Verifying Battery Charge State - Extech Instruments S1500T User Manual

4.2.1 Important Notes on Charging Batteries
The model S1500T printers require an adaptor output of 10VDC/1.32A.
The battery fast-charge is initiated each time the power adapter is connected to the
printer
The fast-charge controller checks the battery's voltage and temperature, before the
start of the fast recharge process. If the battery voltage or the temperature is outside
of the fast-charge limits, the charger defaults to trickle charge at C/10 or 70mA rate
Optional external battery chargers are available for Extech batteries. Refer to
4.7 "Printer Supplies" for detailed information.
4.2.2 Important Notes on Replacing Batteries
Check for the correct Extech part number for the battery and only order that part for
your new battery.
Risk of explosion if battery is replaced by an incorrect type
Follow instructions in Section 4.5 to dispose used batteries

4.3 Verifying Battery Charge State

We strongly recommend testing your printer before returning it to Extech. Follow these steps
to identify and correct any battery power problem that may be encountered. These will help
to identify that the fault is with the printer and not some other part of your system.
To test the AC adaptor:
Use a multi meter and measure the output voltage. Output should be 10VDC.
Press the <ON/OFF> switch and wait until all LED's are off.
Insert the AC adaptor plug into the printer. If the amber LED goes on, the battery is
not fully charged but the charge circuit is functioning.
The AC power portion of the circuit appears ok.
To test the DC power:
Disconnect the AC Adapter once the battery has charged for 5 minutes or so.
Press and hold the <FEED> switch, then press and release the <ON/OFF> switch and
then release the <FEED> switch. The printer will print a "self test" receipt
If the self test receipt is printed, the DC power is ok.
1500T User's Guide Rev 2.1
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