ETS-Lindgren HI-3638 ELV/VLF Electric Field Meter - Manual (Page 20)

20 Battery Charger www.ets-lindgren.com
4. Rotate the board so the desired voltage is facing up, and then reinsert
it into the fuse assembly. The desired voltage should be visible in the
viewing window.
5. Firmly re-seat the fuse assembly back into the power entry module.
The battery charger is ready to use.
Charging the Battery
The HI-3638 ELF/VLF Electric Field Meter contains a rechargeable
nickel-cadmium (NiCd) battery. A fully-charged battery (nominal output voltage of
12 VDC) provides up to 40 hours of continuous operation.
Always check the condition of the battery prior to making any
measurements.
Never attempt to charge a non-rechargeable
battery.
1. Verify that the battery charger is set to the proper voltage for your
AC power source. See Voltage Setting on page 19 for more
information.
2. Connect the battery charger to a power source.
3. Switch the HI-3638 to OFF.
4. Insert the charging plug into the CHARGE connector on the HI-3638.
When the charging plug is connected, the LED on the battery charger
illuminates. It remains illuminated until the charging plug is
disconnected.
5. A full charge will be completed after approximately 16 hours of
charging. Disconnect the charging plug after this amount of time.
Charging the battery longer than 24 hours could
damage the battery cells and reduce battery life.