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SigmasTek  |  SKU: BW-12615

Sonnenschein A51265S Compatible Replacement Battery

Sale price $22.21 USD Regular price $25.82
Shipping calculated at checkout.

➤ Meets or exceeds OEM Sonnenschein A51265S battery specifications

➤ Uses Absorbent Glass Mat (AGM) technology for reliable performance

➤ Maintenance-free and spill-proof design for safety and convenience

➤ U.L. Recognized and CE Certified for quality assurance

➤ Includes a 1-year warranty for peace of mind


📦🚀 FAST SHIPPING: Usually ships same day if ordered before 2 PM EST

⚠️ Quick Reminder

🔹 Please ensure the original battery model number is listed in our product description and that your device model number matches for compatibility.
🔹 We only supply the batteries shown in the images. Device images are provided for reference only.

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Battery Care Guide

Battery Usage and Maintenance Guidelines 🔋

Please read the following instructions carefully before using your new battery. Proper adherence will help ensure optimal performance and extended service life.

1. Cordless Phones, PDAs, and Power Tools (NiMH, NiCd, Lithium-Ion) 📱

Initial Charge

  • Fully charge the battery overnight prior to first use.

Conditioning (First 2–6 Charge Cycles)

  • Operate the device until the battery reaches approximately 20% capacity.
  • Avoid premature recharging.
  • Do not allow the battery to fully discharge during the initial cycles.

Post-Conditioning

  • Recharge the battery only when necessary.
  • These batteries are capable of approximately 500 charge cycles:
  • Once daily → ~500 days
    Twice daily → ~250 days
    Note: Even a partial recharge is considered a full cycle.

2. Sealed Lead Acid (SLA) Batteries 💡

  • No conditioning required.
  • Maintain the battery in a fully charged state; avoid complete discharge.
  • Capable of 300–400 charge cycles.
  • Expected service life: 2–3 years, depending on usage conditions.

3. Laptop Batteries (Lithium-Ion) 💻

Initial Charge

  • Fully charge the battery overnight prior to first use.

Conditioning (First 2–6 Charge Cycles)

  • Charge fully, then discharge to approximately 20% capacity.
  • Avoid complete discharge, as some devices may not detect a fully drained battery.

Post-Conditioning

  • Minimize frequent plugging and unplugging.
  • Allow the battery to discharge moderately at least once per month to maintain optimal performance.
  • Occasional cycling is recommended to sustain battery health.

Professional Recommendation

Adhering to these guidelines will enhance battery longevity and ensure reliable performance.

For further assistance regarding your battery or order, our customer support team is available to provide guidance.

Delivery and Shipping

Everything You Need to Know About Shipping with BatteryWeb (USA)

We know reliable delivery matters when you need power fast. Here’s how BatteryWeb makes shipping easy across the USA:

🚚 Shipping & Delivery

Most orders ship next business day (some products like sealed lead acid may take a little longer).

Same-day shipping available if you order before 11:59 AM (delivery depends on the carrier).

We ship nationwide using FedEx, UPS, USPS, DHL, and regional ground carriers.

Shipping costs are calculated automatically at checkout based on weight, distance, and carrier.

Transit times shown are estimates only (business days, no weekends/holidays).

🌍 Shipping Restrictions

Lithium batteries cannot be shipped by USPS or air. They must go via FedEx Ground, UPS Ground, or DHL Ground.

PO Box deliveries are only available via USPS.

At this time, we do not ship lithium batteries to Puerto Rico. NiMH, NiCd, and Alkaline can be shipped.

📦 Important Notes

Double-check your shipping address! If an incorrect address is used and the order is returned, re-shipping costs are the buyer’s responsibility.

If a product is temporarily out of stock, we’ll notify you right away with the expected restock date—or issue a refund if you prefer.

💲 Currency & Pricing

All prices are shown in USD.

Orders shipped outside the USA may be subject to local taxes, customs fees, or import duties. These are the buyer’s responsibility.

⚡ At BatteryWeb, we’re committed to getting your batteries delivered quickly, safely, and affordably—so you’ll always have the power you need, when you need it.

Disclaimer

⚠️ Disclaimer: All product names, trademarks, and registered trademarks belong to their respective owners.

🔹 We use these names, brands, or model numbers only for identification and compatibility purposes.

🔹 Our products are generic replacement parts and are not affiliated with, endorsed by, or manufactured by the original equipment manufacturers (OEMs).


Volts & Amps

12 Volts | 7.5 Ah

Terminal Type

F2

Sonnenschein A51265S Replacement Battery — Compatible with Sonnenschein A51265S

Upgrade your emergency lighting system with this replacement battery designed for the Sonnenschein A51265S. Built to meet or exceed OEM SLA battery specifications, this replacement battery delivers reliable performance and dependable power when you need it most. With Absorbent Glass Mat (AGM) technology and a maintenance-free, spill-proof design, the Sonnenschein A51265S replacement provides consistent output for emergency lighting, UPS systems, and standby applications. If you're searching for a high-performance battery that offers 100% compatibility with the Sonnenschein A51265S model, this long-lasting battery is an ideal choice.

Key Specifications

  • Model: Sonnenschein A51265S (Replacement)
  • Replacement Brand: SigmasTek
  • Battery Type: Rechargeable Sealed-Lead-Acid (SLA)
  • Technology: Absorbent Glass Mat (AGM)
  • Voltage: 12 Volts
  • Capacity: 7.5 Ah
  • Terminal Type: F2
  • Design: Maintenance-Free, Spill Proof Construction
  • Certifications: U.L. Recognized and CE Certified
  • Condition: Brand New, Factory Fresh
  • Warranty: 1 Year Warranty

Benefits

This Sonnenschein A51265S replacement battery offers a durable, long-lasting battery solution suitable for critical power needs. AGM technology provides low internal resistance, excellent charge acceptance, and improved vibration resistance for enhanced durability in demanding environments. The maintenance-free, spill-proof construction ensures safe and hassle-free installation and operation — perfect for commercial emergency lighting and frequently accessed battery compartments.

As a high-performance battery for emergency systems, this unit maintains steady voltage under load and offers reliable standby power for emergency lighting, exit signs, UPS backup systems, and other standby power applications. The U.L. recognition and CE certification confirm safety and compliance for both domestic and international installations. Whether you need a replacement battery for building safety equipment or a dependable power source for monitoring and alarm systems, this model delivers consistent performance.

Designed for easy, drop-in replacement, this Sonnenschein A51265S replacement battery helps extend the service life of your equipment while minimizing downtime. Backed by a 1 year warranty and shipped brand new and factory fresh, it’s a practical choice for technicians, facility managers, and safety professionals seeking a reliable, long-lasting battery option.

Ready to restore full power and reliability to your Sonnenschein A51265S system? Add this high-performance replacement battery to your cart now and ensure uninterrupted emergency operation.

Sonnenschein A512/6.5SR Replacement Battery — Compatible with Sonnenschein A512/6.5SR

Keep your emergency lighting and standby systems running smoothly with this replacement battery designed for the Sonnenschein A512/6.5SR. Engineered to meet or exceed OEM SLA battery specifications, this replacement battery combines proven AGM technology with a maintenance-free, spill-proof build to deliver reliable, high-performance power. If you need a long-lasting battery that guarantees compatibility with the Sonnenschein A512/6.5SR model, this is an excellent, cost-effective option.

Key Specifications

  • Model: Sonnenschein A512/6.5SR (Replacement)
  • Replacement Brand: SigmasTek
  • Battery Type: Rechargeable Sealed-Lead-Acid (SLA)
  • Technology: Absorbent Glass Mat (AGM)
  • Voltage: 12 Volts
  • Capacity: 7.5 Ah
  • Terminal Type: F2
  • Design: Maintenance-Free, Spill Proof Construction
  • Certifications: U.L. Recognized and CE Certified
  • Condition: Brand New, Factory Fresh
  • Warranty: 1 Year Warranty

Benefits

This Sonnenschein A512/6.5SR replacement battery is designed for durability and dependable service. AGM construction ensures a robust, vibration-resistant battery that offers superior charge acceptance and extended life compared to older flooded designs. The maintenance-free, spill-proof configuration reduces maintenance time and safety concerns, making it ideal for emergency lighting cabinets and confined installations.

As a high-performance battery option, this replacement unit supports steady output for critical applications including UPS systems, emergency lighting, alarm systems, and telecommunications backup. The long-lasting battery characteristics make it a smart investment for facilities managers and technicians who require consistent standby power and minimal downtime.

U.L. recognition and CE certification provide assurance of safety and global compliance, while the brand new, factory-fresh condition and 1 year warranty give extra peace of mind. The easy-to-install F2 terminal and standard 12 Volt / 7.5 Ah specification make this replacement battery a straightforward, drop-in solution for your Sonnenschein A512/6.5SR needs.

Don't wait until your emergency system is compromised — purchase this reliable replacement battery today to restore full operational readiness.

Sonnenschein A512/6.5S Replacement Battery — Compatible with Sonnenschein A512/6.5S

Restore reliable emergency power quickly with this Sonnenschein A512/6.5S replacement battery. Designed to meet or exceed OEM SLA battery specifications, this high-performance battery uses AGM technology and a maintenance-free, spill-proof design for dependable, long-term service. If your system specifies the Sonnenschein A512/6.5S model, this replacement battery provides full compatibility and consistent performance when it matters most.

Key Specifications

  • Model: Sonnenschein A512/6.5S (Replacement)
  • Replacement Brand: SigmasTek
  • Battery Type: Rechargeable Sealed-Lead-Acid (SLA)
  • Technology: Absorbent Glass Mat (AGM)
  • Voltage: 12 Volts
  • Capacity: 7.5 Ah
  • Terminal Type: F2
  • Design: Maintenance-Free, Spill Proof Construction
  • Certifications: U.L. Recognized and CE Certified
  • Condition: Brand New, Factory Fresh
  • Warranty: 1 Year Warranty

Benefits

Engineered for stability and long service life, this Sonnenschein A512/6.5S replacement battery offers reliable operation across a wide range of standby and emergency applications. AGM technology provides low self-discharge and excellent charge recovery, ensuring the battery stays ready for duty. The maintenance-free design eliminates the need for regular electrolyte checks, and the spill-proof construction enhances installation safety.

This high-performance battery is well-suited for UPS backup, emergency lighting, exit signage, alarm systems, and other critical standby power roles. The long-lasting battery design reduces replacement frequency and total cost of ownership while delivering consistent power during outages. U.L. and CE certifications add confidence for compliance-focused installations.

Supplied brand new and factory fresh with a 1 year warranty, this replacement battery is an efficient, dependable solution for replacing your Sonnenschein A512/6.5S. The F2 terminal and standard 12V 7.5Ah specification mean a straightforward replacement process that minimizes downtime.

Ensure uninterrupted emergency performance — order this Sonnenschein A512/6.5S replacement battery now and keep your systems protected.

Sonnenschein A412/5.5 SR Replacement Battery — Compatible with Sonnenschein A412/5.5 SR

When your Sonnenschein A412/5.5 SR requires a replacement, choose this engineered replacement battery to restore reliable emergency lighting and standby power. Built to meet or exceed OEM SLA battery specifications, this replacement battery features AGM construction, a maintenance-free and spill-proof design, and full compatibility with the Sonnenschein A412/5.5 SR model. It’s a practical, long-lasting battery option for critical systems.

Key Specifications

  • Model: Sonnenschein A412/5.5 SR (Replacement)
  • Replacement Brand: SigmasTek
  • Battery Type: Rechargeable Sealed-Lead-Acid (SLA)
  • Technology: Absorbent Glass Mat (AGM)
  • Voltage: 12 Volts
  • Capacity: 7.5 Ah
  • Terminal Type: F2
  • Design: Maintenance-Free, Spill Proof Construction
  • Certifications: U.L. Recognized and CE Certified
  • Condition: Brand New, Factory Fresh
  • Warranty: 1 Year Warranty

Benefits

This Sonnenschein A412/5.5 SR replacement battery provides dependable, long-lasting power for emergency lighting, UPS systems, and other standby applications. AGM technology offers strong charge acceptance, reduced maintenance needs, and improved resilience to vibration and shock — qualities that enhance durability in both permanent and portable installations. The maintenance-free, spill-proof design makes it safe and easy to handle during replacement.

As a high-performance battery solution, it maintains steady output under load and is ideal for emergency power, exit signs, alarm panels, and small UPS units. The combination of U.L. recognition and CE certification ensures compliance with safety standards. Supplied brand new with a 1 year warranty, this replacement battery reduces downtime and restores reliable operation quickly.

Ease of installation is supported by the F2 terminal type and standard 12V/7.5Ah rating, making it a straight swap for systems that specify Sonnenschein A412/5.5 SR batteries.

Don't let aged batteries compromise your safety systems — purchase this Sonnenschein A412/5.5 SR replacement battery today to secure continuous, long-lasting performance.

Sonnenschein A312/5.7S Replacement Battery — Compatible with Sonnenschein A312/5.7S

Replace your aging battery with this reliable Sonnenschein A312/5.7S replacement battery designed for emergency lighting and standby applications. Manufactured to meet or exceed OEM SLA battery specifications, this long-lasting battery uses AGM technology and a maintenance-free, spill-proof build to deliver consistent, high-performance power for your Sonnenschein A312/5.7S model.

Key Specifications

  • Model: Sonnenschein A312/5.7S (Replacement)
  • Replacement Brand: SigmasTek
  • Battery Type: Rechargeable Sealed-Lead-Acid (SLA)
  • Technology: Absorbent Glass Mat (AGM)
  • Voltage: 12 Volts
  • Capacity: 7.5 Ah
  • Terminal Type: F2
  • Design: Maintenance-Free, Spill Proof Construction
  • Certifications: U.L. Recognized and CE Certified
  • Condition: Brand New, Factory Fresh
  • Warranty: 1 Year Warranty

Benefits

This Sonnenschein A312/5.7S replacement battery combines robust AGM construction with maintenance-free operation for a reliable, long-lasting battery solution. AGM technology ensures low self-discharge and excellent performance in standby situations, while the spill-proof design increases safety and simplifies installation. The result is a durable battery that supports uninterrupted emergency lighting and backup power systems.

As a high-performance battery, it is well suited for UPS backups, emergency exit lighting, alarm systems, and other critical applications where dependable power is essential. The 12V/7.5Ah rating and F2 terminal make installation straightforward, and U.L. recognition plus CE certification ensure compliance and safety. Supplied brand new and covered by a 1 year warranty, this replacement battery offers peace of mind for facility managers and service technicians.

Keep your systems protected and functioning at peak readiness by choosing this Sonnenschein A312/5.7S replacement battery — a practical, reliable option for maintaining emergency power integrity.

Order now to secure this dependable, high-performance replacement battery and ensure your Sonnenschein A312/5.7S-equipped systems remain fully operational.


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