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SigmasTek  |  SKU: BW-12863

Sonnenschein A51225G High Performance Replacement Battery

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

➤ Replacement battery meets or exceeds OEM Sonnenschein A51225G specifications

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

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

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

➤ Includes 1-year warranty and is brand new, factory fresh for long-lasting power


📦🚀 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 A51225G Replacement Battery — Compatible with Sonnenschein A51225G

The Sonnenschein A51225G replacement battery is engineered to match or exceed OEM SLA specifications and provide reliable, consistent power for critical backup systems. This replacement battery combines AGM technology, maintenance-free design, and a spill-proof build to deliver dependable performance in emergency lighting, alarm systems, and medical backup applications. If you’re looking for a high-performance battery with guaranteed compatibility, the A51225G replacement battery is an excellent option.

Key Specifications

  • Model: Sonnenschein A51225G
  • Replacement for Sonnenschein A51225G
  • 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

Featuring AGM technology, this replacement battery provides reliable charge acceptance and consistent output throughout its service life. The maintenance-free and spill-proof qualities reduce the need for regular attention and enable safe, versatile installation in cabinets, enclosures, and portable systems. As a high-performance battery, the A51225G supports rapid recovery after discharge and steady voltage to critical loads during outages.

This Sonnenschein A51225G long-lasting battery is ideally suited for emergency lighting fixtures, security and fire alarm systems, medical equipment backups, and consumer electronics. It also serves as a dependable option for UPS setups, emergency power solutions, and handheld or stationary tools requiring a robust SLA backup. Certifications such as U.L. and CE confirm the battery’s adherence to established safety and performance criteria, and the 1-year warranty underscores its quality assurance.

Delivered brand-new and factory-fresh, the A51225G replacement battery is ready for immediate installation. The nut & bolt terminals ensure a secure, low-resistance connection for reliable long-term operation.

Ensure your systems remain protected—order your Sonnenschein A51225G replacement battery today and secure a high-performance, long-lasting battery solution for your critical power needs.


Payment & Security

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