weight: 1.69 oz(48g)
Safety, Storage & FAQ
This battery includes internal circuitry designed to help manage charging and discharging behavior during normal use. Users should avoid exposing the battery to excessive heat, moisture, or mechanical damage. Charging should only be performed with equipment designed for lithium-ion batteries, and polarity should be verified before connection to prevent electrical damage.
For storage, the battery should be kept in a cool, dry environment away from direct sunlight. If stored for extended periods, partial charge levels are recommended to help maintain internal stability. Before first operational use, an extended initial charge, including an overnight charging period, is advised to fully activate the battery chemistry.
Is this battery rechargeable
Yes, this is a rechargeable lithium-ion battery designed for repeated charging cycles.
How should the battery be charged for first use
A full initial charge is recommended before use to stabilize internal chemistry and capacity output.
(5-Pack) 3.7V 2600mAh Li-ion Battery with PH 2.0 2P Connector for Flashlights Toys DIY Electronics Bluetooth Lighting Solar Projects
Learn more about the Detailed Specifications
Additional Information
First Listed on Newegg
April 25, 2026
There are no reviews yet.
Do you own this product?
Warranty & Returns
Warranty, Returns, And Additional Information
Warranty
Please contact the Seller directly for warranty information. Warranty information may also be found on the Manufacturer's website.
