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Battery Wi-Fi

Battery Wi-Fi

MF855 / ZMI

Large capacity 7,800mAh battery & WiFi

Main Specifications

Size (Width (W) x Height (H) x Thickness (D) Approx. 75 x 102.2 x 22.3 mm (excluding protrusions)
Weight 約235g
Battery capacity 7,800mAh
Continuous standby time Approximately 1560 hours
Tethering continuous communication time Approximately 18.5 hours
Charging time AC adapter (1.0A): Approx. 9.5 hours
AC adapter (1.8A): Approx. 5.5 hours
Communication method AXGP / FDD-LTE / 3G
Maximum communication speed (for "4G") *1 FDD-LTE: Maximum download speed 112.5Mbps*2 / Maximum upload speed 37.5Mbps
AXGP: Maximum download speed 110Mbps *2 / Maximum upload speed 10Mbps
*When connected to wireless LAN, the maximum download speed is about 40Mbps.
Maximum communication speed (for "3G") *1 Maximum download speed: 21Mbps / Maximum upload speed: 5.8Mbps
Supported frequencies [4G] 2.5GHz / 2.1GHz / 1.7GHz
[3G] 2.1GHz / 900MHz
Wi-Fi (compatible standards, frequencies) IEEE802.11 b/g/n (2.4GHz)
Maximum number of simultaneous connections 8台
Interface USB 2.0
USIM Micro-SIM
Input voltage 5.0V/2.0A
Output voltage/output current (max) 5.1V/2.1A
What's in the box Simple manual (also warranty card), USB cable
  • *1The communication speeds listed are the maximum values based on technical standards and are based on a best-effort approach, and are not guaranteed as effective speeds. Communication speeds may vary depending on the communication environment and congestion. Maximum communication speeds also vary depending on the area you use. Please note that areas offering download speeds of up to 112.5Mbps will be gradually rolled out in some areas, such as Tokyo, Nagoya, and Osaka. For more information, please click here.
  • *2When connected via a USB cable, download speeds of up to 112.5Mbps are supported.

Contact Us

Support Desk TJC Call Center
telephone number 050-2018-0091
Business hoursMon-Fri 9:00-17:00 (Excluding public holidays, New Year's holidays, and other company holidays)
*Customers are responsible for call charges.

Related information

  • *The company names, system names, and product names listed on this page are generally registered trademarks or trademarks of the respective companies.
  • *All images are for illustrative purposes only. Please note that the actual product may differ slightly from the images.
  • *Specifications and appearance are subject to change.
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