Daktronics MS-2013 Portable LED Scoreboard - Manual (Page 19)

Battery Care & Charging 13
Operation
If the ChargePro encounters a DC overload (excessive demand), it will reduce its output
voltage to a safe level to prevent damage. If the positive and negative connectors are touched
together, creating a short, the charger will instantly reduce its output voltage to nearly 0 V.
When the overload is removed, the charger automatically resumes normal operation.
If the in-line 10 A, 32 VDC fuse in either cable blows due to improper connection to a battery,
replace the fuse with an identical 10 A fuse only (Daktronics part # F-1006). Never replace a
blown fuse with a higher-value fuse.
The charger is waterproof, but the AC plug and DC bolt-type connectors should be kept dry.
It is normal for the charger to become warm during operation; consequently, it should not
contact any surface other than the scoreboard cabinet.
Charger Troubleshooting Table
Problem Cause Solution
The charger does not seem
to be charging.

One or more defective/
damaged cells

One or more loose wire
connections

Charger has reduced its
output voltage due to a DC
overload or a DC short.

The internal AGX 15 A DC
output fuse has blown.

Test batteries and
replace if necessary
(see Section 6.5).

Check and tighten all
connections.

Remove the source of
the overload or short.

Contact Daktronics
Customer Service for
replacement.
It seems to take a long time
to recharge the batteries in
hot weather.

The charger has
overheated due to poor air
circulation and has
reduced its output.

Consider moving the
scoreboard to a shaded
location.
The red LED is always on.
or
The green LED never
comes on.

A dead short or an
overload

One or more bad cells in
battery

Too many batteries, or
battery is too large

A heavy DC load on the
battery while charging
Perform charger test:
1. Unplug the AC cord.
2. Remove the black
charger output wire
from the battery.
3. When AC power is
reapplied, only the
green LED should turn
on. If not, replace the
charger.
The green LED says on, but
the batteries do not charge.

Check charger's output
fuses.

If connections are
good, contact
Daktronics Customer
Service for
replacement.
Both the red and green
LEDs stay on all the time.

The battery is damaged or
unable to reach full charge.

Check electrolyte. Test/
replace the battery (see
Section 6.5).