Daktronics MS-2013 Portable LED Scoreboard - Manual (Page 17)

Battery Care & Charging 11
Section 5: Battery Care & Charging
This section describes care and operation of the MS-2013 on-board battery charging system.
5.1 On-Board Charger
Reference Drawing:
Electrical Specifications. MS-2013 ........................................................................ A-159887
On a full charge, the two internal batteries provide enough power for approximately 14 hours
of normal operation. Keeping the batteries charged will help extend their life. Be sure that the
batteries are fully charged before storing the scoreboard during the off-season; storing the
scoreboard with a discharged battery can contribute to early battery failure. Daktronics
recommends keeping the scoreboard plugged in to a 120 VAC receptacle during storage.
The Guest
® ChargePro on-board battery charger is designed both to recharge the batteries of
the scoreboards and to extend battery life in applications where scoreboard and batteries are
stored for long periods of time. The charger is located in the cabinet interior, attached to the
right side of the scoreboard back sheet (as viewed with the rear access panel open). The
charger is connected to the transformer next to the driver enclosure, and to the batteries.
Refer to Drawing A-159887 in Appendix A.
The charger, shown in Figure 8, is fully automatic and can
be connected to the twin 12 V lead-acid batteries
indefinitely without risk of overcharging. The 28 A/H
batteries provided with the scoreboard will typically be
fully recharged after about 12 hours.
The ChargePro is a three-stage, "smart" charger, and its
regulated output recharges the battery in the safest, fastest
way possible. Once a battery has been recharged, the
ChargePro supplies just enough electricity to compensate
for the charge a battery loses during storage. Unlike most
automotive "trickle" chargers, the unit will not boil off the
electrolyte in a lead-acid battery when left unattended.
Charger Power Specifications
Outputs: two individual isolated outputs with
a combined rating as follows:

When charging:

When maintaining

6 A at 12 VDC

0.1 A at 13.3 VDC
Maximum recommended battery size:

For recharging:

Maintenance only

Up to 150 A/H

Up to 350 A/H
Input:

Rated AC voltage

Current draw

100-140 VAC, 50-60 Hz

1.6 A at full output
Figure 8: ChargePro Charger