Daktronics MS-2013 Portable LED Scoreboard - Manual (Page 20)

14 Battery Care & Charging

A DC component is
continuously drawing 3 A
or more, holding the
charger in its absorption
stage.

Disconnect any
accessories while
charging. If conditions
on board force the
charger to stay in
absorption stage for
several days, battery
damage may occur.
When AC power is applied,
neither LED turns on.

Confirm that all AC power
is available.

Internal failure

Reset AC power.

Contact Daktronics
Customer Service for
replacement.
The ground fault circuit
(GFCI) trips when charger is
on.

Problem with the AC outlet

Defective or oversensitive
charger

Check all connections
at the AC outlet.

Try a different outlet, or
replace the charger.
Radio Interference
The on-board battery charger generates and can radiate radio frequency energy. The
equipment has been tested and found to comply with the limits for a Class A digital device,
pursuant to FCC rules, Part 15.
With proper installation, there should be no interference with any radio communications,
either with the scoreboard's own receiver or other radio-controlled devices in the immediate
area. However, if it is determined that this device may be the cause of radio interference, try
to correct the interference with one or more of the following measures:
 Reorient or relocate the receiving antenna.
 Increase the separation between the equipment and the receiver.
 Connect the equipment to an AC outlet on a circuit different from the receiver.
5.2 Battery & Charging Safety
Note: The following lists are general safety instructions when working with lead-acid
batteries. Some of the safety considerations are not applicable to the sealed batteries provided
with the MS-2013 as those batteries are self-contained and cannot be opened, and they are
safer than automotive batteries that require servicing. Exercise caution, however, when
working with any lead-acid battery.
Personal Safety Precautions
 Someone should be within range of your voice or close enough to come to your aid
when you work near a lead-acid battery.
 Have plenty of fresh water and soap nearby in case battery acid contacts your skin,
clothing, or eyes.
 Wear complete eye protection and clothing protection. Avoid touching your eyes
while working near the battery.
 If battery acid does contact skin or clothing, wash immediately with soap and water.
If you get acid in your eye, immediately flood the eye with running cold water for at
least 10 minutes, and get medical attention immediately.