Elecom Launches Semi-Solid Battery Mobile Battery with “Health Monitor” for Enhanced Safety and Longevity

Elecom’s Commitment to Safe Batteries
Understanding Semi-Solid Batteries
“Health Monitor” Feature for Continuous Safe Use
Approximately Four Times Longer Lifespan and Wide Operating Temperature Range
1. Estimated Number of Charges
High Safety Achieved Through Multiple Protections
Environmentally Friendly Materials
Main Specifications
Product Details and Purchase Information
1. Semi-Solid Battery Mobile Battery 5,000mAh
  1. Black Model
  2. White Model

Elecom’s Commitment to Safe Batteries

Elecom has consistently pursued the development and popularization of safe mobile batteries. This commitment began with the launch of lithium iron phosphate (LiFePO4) mobile batteries in 2022, followed by what was verified as the world’s first (according to a market survey by Mirai Trend Research Institute as of November 27, 2024) sodium-ion battery mobile battery in 2025. In April 2026, the company further enhanced safety by releasing a 10,000mAh mobile battery utilizing semi-solid lithium-ion technology, designed for portability and long life. The newly announced 5,000mAh model is lighter, making it even more suitable for outdoor use.

For more details, please visit the product special page: https://www.elecom.co.jp/pickup/contents/00126/

Understanding Semi-Solid Batteries

Traditional batteries rely on lithium ions moving within a liquid electrolyte between the positive and negative electrodes. The semi-solid battery adopted in this new product gels the electrolyte, significantly reducing the risk of liquid leakage. This design also decreases the amount of flammable organic electrolyte, a known cause of ignition accidents, and suppresses the generation and release of flammable gases during internal short circuits, thereby enhancing safety.

“Health Monitor” Feature for Continuous Safe Use

This product introduces the new “Health Monitor” feature. It automatically diagnoses the battery’s health based on the number of charge and discharge cycles and displays it clearly with an LED color. This function serves as a guide for replacement or inspection. The LED panel also allows users to check the battery remaining capacity in 1% increments, which is convenient when charging the mobile battery itself. It is important to note that regardless of the “Health Monitor” status, if swelling, unusual odor, or abnormal heat generation is observed, use should be stopped immediately.

Approximately Four Times Longer Lifespan and Wide Operating Temperature Range

Conventional mobile batteries using liquid lithium-ion batteries typically have a cycle life of about 500 times. By gelling the electrolyte, semi-solid lithium-ion batteries achieve higher chemical stability, extending the battery life to approximately 2,000 cycles, which is about four times longer than conventional batteries.

Furthermore, while typical mobile batteries have a discharge temperature range of 0℃ to 40℃, this product supports a wider range from -15℃ to 45℃ (discharge environment temperature). This broad temperature compatibility allows for safe use in various environments, including extremely hot or cold regions. It should be noted that the product is not waterproof or dustproof.

Estimated Number of Charges

The mobile battery can charge a 1,800mAh smartphone approximately 1.6 times and a 3,000mAh smartphone approximately 0.9 times. These are approximate figures for charging a powered-off smartphone with a fully charged mobile battery. Actual charging performance may vary if the device is powered on or in use during charging.

High Safety Achieved Through Multiple Protections

The device features a reliable circuit design with five protection functions: overcharge, over-discharge, overcurrent prevention, short circuit protection, and temperature detection. Additionally, it incorporates Thermal Protection, which monitors and controls temperature during power flow to protect connected devices.

Environmentally Friendly Materials

To minimize environmental impact, the product’s casing is made from recycled plastic, and the packaging uses paper sourced from responsibly managed forests.

Main Specifications

Item	Specification
Compatible Devices	iPhone, USB-chargeable smartphones, tablets, and other small electronic devices
Connector Shape (Power Input)	USB Type-C™ port ×1
Rated Input Voltage	USB Type-C port: 5V/9V
Rated Input Current	USB Type-C port: 3A/2A (max 18W)
Connector Shape (Power Output)	USB Type-C port ×1, USB-A port ×1
Output	USB Type-C: max 22.5W (5V/3A, 9V/2.22A, 10V/2.25A)・PPS max 20W (5～11V/1.8A), USB-A: max 22.5W (5V/2.4A, 9V/2A, 10V/2.25A), 2 ports simultaneous use: total max 15W (5V/3A)
Battery Type	Rechargeable semi-solid lithium-ion battery
Battery Rated Capacity	3.85V/5,000mAh 19.25Wh
Charging Time	Approximately 1 hour 40 minutes (when charging the product itself)
External Dimensions	Approximately W68mm × D11.4mm × H110mm
Weight	Approximately 135g
Cycle Life	2,000 times
Accessories	USB Type-C to USB Type-C cable (approx. 0.1m) ×1, Insulation seal ×1
Operating Temperature Range	Charging: 0℃～35℃, Discharging: -15℃～45℃
Electrical Appliance and Material Safety Law	PSE Compliant
Warranty Period	1 year