Crown 12CRV230 230Ah 12VDC Maintenance Free AGM Battery

Frequently Asked Questions

What type of battery is the Crown 12CRV230?
The Crown 12CRV230 is a 12VDC deep cycle AGM battery with a rated capacity of 230Ah at the 20-hour rate. AGM technology uses an absorbed glass mat separator to hold the electrolyte within the battery, providing a sealed and maintenance-free design.

Is the Crown 12CRV230 suitable for off-grid solar?
Yes. The Crown 12CRV230 is designed for deep cycle use and is well suited to off-grid solar and renewable energy storage applications. Its sealed AGM construction is especially useful when a system requires low routine maintenance.

How much energy can the Crown 12CRV230 store?
The Crown 12CRV230 is rated at 230Ah and 12VDC, with Crown listing 2.68 kWh of storage at the 20-hour rate. Crown also lists 255Ah and 2.97 kWh at the 100-hour rate. Actual usable energy depends on discharge rate, temperature, battery age, system design, and the selected depth of discharge.

How many Crown 12CRV230 batteries are needed for a 24V or 48V solar system?
The number depends on the system voltage and the required storage capacity. For voltage matching:

• Two Crown 12CRV230 batteries in series create a 24VDC battery bank.
• Four Crown 12CRV230 batteries in series create a 48VDC battery bank.

Additional parallel strings can increase the total amp-hour capacity while maintaining the same system voltage. Battery-bank sizing should also consider daily energy consumption, solar production, inverter efficiency, backup requirements, and allowable depth of discharge.

What applications are suitable for the Crown 12CRV230?
The Crown 12CRV230 can be used for off-grid solar, renewable energy storage, backup power, remote power systems, RVs, marine applications, and other equipment requiring a deep cycle 12VDC battery. Crown identifies its CRV AGM batteries as suitable for renewable energy applications.

Charging & Maintenance

How should the Crown 12CRV230 be charged in a solar system?
The Crown 12CRV230 should be charged with a solar charge controller configured for AGM or sealed lead acid batteries. The controller settings should follow Crown's recommended charging requirements and the battery-bank manufacturer's specifications. Correct charging is important because chronic undercharging and excessive charging can reduce battery performance and service life.

Does the Crown 12CRV230 require watering?
No. The Crown 12CRV230 is a sealed AGM battery, so it does not require the routine electrolyte watering associated with flooded lead acid batteries. The battery should not be opened to add water.

Is the Crown 12CRV230 maintenance free?
Yes. Its sealed AGM construction is designed for maintenance-free operation under normal conditions. Although watering is not required, the battery bank should still be inspected for proper connections, physical damage, charging performance, and operating conditions.

Does the Crown 12CRV230 need ventilation?
The sealed AGM design greatly reduces the normal maintenance and electrolyte exposure associated with flooded batteries. However, lead acid batteries should still be installed according to applicable safety requirements and manufacturer recommendations, with suitable ventilation and protection from excessive heat, sparks, and ignition sources.

Can the Crown 12CRV230 be deeply discharged regularly?
It is designed for deep cycle applications, but routinely using a battery to very low states of charge can shorten service life. For solar storage, properly sizing the battery bank and avoiding unnecessary deep discharges can help improve long-term performance.

Crown Battery Comparison

What is the difference between the Crown 12CRV230 and Crown 12CRV135?
The Crown 12CRV135 and 12CRV230 are both 12VDC deep cycle AGM batteries, but the 12CRV230 provides substantially more storage capacity. The 12CRV135 is rated at 135Ah at the 20-hour rate, while the 12CRV230 is rated at 230Ah. The 12CRV230 is therefore better suited to solar systems requiring greater energy storage, while the 12CRV135 may be more appropriate where a smaller battery is sufficient.

How does the Crown 12CRV230 compare with the Crown 12CRV8D?
The Crown 12CRV8D provides 240Ah at the 20-hour rate, compared with 230Ah for the 12CRV230. Both are 12VDC AGM deep cycle batteries, but the 12CRV8D offers slightly higher rated capacity, while the 12CRV230 has a smaller physical footprint and lower weight. The better choice depends on the available installation space and the storage capacity required.

Solar Application & Battery Life

What are the advantages of using the Crown 12CRV230 in a solar battery bank?
The 12CRV230 combines a 12VDC configuration with 230Ah of 20-hour capacity, making it useful for building larger battery banks without requiring as many individual batteries as lower-capacity models. Its sealed AGM construction also avoids routine watering and is well suited to installations where reduced maintenance is important.

Can Crown 12CRV230 batteries be connected in parallel?
Yes. Batteries of the same voltage and appropriate model should be connected in parallel when additional amp-hour capacity is required. Proper cable sizing, equal current paths, battery matching, and appropriate overcurrent protection are important when designing a parallel battery bank.

Can the Crown 12CRV230 be used with an inverter?
Yes. A 12VDC inverter can be used with a Crown 12CRV230 battery bank when the inverter's DC input voltage and power requirements match the battery system. The inverter's expected current draw should be considered carefully because high loads can significantly increase battery discharge current.

How should the Crown 12CRV230 be stored when it is not being used?
Store the battery in a clean, dry location away from excessive heat and keep it in an appropriately charged condition. AGM batteries can gradually lose charge while sitting unused, so periodic voltage checks and charging may be necessary during extended storage.

What can reduce the service life of a Crown 12CRV230 in a solar system?
Excessive depth of discharge, chronic undercharging, improper charging settings, high operating temperatures, prolonged storage in a discharged condition, and poor electrical connections can all negatively affect battery performance and service life. Correct system sizing and charge-controller configuration are important for getting the most from the battery.