High-Power in a Card-Size! New Compact 10,000mAh Power Bank with Visible Battery Panel Launches

Elecom Co., Ltd. (Headquarters: Chuo-ku, Osaka; President and CEO: Koichi Ishimi) announces the launch of the "DE-C91L-10000 series," a compact, lightweight, card-sized mobile power bank with a high-capacity 10,000mAh battery and 30W USB Power Delivery output, available from mid-June.

This card-sized power bank is perfect for daily portability. With a 10,000mAh high capacity and support for 30W USB Power Delivery, it can charge a wide range of devices, including smartphones, wireless earphones, and compatible laptops. Charging an iPhone 17, for example, reaches approximately 63% in just 30 minutes (※).

Equipped with one USB Type-C™ port and one USB-A port, it allows simultaneous charging of two devices. It features temperature monitoring and control, along with multi-layered protection for abnormality detection, ensuring safety and peace of mind. Its compact size fits easily into bags or pouch pockets, making it convenient to carry anywhere.

※Based on internal company research as of January 2026

High-Output Dual-Port Model with 10,000mAh and 30W USB Power Delivery Support

This 10,000mAh mobile power bank supports high-output 30W USB Power Delivery, enabling fast charging for smartphones, tablets, laptops, and gaming devices (※1).

With one USB-A port and one USB Type-C port (total of two ports), it supports charging for various devices (※2).

Compatible with smartphones such as iPhone, tablets like iPad, and laptops including MacBook Air.

Capable of charging Nintendo Switch™ 2, Nintendo Switch™, and Nintendo Switch Lite™ (※3).

Includes a same-color USB Type-C cable (approx. 10cm).

※1: Laptop charging is limited to devices with a USB-C port supporting up to 30W USB Power Delivery. Charging may not be possible depending on the laptop’s battery level or usage conditions.

※2: When using each port individually, the USB-C port delivers up to 30W, and the USB-A port up to 22.5W. When both ports are used simultaneously, the total maximum output is 15W.

※3: For Nintendo Switch series, gameplay while charging may not be possible depending on the operating mode. Not compatible with docked use for Nintendo Switch 2 or Nintendo Switch.

※AC charger not included. Please purchase or prepare separately.

▲ Equipped with USB Type-C and USB-A ports, enabling simultaneous charging of two devices

▲ Compact size with 30W USB Power Delivery support, capable of charging compatible laptops

▲ Available in black, plus a white model featuring a cute 'Shiro-chan' illustration

High-Output in a Card-Sized, Lightweight Compact Design

Weighing approximately 185g and nearly the same size as a credit card, the unit is compact enough to fit in a pocket, making it highly portable.

With a rated capacity of 160Wh or less, it is permitted for carry-on luggage on flights (※).

※Exceptions may apply based on airline regulations.

▲ Compact card-sized body, smaller than a smartphone

▲ Fits easily into a pouch pocket

LED Panel Displays Battery Level in 1% Increments

An LED panel allows users to monitor battery level in 1% increments, useful when pre-charging the power bank.

Convenient Charging Features

Supports "Charge Together" functionality, allowing simultaneous charging of both the power bank and a smartphone while connected to the same cable (※).

The product supports pass-through charging, enabling direct power delivery from the charger to the connected device without going through the battery, reducing battery degradation.

Features "Auto-Charge," where a high-performance IC automatically detects connected devices and delivers optimal output for fastest charging (USB-A port only).

Low-current mode enables optimal charging for small electronic devices such as Bluetooth® headsets and earphones (USB-A port only).

Complies with PPS (Programmable Power Supply) specifications, automatically adjusting voltage in 0.02V increments for optimal device-specific charging.

※Charging prioritizes the smartphone. Once smartphone charging completes, the power bank begins charging.

▲ Supports "Charge Together" – connect both the device and smartphone simultaneously

▲ Low-current mode enables optimal charging for small electronic devices

Despite its small size, it delivers powerful and fast smartphone charging

With its 10,000mAh battery capacity, this product can charge a 1,800mAh smartphone approximately 3.3 times and a 3,000mAh smartphone approximately 1.9 times (※1).

The power bank itself can be fully charged in approximately 2 hours and 20 minutes (※2).

Equipped with a rechargeable lithium-ion battery rated for approximately 500 charge cycles.

※1: Estimated number of charges for a powered-off smartphone using a fully charged unit. Actual results may vary if the device is powered on or in use during charging.

※2: Estimated time when charging the power bank alone. Charging time will differ if mobile devices are connected.

Designed for Daily Safety and Reliability

The built-in rechargeable lithium-ion battery complies with JIS C 62133-2:2020 and JIS C 8715-2:2024 safety standards (※).

A high-safety product meeting Japan’s Electrical Appliance and Material Safety Law (PSE) technical standards.

Equipped with Thermal Protection to monitor and control the device’s temperature, protecting connected devices.

※Shipped with approximately 70% charge. Rechargeable lithium-ion batteries gradually discharge over time; we recommend charging before first use.

Eco-Friendly 'THINK ECOLOGY' Certified Product

A product certified under Elecom’s internal environmental standards, bearing the 'THINK ECOLOGY' mark.

Committed to environmental conservation, with over 10% recycled materials used in the main components and constituent materials of the product body.

Uses paper materials sourced from sustainably managed forests for packaging or outer boxes.

Packaging consists only of paper, cardboard, and polybags.

Reduces plastic weight in packaging by over 20% compared to internal benchmark products.