Low Battery Level - Fluke DATAPAQ XDL12 User Manual

The logger intelligently monitors the battery, ensuring it is never overcharged.
Thus, by leaving the charger connected to the logger, the logger will always be on
charge and ready for use. This will not damage the battery or reduce its service life.
If the logger's battery is low when the logger is required quickly, it can be
connected to the electricity supply via the charger and used immediately. The
battery will then charge while the logger is running. However, to ensure the highest
level of accuracy, it is recommended that the logger is not connected to mains
electricity during data-collection (see p. 16).
New batteries – or ones which have been unused for several months –
should be charged for 24 hours before use.
NiMH batteries discharge slowly even when not in use and will need
charging if left for more than three weeks.
If the logger is not in regular use, the battery should be charged at least
every 3 months. If this is not done, the battery may drain to a level where it
cannot successfully be recharged.
Where batteries are too cold (below 0°C/32°F), too hot (over 45°C/113°F) or
too deeply discharged, they must be pre-conditioned before fast charging can
begin. Pre-conditioning (slow charging) occurs automatically if it is required, and
is shown by the battery status LEDs (steady yellow + flashing red). If the
battery is still being pre-conditioned after 5 hours, there may be a fault; contact
Datapaq.
In extreme cases of low battery charge, the logger may not operate at all
(yellow LED will flash rapidly for 2 seconds). If this happens:
1. Disconnect the communications lead from the logger.
2. Turn the logger off (press green and red buttons together, and hold for
3 seconds).
3. Connect the charger.
The logger should then operate normally while recharging – though pre-
conditioning may be necessary, as above.

Low Battery Level

When the battery's charge drops to 20% of the full level, this will be shown by
the logger LEDs (p. 12) and (if connected to the PC) by the Insight software.
15
Specifications and Operation
DATAPAQ XDL12