12 VDC @ 2.2 AH Lithium Ion Battery pack 18650
Designed to fit inside the FG-01 Antenna Analyzer or the R4040 QRP Transceiver. Not recommended for the 2 band R4020 or R4030 as there is not a charging port available for those transceivers.
This Battery pack will charge with the charger Included in the FG-01 Antenna Analyzer or R4040.
The pack has a built in protection circuit