7.4 V at 1880 mAh Li-Ion Battery for ICOM Licence free WLAN Handheld Radio IP-100H, ID-31A & ID-51A

With the ID-31A Submersible Radio, ID-51A PLUS VHF/UHF Digital Transceiver with GPS, Micro SD Card and More  7.4V/1880mAh (min.), 2000mAh (typ.) Li-ion battery. Operating time: 8 hours in FM mode and 7.5 hours in DV mode. (Typical operation in 1:1:8 duty cycle)