1. Introduction
This user manual provides essential information for the safe and effective use of your Raion Power 12V 18Ah Replacement AGM Battery. This battery is specifically designed as a direct replacement for the EverStart HP450-2 Maxx 500 amp Jump Starter battery. Please read this manual thoroughly before installation and operation to ensure optimal performance and longevity of your battery.
2. Safety Information and Warnings
WARNING: Failure to follow these safety instructions may result in fire, electric shock, or other injury or damage.
- This is a Non-Spillable Sealed Lead-Acid Battery (AGM Technology).
- Do not short the battery terminals. Accidental shorting can cause severe damage to the battery and pose a fire hazard.
- Do not charge in an airtight container. Ensure adequate ventilation during charging to prevent gas accumulation.
- Recharge immediately after use to maintain battery health and extend its lifespan.
- Do not disassemble or heat above 65°C (149°F). High temperatures can damage the battery and lead to hazardous conditions.
- This product contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm (Proposition 65 Warning).
- Must be recycled or disposed of properly. Do not dispose of batteries in household waste.
3. Product Features
- Direct Replacement: Specifically designed for the EverStart HP450-2 Maxx 500 amp Jump Starter.
- Advanced AGM Technology: Absorbed Glass Mat (AGM) technology ensures a maintenance-free operation, eliminating the need for water refilling.
- Durable Construction: Features a rugged, non-conductive ABS plastic casing that offers strong resistance to shock, vibration, chemicals, and heat.
- Voltage Matching: Batteries are voltage matched free of cost when more than one is ordered, ensuring increased performance and longevity.
- Reliable Performance: Designed for consistent power delivery and long service life.
4. Setup and Installation
The Raion Power 12V 18Ah battery is designed for straightforward replacement in your EverStart HP450-2 Maxx 500 amp Jump Starter. Please follow the installation instructions provided in the original EverStart HP450-2 Maxx 500 amp Jump Starter manual for precise steps.
- Ensure the jump starter is turned off and disconnected from any power source.
- Locate the existing battery compartment in your EverStart HP450-2 Maxx 500 amp Jump Starter.
- Carefully disconnect the existing battery terminals (negative first, then positive).
- Remove the old battery.
- Insert the new Raion Power 12V 18Ah battery into the compartment, ensuring correct orientation.
- Connect the battery terminals (positive first, then negative) using the existing cables and the provided nut and bolt set. Ensure connections are secure.
- Close the battery compartment.
- It is recommended to fully charge the new battery before its first use.

Image: Front view of the Raion Power 12V 18Ah Replacement AGM Battery, showing the terminals and product label.

Image: Top view of the Raion Power 12V 18Ah Replacement AGM Battery, highlighting the F1 terminals.
5. Operating Instructions
This AGM battery is designed for both cycle use and standby (float) use. Proper charging is crucial for battery longevity.
Charging Recommendations (at 25°C / 77°F):
- Constant Voltage Charge:
- Cycle Use: 14.40 - 14.70V
- Standby Use: 13.50 - 13.80V
- Initial Current: Less than 4.5A
- Recommended Maximum Charging Current: 5.4A
Always use a charger compatible with AGM batteries and ensure the charging voltage matches the recommended values to prevent overcharging or undercharging.
6. Maintenance
The Raion Power AGM battery is maintenance-free, meaning it does not require water additions. However, proper care and storage will maximize its lifespan.
- Regular Recharging: Recharge the battery immediately after each use, especially after deep discharges.
- Storage: If storing the battery for extended periods, ensure it is fully charged. Store in a cool, dry place. Recharge every 6 to 9 months if not in use to prevent self-discharge.
- Clean Terminals: Keep battery terminals clean and free of corrosion. Use a wire brush if necessary and ensure connections are tight.
- Temperature: Avoid exposing the battery to extreme temperatures for prolonged periods, as this can affect performance and lifespan.
Self-Discharge Characteristics (at 25°C / 77°F):
- 1 Month: 92% capacity remaining
- 3 Months: 84% capacity remaining
- 6 Months: 72% capacity remaining
- 12 Months: 64% capacity remaining
For optimal longevity, it is recommended to recharge the battery if it has been stored for more than 6 months without use.
7. Troubleshooting
If you encounter issues with your Raion Power battery, consider the following common troubleshooting steps:
- Battery Not Holding Charge:
- Ensure the charger is functioning correctly and is compatible with AGM batteries.
- Verify that the charging voltage and current are within the recommended specifications.
- Check for loose or corroded terminal connections.
- The battery may have reached the end of its service life if it's old and has been deeply discharged frequently.
- Low Voltage Output:
- Ensure the battery is fully charged.
- Check all connections for tightness and cleanliness.
- Verify the load connected to the battery is not exceeding its capacity.
- Battery Overheating During Charge:
- Immediately disconnect the charger.
- Ensure the charging current is not exceeding the maximum recommended value (4.5A initial, 5.4A max).
- Verify the ambient temperature is within the operating range.
- Ensure adequate ventilation around the battery during charging.
If problems persist, please refer to the support section or contact Raion Power customer service.
8. Specifications
Detailed technical specifications for the Raion Power 12V 18Ah Replacement AGM Battery.
| Attribute | Value |
|---|
| Nominal Voltage | 12V |
| Nominal Capacity (20HR) | 18Ah |
| Product Dimensions (L x W x H) | 7.13 x 3.03 x 6.57 inches (181 x 77 x 167 mm) |
| Item Weight | 14.02 pounds (Approx. 6.36 kg) |
| Internal Resistance | Approx. 9 mΩ |
| Terminal Type | F1 Terminal (FP terminals) |
| Operating Temperature Range (Discharge) | -15°C to 50°C (5°F to 122°F) |
| Operating Temperature Range (Charge) | -15°C to 40°C (5°F to 104°F) |
| Operating Temperature Range (Storage) | -15°C to 40°C (5°F to 104°F) |
| Nominal Operating Temperature Range | 25°C ± 3°C (77°F ± 5°F) |
| Float Charging Voltage (25°C) | 13.5 to 13.8 VDC/unit |
| Recommended Maximum Charging Current | 5.4A |
| Cycle Use Voltage (25°C) | 14.4 to 14.7 VDC/unit |
| Manufacturer | Raion Group |
| Item Model Number | RG121280FP_1_JMP1040 |
| ASIN | B09D43QMPR |

Image: Detailed specification sheet for the RG12180FP battery, including dimensions and discharge characteristics.

Image: Additional specification sheet for the RG12180FP battery, showing performance graphs like capacity retention, cycle life, and charging procedures.
9. Warranty and Support
For warranty information and customer support, please contact Raion Group, the manufacturer of this battery. Details regarding specific warranty periods and terms can often be found on the product's purchase page or by contacting the seller directly.
For further assistance or inquiries, please visit the product page on Amazon or contact Raion Group customer service: