Crown CR-GC155 155Ah 12VDC Deep Cycle Flooded Lead Acid Battery

Frequently Asked Questions

What is the Crown CR-GC155 battery?
The Crown CR-GC155 is a 12VDC deep cycle flooded lead acid battery rated at 155Ah at the 20-hour rate. It is designed for repeated charge and discharge cycles and can be used for solar energy storage, RVs, marine equipment, golf carts, floor equipment, and other deep cycle applications.

What type of solar system is the Crown CR-GC155 best suited for?
The Crown CR-GC155 is well suited for off-grid and backup solar systems that use flooded lead acid battery technology. It can be used in remote power systems and other installations where proper charging, ventilation, electrolyte maintenance, and battery access are available.

How much energy does the Crown CR-GC155 store?
The Crown CR-GC155 is rated at 155Ah at the 20-hour rate and provides 1.98 kWh of rated storage based on Crown's published specifications. Actual usable energy depends on discharge rate, temperature, battery condition, system losses, and the depth of discharge used by the system.

What is the reserve capacity of the Crown CR-GC155?

• 75 minutes at a 75-amp discharge rate
• 110 minutes at a 56-amp discharge rate
• 286 minutes at a 25-amp discharge rate

Reserve capacity changes with the discharge rate and should be considered when planning backup power requirements.

Can the Crown CR-GC155 be used in a 24VDC or 48VDC solar system?
Yes. Matching Crown CR-GC155 batteries can be connected in series to increase the battery-bank voltage. Two batteries connected in series provide a 24VDC nominal battery bank, while four batteries connected in series provide a 48VDC nominal battery bank.

Charging & Maintenance

How should the Crown CR-GC155 be charged in a solar system?
The Crown CR-GC155 should be charged with a solar charge controller configured for a flooded lead acid battery. Charging settings should follow Crown's recommended requirements and match the complete battery-bank configuration. Proper charging helps reduce the risk of chronic undercharging or overcharging.

Does the Crown CR-GC155 require watering?
Yes. The CR-GC155 is a flooded lead acid battery and requires periodic electrolyte inspection and watering. Use distilled or de-mineralized water and maintain the electrolyte at the correct level. Follow proper battery safety procedures whenever servicing the battery.

How often should the Crown CR-GC155 be inspected?
Inspection frequency depends on charging settings, cycling frequency, temperature, battery age, and operating conditions. Regular inspections help determine how quickly electrolyte levels change and allow the maintenance schedule to be adjusted for the installation.

Can tap water be used in the Crown CR-GC155?
No. Distilled or de-mineralized water should be used when maintaining the electrolyte. Minerals and impurities found in ordinary tap water can contaminate the electrolyte and negatively affect battery performance and service life.

Does the Crown CR-GC155 require ventilation?
Yes. Flooded lead acid batteries can release hydrogen gas during charging. The Crown CR-GC155 should be installed in a properly ventilated location and kept away from flames, sparks, cigarettes, and other ignition sources.

Crown Battery Comparison

How does the Crown CR-GC155 compare with the Crown CR-GC150?
The Crown CR-GC155 and Crown CR-GC150 are both 12VDC deep cycle flooded lead acid batteries with the same listed dimensions and GC12 profile. The CR-GC155 provides 155Ah compared with 150Ah for the CR-GC150, while the CR-GC155 also has higher published reserve capacity and weighs more.

Which Crown battery should I choose between the Crown CR-GC150 and Crown CR-GC155?
The Crown CR-GC155 is the better option when the additional 5Ah of rated capacity and higher reserve capacity are useful for the application. The Crown CR-GC150 may be preferable when slightly lower battery weight is more important than the additional capacity.

How does the Crown CR-GC155 compare with the Crown 31HDC?
The Crown CR-GC155 and Crown 31HDC are both 12VDC flooded lead acid deep cycle batteries. The CR-GC155 provides 155Ah at the 20-hour rate compared with 130Ah for the 31HDC, giving it higher rated energy storage. The 31HDC is lighter and has a different physical profile.

Solar Application & Battery Life

What depth of discharge is recommended for the Crown CR-GC155 in a solar system?
Avoiding unnecessary deep discharges can help reduce battery stress and support longer service life. The appropriate operating depth depends on daily energy use, charging capability, cycling frequency, system design, and the desired service life of the battery bank.

Can Crown CR-GC155 batteries be connected in series or parallel?
Yes. Matching Crown CR-GC155 batteries can be connected in series to increase system voltage or in parallel to increase total amp-hour capacity. The complete battery bank should use properly sized cables, protection, and connections and must be compatible with the charge controller and inverter.

Can the Crown CR-GC155 be used for RV and marine applications?
Yes. The Crown CR-GC155 can be used in RV and marine applications that require deep cycle power. The installation should protect the battery from excessive vibration, moisture, extreme temperatures, and incorrect charging.

Can the Crown CR-GC155 be installed on its side?
No. The Crown CR-GC155 is a flooded lead acid battery containing liquid electrolyte and should be installed upright. Upright installation also allows proper inspection, watering, and routine maintenance.

What should I check if my Crown CR-GC155 is not holding a charge?
Check the solar charge controller settings, charging source, battery connections, terminal condition, electrolyte level, and recent discharge history. Persistent undercharging can cause performance problems. If the charging system is working correctly and the battery continues to perform poorly, professional battery testing may be appropriate.