Flex Duo Operator Manual
August 2021
Page 12
2.9.3 Charging
1. The Flex Duo transmitters are designed to accept any off-the-shelf Ni-MH rechargeable batteries.
2. Depending on the battery capacity, the average charging time is approximately 1.5 hours from completely
drained to fully charged.
3. Solid red on the LED represents charging in progress, solid green represents batteries fully charged, and LED
off represents no batteries detected.
Figure 2-4
2.9.4 Retaining Belt
For mobile applications, the retaining belt can be used to prevent the transmitter from becoming loose in the cradle
or falling out when the equipment moves through rough terrain.
Figure 2-5
WARNING
Do not use rechargeable lithium ion batteries, as they will damage both the transmitter and the charging
station.
