Keysight Technologies Keysight U1401B Schnellstart Handbuch Seite 5

Do not discharge a battery by shorting it or subjecting
WARNING
it to reverse polarity. Do not mix different types of
battery. Make sure a battery is rechargeable before
charging it.
Do not turn the rotary switch while the instrument is
CAUTION
being recharged because a DC 24 V supply is
applied to the charging terminal.
Keysight U1401B Quick Start Guide 5