Sanwa Supply Co., Ltd. announced the "BTL-RDC42," a mobile battery that supports AC output.
It will be released in late August 2025.
A Mobile Battery with AC Output from Sanwa Supply!
Sanwa Supply has announced the "BTL-RDC42" mobile battery.
The "BTL-RDC42" is a high-capacity mobile battery with 20,000mAh that supports AC output.
It is equipped with three types of ports: one AC port, two USB-A ports, and one USB-C port.
It can charge at up to 65W via AC and up to 45W via USB-C.
It can be used to power and charge not only laptops but also camera batteries and mobile projectors.
Please note that the AC output port and USB-C port cannot be used at the same time.
Despite having three types of ports and a high 20,000mAh battery, it is about 25% thinner compared to previous models.
Since it is not bulky in a bag, it can be used in various situations, such as for travel or business trips.
The case is made of aluminum, which combines a high-quality feel with durability.
Additionally, it can be brought into an airplane cabin .
The retail price of the "BTL-RDC42" is 37,400 yen (tax included).
For more details, please see the "BTL-RDC42" product page.
ノートパソコンへ給電できる
AC出力とUSB Power Delivery出力対応の
モバイルバッテリーを発売■モバイルバッテリー（20000mAh・AC65W・PD45W）
品番：BTL-RDC42https://t.co/f9iVPnSIQQ— サンワサプライ【公式】 (@sanwainfo) August 7, 2025
| "BTL-RDC42" Product Overview | |
|---|---|
| Rated Input | DC5V/3A, DC9V/2A, DC12V/1.5A, DC15V/1.2A (max 18W) |
| AC Rated Output | AC100V, 60Hz, max 65W |
| USB Rated Output Voltage/Current | [USB Type-C] DC5V/3A, DC9V/3A, DC15V/3A, DC20V 2.25A (max 45W) [USB A] DC5V/2.4A (total max for 2 ports) |
| Number of USB Output Ports | 3 ports *1 USB Type-C, 2 USB A |
| Battery Capacity | 14.4V/5000mAh (72Wh) *Equivalent value in parallel connection: 3.6V/20,000mAh |
| Size | W109 x D28 x H205mm |
| Weight | Approx. 740g |