For questions, quotes, or help finding the right battery, feel free to email us at sales@batteryweb.com

New collections added! Learn more

🎉 First Order Special 🎉

First-time shoppers get 5% OFF on batteries & accessories!

WELCOME5
SigmasTek  |  SKU: BW-11817

Sonnenschein S1234I Premium Replacement Battery

Sale price $20.99 USD Regular price $32.01
Shipping calculated at checkout.

➤ Meets or exceeds OEM Sonnenschein S1234I SLA battery specifications

➤ Absorbent Glass Mat (AGM) technology for reliable performance

➤ Maintenance-free and spill-proof design for worry-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.

📸 Send Your Battery Photo / Unsure? Expert Help

Snap a photo or video of your battery and send it to us. We'll identify the exact replacement—fast and hassle-free. Our team has helped thousands of customers find the right battery quickly and easily.
POST YOUR IMAGE

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

6 Volts | 3 Ah

Terminal Type

F1

Sonnenschein S1234I Replacement Battery — Compatible with Sonnenschein S1234I

Get dependable standby power with the Sonnenschein S1234I replacement battery, designed to meet or exceed OEM SLA battery specifications for the Sonnenschein S1234I model. This replacement battery emphasizes consistent performance, durability, and compatibility so your emergency and critical systems remain protected when power is lost.

Key Specifications

  • Model Compatibility: Sonnenschein S1234I
  • Replacement Brand: SigmasTek
  • Battery Type / Technology: Absorbent Glass Mat (AGM) Technology
  • Voltage: 6 Volts
  • Capacity: 3 Ah
  • Terminal Type: F1
  • Design: Maintenance-Free
  • Construction: Spill Proof
  • Certifications: U.L. Recognized and CE Certified
  • Condition: Brand New, Factory Fresh
  • Warranty: 1 Year Warranty
  • Meets/Exceeds: OEM SLA battery specifications

Benefits

The Sonnenschein S1234I replacement battery delivers long-term reliability through AGM technology, offering stable voltage under load and improved resistance to vibration and leakage. As a maintenance-free, sealed battery it provides a safe, low-hassle power solution that performs reliably over repeated charge/discharge cycles. This makes it an excellent long-lasting battery for systems that require high availability.

Its robust construction and certifications (U.L. Recognized and CE Certified) make it suitable for emergency lighting, security alarms, fire alarm panels, medical devices, consumer electronics, and home & garden applications. The compact 6 Volt, 3 Ah configuration with F1 terminal ensures simple installation and direct fit replacement in compatible devices. The product ships brand new and factory fresh with a 1 year warranty to protect your investment.

If you’re searching for a high-performance battery that matches Sonnenschein S1234I specifications, this SigmasTek replacement battery is engineered for exact compatibility and dependable performance in critical situations. It’s also ideal for UPS and emergency backup systems where uninterrupted power is essential.

Ready to upgrade to a reliable replacement battery? Purchase the Sonnenschein S1234I replacement battery now to restore confidence in your backup power systems.


Payment & Security

Payment methods

  • American Express
  • Apple Pay
  • Diners Club
  • Discover
  • Google Pay
  • Mastercard
  • PayPal
  • Shop Pay
  • Visa

Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.