10
Introduction
Batteries
The Model 2500A VET can be powered by either 4 AA-size alkaline batteries or the optional Model
2500B Rechargeable NiMH (Nickel Metal Hydride) Battery Pack.
Commercially available rechargeable AA batteries can be used in the Model 2500A VET, but are not
recommended by Nonin.
Operating Life:
• Alkaline batteries - 60 hours, continuous
• Rechargeable NiMH battery pack - 40 hours, continuous
Storage Life:
• Alkaline batteries:
• If calendar/clock is set, approximately 6 weeks.
• If calendar/clock is not set, approximately 10 -12 months.
• Rechargeable NiMH battery pack:
• If calendar/clock is set, approximately 3 weeks.
• If calendar/clock is not set, approximately 2 months.
Recharge Time Using Model 2500C Charger Stand:
• Rechargeable NiMH battery pack - 180 minutes
Low and Critically Low Battery
Low and critically low battery capacity is indicated with a flashing Low Battery indicator and a
medium priority alarm.
When the batteries are low, the Low Battery indicator flashes and battery capacity allows for less
than 30 minutes of normal operation.
When batteries are critically low, the Low Battery indicator flashes, the digital displays go blank, and
the Pulse Quality indicator blinks amber or red, but not green. Any SpO
2
or pulse rate alarms in effect
when critically low battery capacity is reached are latched, and flashing dashes appear on the
corresponding display. After 10 minutes at critically low battery capacity, the pulse oximeter shuts
off automatically.
CAUTION:
Use only Nonin-specified battery types with this device.
CAUTION:
Do not use fully charged and partially charged batteries at the same time.
This may cause the batteries to leak.
WARNING: The device turns off after approximately 10 minutes when at critically low
battery capacity.
CAUTION:
Replace the batteries as soon as possible after a low-battery indication.
Always replace the batteries with fully charged batteries.
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