SW500 Wired Scale Systems, Users
Rev E,October, 2016
Page 29 of 36
Power / Battery
The SW scale comes standard with a 9V alkaline battery. Lift up and out on the battery
holder located on the back of the scale indicator. Install new battery with attention to
polarity and push the battery holder back in. The scale will operate about 80 hours with
a fresh alkaline battery.
Optional Charger This option (sold separately) allows the use of a rechargeable 9V
NiMH battery. See section titled “Optional Equipment” on page 5.
WARNING: Do not plug the charger in if you are using a 9V alkaline
battery (non-rechargeable). This could result in damage to the battery
and your scale.
Your scale will operate indefinitely off of the charger while the battery charges. The
scale can be left on or off while the charger is plugged in. Expect 12 to 16 hours to
completely recharge the battery.
With a fully charged battery the scale will operate about 35 hours. This specified time is
reduced the more the backlight is used. If the battery power is low the SW display will
flash a “Low Battery” message. Scale will shut off if the “Low Battery” message is
ignored too long. If a rechargeable battery is being used, recharge the battery. If you
are using an alkaline cell, replace the battery.
Auto-off feature
The SW indicator has an auto-off feature to save battery life. If no keys were pressed,
no serial data was sent, and the weigh readings have not changed for 10 minutes, the
backlight will automatically turn off. If no keys were pressed, no serial data was sent,
and the weigh readings have not changed for 60 minutes, the SW scale will
automatically turn off.
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