Frequently Asked Questions
What is the Crown 24HDC battery?
The Crown 24HDC is a 12VDC heavy duty commercial deep cycle flooded lead acid battery rated at 95Ah at the 20-hour rate. It is designed for applications that require repeated charging and discharging, including solar energy storage, backup power, RVs, marine equipment, and commercial systems.
Is the Crown 24HDC suitable for solar power systems?
Yes. The Crown 24HDC can be used in off-grid and other renewable energy systems that are designed for flooded lead acid batteries. It is particularly useful where a 12VDC battery and a compact Group 24 footprint fit the system requirements.
How much energy does the Crown 24HDC provide?
The Crown 24HDC is rated at 95Ah at 12VDC. The amount of energy actually available to a solar system will vary with discharge rate, temperature, battery condition, system losses, and depth of discharge.
Can the Crown 24HDC be used in a 24VDC or 48VDC solar battery bank?
Yes. Since the Crown 24HDC is a 12VDC battery, batteries can be connected in series to increase the system voltage.
- Two Crown 24HDC batteries in series create a 24VDC battery bank.
- Four Crown 24HDC batteries in series create a 48VDC battery bank.
Additional parallel strings can be used when more amp-hour capacity is needed, provided the battery bank, wiring, protection, charging equipment, and inverter are properly sized.
Charging & Maintenance
What type of charger should be used with the Crown 24HDC?
The Crown 24HDC should be charged with equipment designed for flooded lead acid batteries. For solar applications, the charge controller should be configured for the appropriate flooded battery charging profile and matched to the complete battery-bank voltage and capacity.
Does the Crown 24HDC require regular maintenance?
Yes. As a flooded lead acid battery, the Crown 24HDC requires periodic inspection and electrolyte maintenance. Keeping the battery properly charged and maintaining the electrolyte at the correct level are important parts of normal service.
What type of water should be used when servicing the Crown 24HDC?
Use distilled or de-mineralized water when adding water to a flooded lead acid battery. Tap water can contain minerals and other contaminants that may affect battery performance and service life.
How often should the Crown 24HDC be inspected?
Inspection frequency depends on cycling, charging conditions, temperature, and battery age. A regular inspection schedule is recommended so electrolyte levels, terminals, connections, and overall battery condition can be checked before problems develop.
Does the Crown 24HDC need ventilation?
Yes. Flooded lead acid batteries can release hydrogen gas during charging. The battery should be installed in a properly ventilated location and kept away from sparks, flames, and other ignition sources.
Crown Battery Comparison
How does the Crown 24HDC compare with the Crown 27HDC for solar?
The Crown 24HDC and Crown 27HDC are both 12VDC heavy-duty commercial deep cycle flooded lead acid batteries. The Crown 27HDC provides 115Ah compared with 95Ah for the Crown 24HDC, giving it more rated storage. The Crown 24HDC is the more compact option when a Group 24 footprint is preferred, while the Crown 27HDC is better suited when additional capacity is worth the larger battery size.
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Specification
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24HDC
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27HDC
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Voltage
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12VDC
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12VDC
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Capacity (20 Hr)
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95Ah
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115Ah
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Reserve Capacity
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140 min @ 25A
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180 min @ 25A
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Dimensions
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11.06 x 6.81 x 9.38 in (28.09 x 17.30 x 23.83 cm)
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12.95 x 6.81 x 9.38 in (32.89 x 17.30 x 23.83 cm)
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Weight
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50 lbs (22.7 kg)
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58 lbs (26.3 kg)
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Terminal Type
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Dual post/Stud combination
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Dual post/Stud combination
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What is the difference between the Crown 24HDC and Crown 31HDC?
The Crown 24HDC and Crown 31HDC are both 12VDC heavy-duty commercial deep cycle flooded batteries, but the Crown 31HDC provides greater capacity. The Crown 31HDC is rated at 130Ah at the 20-hour rate, compared with 95Ah for the Crown 24HDC. The 24HDC is more compact, while the 31HDC is intended for systems where additional battery capacity is more important than minimizing battery size.
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Specification
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24HDC
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31HDC
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Voltage
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12VDC
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12VDC
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Capacity (20 Hr)
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95Ah
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130Ah
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Reserve Capacity
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140 min @ 25A
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200 min @ 25A
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Dimensions
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11.06 x 6.81 x 9.38 in (28.09 x 17.30 x 23.83 cm)
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13.00 x 6.75 x 9.38 in (33.02 x 17.15 x 23.83 cm)
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Weight
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50 lbs (22.7 kg)
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65 lbs (29.5 kg)
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Terminal Type
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Dual post/Stud combination
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Dual post/Stud combination
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Solar Application & Battery Life
How deeply should the Crown 24HDC be discharged in a solar system?
Avoiding unnecessary deep discharges can help reduce battery stress and extend service life. For solar systems, battery-bank sizing should provide enough capacity to meet the expected load without routinely taking the battery to a very low state of charge.
How long can the Crown 24HDC last in a solar application?
There is no single service-life figure that applies to every installation. Battery life depends on depth of discharge, charging, temperature, maintenance, cycling frequency, and operating conditions. Proper system sizing and charging are important for getting the best service life from a flooded deep cycle battery.
Can the Crown 24HDC be used for an off-grid solar system?
Yes. The Crown 24HDC can be incorporated into an off-grid solar battery bank when the battery capacity, system voltage, solar array, charge controller, inverter, and expected loads are properly matched. Its 12VDC configuration also makes it useful for smaller DC-based systems.
Can the Crown 24HDC be used for RV and marine applications?
Yes. Its deep cycle design makes it suitable for applications that need sustained energy for accessories and equipment rather than only short starting bursts. It can be used in RV, marine, and other mobile power systems when the physical installation and electrical requirements are compatible.
What should I check if the Crown 24HDC is not holding a charge?
Check that the battery is being fully charged, inspect the terminals and cable connections, verify the electrolyte level, and review the charging settings. Excessive discharge, chronic undercharging, high operating temperatures, poor connections, and battery age can all contribute to reduced performance.
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