Power Sources
AC Adapter
Batteries
NiCad Versus NiMH Battery
Reserve Battery
AC Adapter
AC Adapter
Height 1.97 inches
Depth 5.47 inches
Width 3.15 inches
Weight 0.88 lb
Input current 100/240 VAC
Rated output voltage 16 VDC
Output current 2.0 A peak
Minimum load 83 mA
Frequency 50/60 Hz
Temperature range:
Operating 32
to 104F
Storage -40 to 158F
Batteries
Main & Reserve Batteries
NiCad Main Battery: Insertion/Removal/Contacts
NiMH Main Battery: Insertion/Removal/Contacts
NOTES ON BATTERIES:
320N uses only NiCad batteries.
320N+ uses either NiCad or NiMH batteries.
NiCad battery for both the 320N & 320N+:
System power life approximately 3 hr
Full charge approximately 3 hr
Battery life approximately 500 charges
Capacity 2 x 1700 mAh
Temperature range:
Charged 32 to 113F
Discharged -4 to 140F
Storage -22 to 122F
NiMH battery for the 320N+:
System power life approximately 4 hr
Full charge approximately 3.5 hr
Battery life approximately 500 charges
Capacity 2 x 2200 mAh
Temperature range:
Charged 32 to 95F
Discharged 32 to 122F
Storage -4 to 86F
Measurements NiCad & NiMH:
Height 1.26 inches
Depth 5.51 inches
Width 2.64 inches
Weight 1.5 lb
Nominal open circuit voltage 8.4 VDC
NiCad Versus NiMH Battery
To distinguish between a NiCad and a NiMH battery, look for the type and temperature sensing contact located above the left positive terminal on the end of the NiMH battery only.
The NiCad and the NiMH batteries each consist of 2 banks of 7 extended AA-size cells. The battery is enclosed in a heat-shrunk plastic case with contacts on one end and a ribbon pull tab on the other.
The NiCad battery has 3 metal contacts; the longer contact is the common negative terminal that bridges 2 contacts in the system's battery compartment. Continuity between these bridged contacts indicates the presence of the battery to the power management system.
The NiMH battery has a fourth contact. The type and temperature sensing contact is recognized by the 320N+ as a NiMH battery. The 320N+ firmware does not begin charging if the battery temperature is above 104F or if the temperature rises above 140F while charging.
NOTE: The 212N and 320N do not recognize (or charge) the NiMH battery.
Reserve Battery
The internal reserve battery is composed of 4 half-length AA-size, 270 mAh, NiCad batteries in an in-line stack. When fully charged, they can power the system for about 8 minutes before being fully discharged. Although, in operation, the reserve battery is permitted to support the computer for 2 to 3 minutes at the most.
When the computer is operating and the main battery is removed, the reserve battery provides temporary power for the computer until another battery pack can be inserted.
When the computer is operating and the main battery is depleted, the computer switches to the reserve battery while indicating that the computer should be shut down, the main battery should be replaced with a charged battery, or an external power adapter should be attached. In any case, if the computer remains on reserve battery for an extended period of time, it shuts itself off.