SigmasTek SP12-7.5HR (12V 7.5Ah) Replacement Battery for Bruno SRE-2700 Stairlift

1. Product Overview

This manual provides essential instructions for the safe and effective use, installation, and maintenance of your SigmasTek SP12-7.5HR replacement battery. This battery is specifically designed to be 100% compatible with Bruno SRE-2700 stairlift systems, offering a reliable power source.

Image 1.1: The SigmasTek SP12-7.5HR 12V 7.5Ah Sealed Lead-Acid Battery. This image displays the rectangular battery unit with its terminals on top. The label on the side indicates "SigmasTek SP12-7.5HR (12V7.5AH/T2) Rechargeable Sealed Lead-Acid Battery" along with charging instructions and safety symbols.

The SigmasTek SP12-7.5HR is a 12-volt, 7.5 AmpH rechargeable Sealed Lead-Acid (SLA) battery featuring Absorbent Glass Mat (AGM) technology. It is engineered for maintenance-free operation and spill-proof construction, ensuring safety and longevity.

2. Safety Information

Please read and understand all safety precautions before handling, installing, or operating the battery. Failure to follow these instructions may result in injury or damage.

• General Handling: Always wear appropriate personal protective equipment, including safety glasses and gloves, when handling batteries.
• Ventilation: Although sealed, ensure adequate ventilation during charging to prevent gas accumulation.
• Short Circuits: Avoid short-circuiting the battery terminals. Do not place metal objects on top of the battery.
• Heat: Do not expose the battery to excessive heat, open flames, or direct sunlight.
• Disposal: This battery contains lead (Pb) and must be recycled or disposed of properly according to local regulations. Do not dispose of in household waste. The battery is marked with the crossed-out wheeled bin symbol, indicating separate collection is required.
• Certifications: The battery is U.L. Recognized and CE Certified, indicating compliance with safety and quality standards.

3. Product Features

The SigmasTek SP12-7.5HR battery incorporates advanced technology for reliable performance:

• Absorbent Glass Mat (AGM) Technology: This design allows the electrolyte to be suspended in fiberglass mats, making the battery spill-proof and maintenance-free.
• Maintenance-Free Design: No need to check electrolyte levels or add water.
• Spill-Proof Construction: Ensures safe operation in various orientations without leakage.
• High Capacity: Provides 12 Volts and 7.5 AmpH for sustained power delivery.
• Durability: Designed for long service life and consistent performance.

4. Setup and Installation

This battery is a direct replacement for the Bruno SRE-2700 stairlift battery. Installation typically involves replacing the existing battery unit.

1. Preparation: Ensure the stairlift system is powered off and disconnected from any charging source before beginning installation.
2. Access: Locate and access the existing battery compartment in your Bruno SRE-2700 stairlift. Refer to your stairlift's specific manual for exact location and access procedures.
3. Disconnect Old Battery: Carefully disconnect the negative (-) terminal first, then the positive (+) terminal from the old battery. Note the orientation of the terminals.
4. Reuse Wire Harness: The SigmasTek replacement battery does not include a new wire harness. You must reuse the original wire harness from your Bruno SRE-2700 battery.
5. Remove Old Battery: Carefully remove the old battery from its compartment.
6. Install New Battery: Place the new SigmasTek SP12-7.5HR battery into the compartment, ensuring proper orientation.
7. Connect New Battery: Connect the positive (+) terminal first, then the negative (-) terminal, ensuring a secure connection. Double-check all connections for tightness.
8. Secure Compartment: Close and secure the battery compartment.
9. Initial Charging: After installation, connect the stairlift to its charging source to allow the new battery to fully charge before initial use.

Charging Instructions (from battery label):

• Floating Use: 13.5 ~ 13.8V
• Cycle Use: 14.4 ~ 15.0V
• Initial Current: Less than 2.1A

If you are unsure about any step, it is recommended to consult a qualified technician for installation.

5. Operation

Once properly installed and charged, the SigmasTek SP12-7.5HR battery will power your Bruno SRE-2700 stairlift system. The stairlift's charging system will manage the battery's charge cycles during normal operation.

• Normal Use: The battery provides power to the stairlift. Ensure the stairlift is regularly connected to its charging station when not in use to maintain optimal battery life.
• Charging: The battery is designed to be continuously charged in a float application (like a stairlift) or cycled. Adhere to the charging parameters specified on the battery label and by your stairlift manufacturer.

6. Maintenance

The SigmasTek SP12-7.5HR is a maintenance-free battery, meaning it does not require water additions or electrolyte checks. However, some general care practices can help ensure its longevity:

• Keep Clean: Periodically inspect the battery and terminals for dirt, dust, or corrosion. Clean with a dry cloth. Do not use solvents or harsh chemicals.
• Terminal Connections: Ensure terminal connections remain tight. Loose connections can lead to poor performance or overheating.
• Temperature: Operate and store the battery within recommended temperature ranges. Extreme temperatures can reduce battery life.
• Storage: If storing the battery for an extended period, ensure it is fully charged and store it in a cool, dry place. Recharge periodically (every 3-6 months) to prevent deep discharge.

7. Troubleshooting

If you experience issues with your stairlift's power, consider the following basic troubleshooting steps related to the battery:

• No Power/Low Power:
  • Verify that the stairlift is properly connected to its charging station.
  • Check all battery terminal connections for tightness and corrosion.
  • Allow sufficient time for the battery to charge.
• Battery Not Charging:
  • Ensure the charging source (e.g., wall outlet, stairlift charger) is functional.
  • Inspect the charging cables for damage.

If problems persist after these checks, consult your stairlift's user manual or contact a qualified service technician.

8. Specifications

9. Warranty and Support

Your SigmasTek SP12-7.5HR replacement battery comes with a 1-Year Warranty from the date of purchase. This warranty covers manufacturing defects and ensures the battery is free from defects in material and workmanship under normal use.

For warranty claims, technical support, or any questions regarding your battery, please contact the seller or SigmasTek customer service directly. Please have your purchase information and battery model number available when contacting support.

For more information, you may visit the official SigmasTek website: www.sigmastek.com