User's Manual

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2.2 CHARGING AND BATTERY LIFE
The TW-3.0 Handheld requires 3XAA batteries to operate; these can be primary (non-
rechargeable) or secondary (rechargeable) cells and can be alkaline, Ni-MH or Li-Po
chemistry. WARNING! DO NOT CHARGE BELOW 0°C
The battery life of the TW-3.0 Handheld depends on the how it is being used and the
fewer functions which are enabled the quicker the longer the battery life will be. Some
usage examples are below:
Channels in use
Sample rate
Functions in
use
Ambient
Temperature
Battery Life
1
1Hz
None
20°C
300 Hours
Channels in use
Sample rate
Functions in
use
Ambient
Temperature
Battery Life
1
1Hz
USB logging
20°C
50 Hours
Channels in use
Sample rate
Functions in
use
Ambient
Temperature
Battery Life
1
1Hz
Serial output
20°C
35 Hours
Channels in use
Sample rate
Functions in
use
Ambient
Temperature
Battery Life
4
1Hz
None
20°C
280 Hours
Channels in use
Sample rate
Functions in
use
Ambient
Temperature
Battery Life
4
1Hz
USB logging
20°C
40Hours
Channels in use
Sample rate
Functions in
use
Ambient
Temperature
Battery Life
1
4Hz
None
20°C
270 Hours