Technical data

Maintenance 6
U1401A User’s and Service Guide 121
Recharging the batteries
This instrument is powered by four sets of rechargeable bat-
teries. Charge the batteries immediately when the low bat-
tery annunciator starts flashing. It is strongly recommended
that you use only the specified type of 24 V AC adapter to
charge these rechargeable batteries. Do not turn the rotary
switch while the instrument is being recharged because a DC
24 V supply is applied to the charging terminal.
Follow the procedures below to recharge the batteries:
1 Power down the instrument and disconnect all the test
leads from the terminals.
2 Plug the AC adapter into the jack on the side panel.
3 Set the slide switch at the CHARGE position.
4 The red light indicates that the batteries are being
recharged.
5 When the batteries have been fully recharged, the green
light turns on. Remove the AC adapter and set the slide
switch at the M or M/S position.
WARNING
Do not discharge a battery by shorting it or subjecting it to reverse polarity.
Do not mix different types of battery. Make sure a battery is rechargeable
before charging it.
NOTE
• A new rechargeable battery comes in a discharged condition and must
be charged before use. Upon initial use (or after a prolonged storage
period) the rechargeable battery may require three to four
charge/discharge cycles before achieving maximum capacity. To
discharge, simply run the multimeter using the rechargeable battery’s
power until it shuts down or until the low battery warning appears.
• In some instances, the multimeter may indicate that the charging is
complete after ten minutes or so when charging a new rechargeable
battery. This is a normal phenomenon with rechargeable batteries.
Remove the rechargeable battery from the device, re-insert it and
repeat the charging procedure.