Flex 12EX2 Standard, AB and Tandem Instruction Manual
November 2017
Page 53 of 56
6.7 Changing Batteries
Change transmitter batteries (“AA” alkaline battery x 2) by unscrewing the battery cover
located on the backside of the transmitter. During battery installation make sure the batteries
are installed correctly, with “+” to “+” charge and “-” to “-” charge. Also make sure the screw is
tightened after battery installation to avoid water, moisture, dirt, grease, and other liquid
penetration.
6.8 Battery Charging
The transmitter is designed to accept any off-the-shelf NiMH
rechargeable batteries. When charging both transmitter and
individual batteries at the same time the priority always goes
to the transmitter charging. The individual battery charging
begins only after the transmitter charging is completed.
Depending on the battery capacity the average charging time
is approximately 3 hours from completely drained to fully
charged. Solid red on the LED represents charging in
progress, solid green represents batteries fully charged, and
LED off represents no batteries detected. Do not use any
rechargeable lithium ion batteries as they will damage both
the transmitter and the charging station.
