1. Introduction
This manual provides essential instructions for the safe and effective use of your SigmasTek FP1223 12 Volt 2.9 AmpH Sealed Lead Acid (SLA) Replacement Battery. This battery is designed for various applications requiring reliable 12V power, including UPS systems, emergency lighting, security systems, scooters, and wheelchairs. Please read this manual thoroughly before installation and operation.
The SigmasTek FP1223 is compatible with models such as RB1229, PS-1229, FG20201, CP12-2.6, and BT2.9-12.
2. Setup and Installation
2.1 Initial Inspection
Upon receiving your battery, inspect it for any signs of physical damage. If damage is observed, do not proceed with installation and contact your supplier.
2.2 Safety Precautions
- Always wear appropriate personal protective equipment, including safety glasses and gloves, when handling batteries.
- Avoid short-circuiting the battery terminals.
- Do not expose the battery to open flames or excessive heat.
- Ensure proper ventilation during charging and operation.
2.3 Installation Steps
- Identify the positive (+) and negative (-) terminals on both the new battery and the device it will power. The SigmasTek FP1223 features F1 terminals.
- Ensure the device is powered off and disconnected from any power source before installation.
- Connect the positive terminal of the battery to the positive terminal of the device.
- Connect the negative terminal of the battery to the negative terminal of the device.
- Secure all connections firmly to prevent loose contacts.
3. Operating Instructions
The SigmasTek FP1223 is a rechargeable sealed lead-acid battery designed for reliable power delivery.

Image: SigmasTek FP1223 12 Volt 2.9 AmpH Sealed Lead Acid (SLA) battery. The battery is rectangular, white with a black top, and features F1 terminals on the top. Text on the battery casing indicates it is a 'Rechargeable Sealed Lead-Acid Battery (12V2.9AH/T1)' and provides 'CHARGING INSTRUCTION' details: 'Floating use: 13.5-13.8V', 'Cycle use: 14.4-15.0V', 'Initial current: max 0.87A'. Recycling symbols and a UL certification mark are also visible.
3.1 Charging Instructions
For optimal performance and longevity, adhere to the following charging parameters:
- Floating Use: 13.5 - 13.8 Volts
- Cycle Use: 14.4 - 15.0 Volts
- Initial Current: Maximum 0.87 Amperes
Use a charger specifically designed for 12V Sealed Lead Acid batteries that matches these specifications. Overcharging or undercharging can reduce battery life.
3.2 General Usage
Ensure the battery is used within its specified temperature range. Extreme temperatures can affect performance and lifespan. Avoid deep discharges whenever possible to prolong battery life.
4. Maintenance
4.1 Regular Inspection
Periodically inspect the battery for any signs of swelling, cracks, or corrosion on the terminals. Clean any corrosion with a wire brush and a solution of baking soda and water, then rinse with clean water and dry thoroughly.
4.2 Cleaning
Keep the battery casing clean and free of dust and debris. Use a dry cloth for cleaning. Do not use solvents or harsh chemicals.
4.3 Storage
If the battery will not be used for an extended period, store it in a cool, dry place. Ensure the battery is fully charged before storage and recharge it every 3-6 months to prevent self-discharge and maintain capacity.
5. Troubleshooting
5.1 Battery Not Holding Charge
- Verify that the charger is functioning correctly and meets the specified voltage and current requirements.
- Check all connections for looseness or corrosion.
- Ensure the battery has not been subjected to extreme temperatures or deep discharges repeatedly.
5.2 Device Not Powering On
- Confirm the battery is fully charged.
- Inspect battery terminals and device connections for proper contact.
- Test the battery voltage with a multimeter to ensure it is within the expected range (approximately 12V when fully charged).
If issues persist after troubleshooting, consult the device's manual or contact customer support.
6. Specifications
| Feature | Specification |
|---|---|
| Model Number | SP12-2.9 |
| Voltage | 12 Volts |
| Capacity | 2.9 Ampere-Hours (AmpH) |
| Battery Cell Composition | Sealed Lead Acid (SLA) |
| Terminal Type | F1 |
| Product Dimensions (L x W x H) | 7 x 1.38 x 2.36 inches |
| Item Weight | 2.3 pounds |
| Recommended Uses | Emergency Lighting, Scooters, UPS, Wheelchairs |
7. Warranty and Support
This SigmasTek battery typically includes a manufacturer's warranty. Please refer to your purchase documentation or contact your retailer for specific warranty terms and conditions. For technical support or further assistance, please contact SigmasTek customer service or your product supplier.





