Xantrex Technology 250 - Manual (Page 24)

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9 Connecting to an External Battery
9.1 Extended Operating Time
Much longer battery operating time is possible when
connecting Portable Power 250 to a larger external battery. For
example, an external 60 amp-hour battery will give
approximately 3 to 4 times the operating time of Portable Power
250’s internal battery.
WARNING: Use a sealed, non-spillable battery for indoor
use. Common auto and marine batteries are not suitable
for indoor use unless their fumes are vented outdoors.
They contain acid, which is hazardous if spilled. Wear eye
protection and protective clothing when connecting
Portable Power 250 to an external battery.
9.2 Connecting an External Battery
The external battery is connected using the Jump-Start Cables
as follows:
1. Connect the Jump-Start Cables to the Jumper Cable Port
on the left side of Portable Power 250.
2. Connect the red positive (+) clip at the end of the Jump-
Start Cables to the positive (+) terminal of the external
battery.
3. Connect the black negative (-) clip at the end of the Jump-
Start Cables to the negative (-) terminal of the external
battery.
4. If the positive and negative clips are properly connected,
the green Battery Clips Correct light will illuminate. If the
clips are not properly connected the Reverse Polarity
Alarm will sound and the red Battery Clips Incorrect light
will illuminate. Remove both clips to cancel the alarm and
repeat steps 2 and 3.
5. When the external battery is discharged or no longer
needed, remove the red clip first, then remove the black
clip before recharging Portable Power 250.
WARNING: Do not remove the Jump-Start Cables from
the Jumper Cable Port when the positive and negative
clips are connected to the terminals of the external
battery. This will disable the jump-start safety feature and
could result in sparking and explosion.