Hanna Instruments HI 9829 Instruction Manual page 26

It takes about 6 hours to completely charge fully
discharged batteries.
Note The meter log, GPS information, system setup and status can be viewed
during battery charging. The battery charging status is indicated by a
small animated battery icon found in the lower left corner.
During charging the meter may feel quite warm. This is normal.
"Battery temp" (under "Meter Status") may display values approaching
50 °C.
Automotive auxiliary power outlet (Cigarette lighter receptacle)
To charge batteries from a automotive auxiliary power outlet, use HI 710046
cabl e .
• Connect the HI 710046 cable to the probe connector on the meter and to
the auxiliary plug.
• The battery charging animation will be displayed.
A complete battery charging will take about 6 hours if they are completely
discharged.
5.1.3 Probe Battery Installation (for logging probes
only)
To install probe batteries:
Replace batteries in a nonhazardous area
only. Remove the battery cover by turning it
counterclockwise. Insert the batteries
observing polarity.
Note: Do not mix old and new
batteries.
Replace the battery cover by engaging the
threads and turning it clockwise. Continue
turning until it is flush with probe body.
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