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Charging Batteries
• Press the power OFF button.
• Connect the AC power cord between the 631-X power receptacle and an AC power source.
Complete battery recharging takes 14 hours.
The 631-X contains a trickle charger so it may be continually plugged into an AC power
source without damaging the battery pack.
• The battery pack may be charged outside the instrument with an optional AZI IDC Battery
Charger. (AZI P/N 4000-1011, for 115 VAC, P/N 4000-1012, for 230 VAC)
Obtaining Maximum Battery Life
There are certain inherent limitations to NiCad batteries. The primary limitation is a memory
effect that occurs when the batteries are partially discharged and then recharged, repeatedly. This
memory leads to a drastic reduction in the usable battery life. To prevent this memory effect,
periodically allow the battery pack to discharge completely, and then recharge the battery pack.
• To obtain maximum battery life, follow these three (3) steps:
At least once a month wait until LO BAT appears on the digital meter before recharging
the battery pack.
Charge the battery pack when the LO BAT indicator comes on. Excessive discharge can
damage the battery pack.
Before storing the instrument verify the power is OFF.
• When the batteries fail to hold a charge, the battery pack should be replaced.
Battery life under normal usage is approximately 1 year, depending on the number of
charge and discharge cycles.
AZI Customer Service 800-528-7411 or 602-470-1414 Page 17 of 50