User's Manual

Batteries
2
Batteries
The Flytec Balloon TT34 uses one regular 9V Alkaline battery. In new devices, the battery is already installed.
The use of rechargeable batteries is not recommended, since the lower capacity of rechargeables diminishes the
operation autonomy of the TT34 considerably.
TheTT34 is designed to use a very low amount of electric power during regular operation. With it’s automatic
activation and deactivation, you
Low battery alert
Along with the current temperature, the TT34 also transmits its own battery state. This allows the receiving
variometer to issue an alert once the TT34 reports low battery. Once that occurs, replace the TT34’s battery before
the next flight.
Replacing batteries
The TT34’s battery consumption is very low. Most pilots replace the TT34’s battery once a year as part of the
balloon envelope maintenance. Of course, depending on the actual airtime, more frequent replacements, as indicated
by the low battery alert, can be required.
1. Remove the TT34 from the balloon envelope.
2. Open its casing with a regular screwdriver.
3. Disconnect the battery from its terminal.
4. Connect a new 9V Alkaline battery to the terminal.
5. Close the casing.
6. Re-install the TT34 in the balloon envelope.