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SigmasTek  |  SKU: BW-12864

Sonnenschein A51225.0G5 High Performance Replacement Battery

Sale price $119.98 USD Regular price $139.48
Shipping calculated at checkout.

➤ Meets or exceeds OEM Sonnenschein A51225.0G5 battery specifications

➤ Absorbent Glass Mat (AGM) technology for reliable performance

➤ Maintenance-free and spill-proof design for hassle-free use

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

➤ Includes 1-year warranty and guaranteed 100% compatibility


📦🚀 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 | 26 Ah

Terminal Type

Nut & Bolt

Sonnenschein A51225.0G5 Replacement Battery — Compatible with Sonnenschein A51225.0G5

The Sonnenschein A51225.0G5 replacement battery is built to deliver reliable, OEM-level compatibility and steady performance for emergency lighting, alarm panels, and medical backup equipment. This high-performance battery meets or exceeds SLA specifications and offers a maintenance-free, spill-proof design for safe, low-maintenance operation. If you need a long-lasting battery that you can trust in critical situations, the A51225.0G5 replacement battery is engineered to perform.

Key Specifications

  • Model: Sonnenschein A51225.0G5
  • Replacement for Sonnenschein A51225.0G5
  • Battery Type: SLA (Sealed Lead Acid)
  • Technology: Absorbent Glass Mat (AGM)
  • Design: Maintenance-Free
  • Construction: Spill Proof
  • Certifications: U.L. Recognized and CE Certified
  • Condition: Brand New, Factory Fresh
  • Warranty: 1 Year Warranty
  • Supplier/Brand: SigmasTek
  • Voltage: 12 Volts
  • Capacity: 26 Ah
  • Terminal Type: Nut & Bolt

Benefits

Utilizing AGM technology, this replacement battery provides excellent reliability and predictable performance through repeated discharge and recharge cycles. The maintenance-free, spill-proof design simplifies installation and reduces ongoing upkeep, making it ideal for installations where access is limited or maintenance windows are tight. As a high-performance battery, the A51225.0G5 ensures steady power delivery and quick recharge characteristics, minimizing downtime for critical systems.

The Sonnenschein A51225.0G5 long-lasting battery is suitable for a wide range of applications including emergency lighting, security and fire alarm systems, medical equipment backups, and consumer electronics. It is also an excellent match for UPS units, emergency power systems, and various tools that rely on SLA backup power. With U.L. recognition and CE certification, this battery meets recognized safety and performance standards, and the included 1-year warranty gives added assurance.

Shipped brand-new and ready for use, the A51225.0G5 replacement battery includes nut & bolt terminals to ensure a secure electrical connection for long-term reliability.

Keep your critical systems ready—purchase the Sonnenschein A51225.0G5 replacement battery today for a durable, high-performance, and long-lasting battery solution.


Payment & Security

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