HP HP-25 User Manual

If you use your HP-25 extensively in field work or during travel,
you may want to order the optional Reserve Power Pack, con-
sisting of a battery charging attachment and a spare battery
pack. The Reserve Power Pack enables you to charge one
battery pack while using the other in the calculator. See the
Accessory Brochure shipped with the calculator for details.
If a battery pack will not hold a charge, and seems to discharge
very quickly in use, it may be defective. The battery pack is
warranted for one year, and if the warranty is in effect, return
the defective pack along with your HP-25 and battery charger/
ac adapter to Hewlett-Packard according to the shipping in-
structions. If the battery pack is out of warranty, see your
nearest dealer or use the Accessory Order Form provided with
your HP-25 to order a replacement.
Service
Low Power
When you are operating from battery power in RUN mode, all
decimal points except the true one light to warn you that you
have a minimum of 1 minute of operating time left.
60.2. ..... 23| Low Power Display
True Decimal Point
You must then either operate the calculator from the battery
charger/ac adapter as described under AC Line Operation, or
you can substitute a fully charged battery pack for the one in the
calculator.
Blank Display
If the display blanks out, turn the HP-25 OFF, then ON.. If[0.00]
does not appear in the display in RUN mode, check the following:
1. Ifbattery charger is attached to the HP-25, make sure it is
plugged into an ac outlet. If not, turn the calculator OFF
before plugging the charger into the ac outlet.
. Examine battery pack to see if the contacts are dirty.
Substitute a fully charged battery pack, if available, for the
one that was in the calculator.
4. If display is still blank, try operating the HP-25 using the
charger (with the batteries in the calculator).
5. If, after step 4, display is still blank, service is required.
(Refer to Warranty paragraphs.)
W N

HP HP-25 Specifications

General

Brand	HP
Model	HP-25
Category	Calculator
Language	English