Elecom will release the "DE-C87-20000BK," a three-port power bank with a 20,000mAh capacity and up to 67W output that uses a semi-solid lithium-ion battery, in late June[1]. Its defining feature is a safety-focused design that gels the electrolyte to reduce the risk of fire, combining a long service life rated at roughly 2,000 charge cycles with enough output to charge a laptop[1].
A Semi-Solid Lithium-Ion Battery Balancing Safety and Long Life
The biggest feature is the semi-solid lithium-ion battery, in which the internal electrolyte is turned into a gel[1]. In a conventional lithium-ion battery, lithium ions move through a liquid electrolyte, but the semi-solid type gels the electrolyte to lower the risk of leakage. By reducing the amount of flammable organic electrolyte that is considered one cause of fire accidents, and by suppressing the generation of flammable gas during an internal short circuit, it is designed to be safer[1].
That battery is also a strength when it comes to longevity. While the charge-discharge cycle life of a typical liquid-electrolyte power bank is said to be about 500 cycles, this product claims roughly 2,000 cycles, about four times longer than conventional models[1]. Its discharge temperature range is also wide, from -15°C to 45°C, making it easy to use in extreme heat or severe cold[1]. Rather than a consumable to be replaced in a few years, it is positioned as a device you can use for a long time.
Three Ports with Up to 67W Output, Supporting Laptops Too
For output, it has two USB Type-C ports and one USB-A port, allowing up to three devices to be charged at once[1]. Used on its own, a USB Type-C port supports up to 67W (and up to 67W with PPS) via USB Power Delivery, so you can charge a laptop even where there is no power outlet[1]. When two ports are used at the same time it distributes up to 67.5W in total, and when three ports are used it distributes up to 63W[1].
The 20,000mAh capacity is estimated to charge a 1,800mAh smartphone about 6.6 times, or a 3,000mAh smartphone about 3.9 times[1]. Because it automatically adjusts voltage and current to the connected device, it can charge an iPhone and other devices efficiently, and it also supports pass-through charging that supplies power directly from the charger without going through the battery, as well as charging the unit and a smartphone together[1]. The USB-A port offers a low-current mode for small devices and automatic charging, and it can charge the Nintendo Switch 2 and Nintendo Switch[1]. The bundled USB Type-C cable is short, at about 10cm, a length that makes it easy to carry a smartphone while charging[1].
Health Monitor and Real-time Display Make the Status Visible
Two functions for checking the battery's condition support its safety. "Health Monitor" automatically diagnoses and displays the battery's health based on the number of charge-discharge cycles, serving as a guide for replacement or inspection[1]. The LCD "Real-time Display" shows the remaining battery level in 1% increments, input/output wattage, anomaly detection, and the operating status of the low-current mode in real time[1].
In addition, it includes "Thermal Protection" that monitors and controls the unit's temperature, as well as multiple protections that automatically stop operation when an abnormality is detected[1]. It meets the technical standards of Japan's Electrical Appliance and Material Safety Act (PSE), and the built-in battery is designed to comply with the JIS C 62133-2:2020 and JIS C 8715-2:2024 standards[1][2]. Because the capacity is 160Wh or less, it can also be carried onto an airplane within the prescribed limits[1].
Eco-Conscious Materials and Key Specifications
The body uses recycled plastic and the packaging uses paper from managed forests, among other measures to reduce environmental impact. It is a "THINK ECOLOGY" certified product that meets Elecom's own environmental certification standards[1].
As for the main specifications, the external dimensions are about 70mm wide, 35.5mm deep, and 110.2mm tall, with a weight of about 405g[1][2]. The unit charges in about 2 hours, and the battery uses four 3.85V, 5,000mAh cells for a total of 77Wh[1]. The model number is DE-C87-20000BK, the price is open, and it will be sold at retailers such as Bic Camera, Yodobashi Camera, and the Elecom Direct Shop[1][2].
Summary
The "DE-C87-20000BK" is a high-capacity power bank that builds on the safety of a semi-solid lithium-ion battery and a long life of about 2,000 cycles, with three-port output of up to 67W that can even cover a laptop. Together with the ability to use it for a long time while checking the battery's condition through Health Monitor and the real-time display, it is well suited to anyone who wants to set up a charging environment with an emphasis on safety and practicality. It is scheduled for release in late June.
出典:https://prtimes.jp/main/html/rd/p/000001432.000026881.html
