Keba KeTop T100, User Manual, Page: 124 / 163

The KeTop switches to the back-up mode if the external power supply is dis-
connected. In back-up mode, the display is switched off and the touchscreen,
the keyboard and the USB interface are deactivated. The CPU and the file
system (Flash and RAM) remain active. When the KeTop is connected to the
external power supply again, it switches back to the normal operating mode
within 1 second.
10.8.4 Back-up cycle, battery capacity
A back-up cycle is limited to 15 minutes. On expiry of this time, the KeTop is
switched off completely.
The back-up battery capacity is designed for 4 cycles without having to re-
charge the back-up battery in the meantime.
In order to prevent a deep discharge of the back-up battery, the KeTop is
switched off before expiry of the back-up time if the back-up battery reaches a
critical capacity level.
10.8.5 Safety notes
The back-up battery is a lithium ion battery for which the following safety notes
apply:
CAUTION
●
Charge the back-up battery only via the KeTop
●
Do not immerse lithium ion batteries in water:
If the hermetic seal of the lithium ion battery is defective, the Li ion cell will
react very violently with water.
●
Preferably use sand to extinguish burning Li ion batteries; do not use water!
●
Li ion batteries are sensitive to mechanical shocks!
They can ignite as a result of an internal short-circuit (e.g. caused by crush-
ing) and in contact with air.
●
Do not:
Heat, burn, short-circuit or dismantle Li ion batteries!
10.8.6 Disposal of the back-up battery
CAUTION!
●
The back-up battery is special waste and must be disposed of in the pre-
scribed manner.
●
Although the back-up battery has a low voltage, it can give off enough elec-
tricity in the event of a short-circuit to ignite inflammable materials. It
therefore must not be disposed of together with conductive materials (such
as e.g. iron chips, oil-contaminated wire wool, etc.).
Accessories KeTop T50VGA
© KEBA 2009
User's Manual V1.50 124