Daktronics MS-2113, Manual

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Battery Care & Charging
9
5 Battery Care & Charging
This section describes care and operation of the on-board battery charging system.
On-Board Charger
Reference Drawing:
Electrical Specifications- MS-2113 .................................................................. DWG-3275249
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 display during the off-season;
storing the display with a discharged battery can contribute to early battery failure. Keep
the display plugged in to a 120 VAC receptacle during storage.
The Marinco ChargePro model 28210 on-board battery charger is designed both to
recharge the batteries of the displays and to extend battery life in applications where
display and batteries are stored for long periods of time. The charger is located in the
cabinet interior, attached to the right wall (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 DWG-3275249 in Appendix A .
Charger Power Specifications
Outputs: two individual isolated outputs with a combined rating as follows:
• When bulk charging: 8–10.5 A at 14.3 VDC
• When absorption charging: 3–10 A at 14.3 VDC
•
When float charging: 0–3 A at 13.3 VDC
Maximum recommended battery size:
• For recharging: Up to 120 A/H
Input:
• Rated AC voltage: 100–240 VAC, 50–60 Hz
• Current draw: 2.5 A at full output
The ChargePro 28210 charger ( Figure 6 ), is a 2 bank, 10
A, 12/24 VDC output charger with a wide input range
of 100-240 VAC. It is microprocessor controlled and
has a maintenance mode that will keep the batteries
fully charged. The charger 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 display will typically be fully
recharged after about 12 hours.
The ChargePro 28210 charger is a four-stage, “smart”
charger with “Sense Send” technology that senses
the power needs of each battery and sends the
correct charge regardless of Serial or Parallel output
connections. If the batteries have discharged
unequally, the charger will send more power to the
battery that needs it, resulting in faster charging.
Figure 6: ChargePro Charger