DeFelsko PosiTector DPM v.3.1 Full Manual - Manual (Page 31)

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The battery indicator displays a full bar with fresh alkaline
or fully charged batteries installed. As the batteries weaken, the
bar will be reduced. When the battery symbol is low
the Gage can still be used, but the batteries should be changed or
recharged at the earliest opportunity. The Gage will turn off
automatically when batteries are very low, preceded by a Low
Battery Warning on the display.
To retain all user settings and stored memory readings, only
replace the batteries after the Gage has powered-down.
Power Supply / Battery Indicator Power Supply / Battery Indicator
Power Source: 3 AAA alkaline, Lithium or optional Nickel-metal
hydride (NiMH) rechargeable batteries. For best battery indicator
results, ensure the appropriate Battery Type is selected in the
Setup > Battery Type menu (pg. 13).
Battery performance decreases at low temperatures.
!
Additional Accessories
Rechargeable Battery Pack - 4 AAA eneloop batteries
The PosiTector can operate on rechargeable batteries and
DeFelsko recommends the use of eneloop (NiMH) rechargeables.
eneloop batteries combine the advantages of regular rechargeable
batteries and disposable (Alkaline) batteries. They discharge very
slowly and can be stored for long periods without having self
discharge concerns. Eneloop batteries come pre-charged and
ready to use immediately. See: www.eneloop.info
AC Power Cable Kit
An optional AC Power Cable Kit is available for continuous
operation or battery charging through the PosiTector’s built-in
USB port (as shown on page 18). This kit supplies several
alternate power solutions for your battery-operated PosiTector.
They allow the gage to operate continuously without the need for
batteries.