Retrotec Commercial 441 and 451 DucTester - Manual (Page 18)

Page 18 of 56
©Retrotec Inc. 2015
4.2 Charge the gauge
The rechargeable batteries should be charged when you get it but leave it on the charger overnight to
make sure. These rechargeables will save you about $300 per year so it’s worth having a charger with
the equipment and one in your vehicle. Battery life is about 11 hours on a single charge with WiFi
disabled. Battery life will last 9 hours on a single charge with WiFi enabled.
The batteries will charge more quickly if the DM32 is turned off and when plugged to a wall outlet
(instead of to a computer). A large battery icon will be displayed on the screen, as shown below.
Figure 10: The screen of the DM32 while
the batteries are being charged.
4.3 Follow the
Quick Guide that
came with your
system
The Quick Guide is intended to walk
you through the test Step by Step.
Check it off as you go. Use this
manual for additional guidance and
watch the videos on the Retrotec
website and take the on-line
training course.