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SigmasTek  |  SKU: BW-12985

Sonnenschein A212/15G5 High Performance Replacement Battery

Sale price $72.00 USD Regular price $83.70
Shipping calculated at checkout.

➤ Replacement for Sonnenschein A212/15G5 model with 100% compatibility

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

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

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

➤ Backed by a 1-year warranty and factory fresh condition


📦🚀 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 | 18 Ah

Terminal Type

Nut & Bolt

Sonnenschein A212/15G5 Replacement Battery - Compatible with Sonnenschein A212/15G5

If you’re searching for a reliable replacement battery for your Sonnenschein A212/15G5, this high-performance battery delivers proven compatibility, dependable performance, and industry-grade reliability. Designed to meet or exceed the OEM SLA battery specifications, the Sonnenschein A212/15G5 replacement offers maintenance-free operation and consistent power delivery for emergency lighting, security systems, and medical devices. Whether you need a long-lasting battery for routine maintenance or a ready spare for critical systems, this replacement battery brings the durability and safety features you expect from a quality SLA cell.

Key Specifications

  • Model: Sonnenschein A212/15G5 (Replacement)
  • Brand (original compatibility): Sonnenschein
  • Replacement Brand: SigmasTek
  • Technology: Absorbent Glass Mat (AGM) Technology
  • Design: Maintenance-Free
  • Construction: Spill Proof
  • Certifications: U.L. Recognized and CE Certified
  • Condition: Brand New, Factory Fresh
  • Warranty: 1 Year Warranty
  • Voltage: 12 Volts
  • Capacity: 18 Ah
  • Terminal Type: Nut & Bolt

Benefits

Built with AGM technology and a spill-proof construction, this Sonnenschein A212/15G5 replacement battery offers superior durability and consistent performance under demanding conditions. As a high-performance battery, it provides stable voltage output and low internal resistance for efficient energy delivery. The maintenance-free design eliminates routine electrolyte checks and reduces downtime, making this unit ideal for facility managers and service technicians who need a long-lasting battery without extra upkeep.

The rugged construction and UL/CE recognition make this replacement battery suitable for critical applications where safety and reliability matter. Expect extended calendar life and dependable charge acceptance when used in emergency lighting, security alarms, and fire alarm systems. It’s also an excellent choice for consumer electronics, medical equipment, and home & garden backup devices. For uninterruptible power supplies (UPS), emergency power packs, and portable tools that demand consistent output, this long-lasting battery performs reliably as a drop-in replacement for the Sonnenschein A212/15G5.

Installation is straightforward with nut & bolt terminals, ensuring secure connections in enclosed equipment racks and emergency cabinets. The brand-new, factory-fresh cell arrives ready to install, backed by a 1 year warranty for added peace of mind. If you need a replacement battery that balances performance, safety, and value, this Sonnenschein-compatible unit delivers.

Ready to replace your Sonnenschein A212/15G5? Order this long-lasting, high-performance battery now and enjoy dependable power and full compatibility. Purchase today to secure reliable backup power for your critical systems.


Payment & Security

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