Sonnenschein A212/12G5 High Performance Replacement Battery
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⚠️ 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 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
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
⚠️ 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 A212/12G5 Replacement Battery - Compatible with Sonnenschein A212/12G5
When you need a reliable, drop-in replacement for the Sonnenschein A212/12G5, choose this high-performance battery engineered for compatibility, safety, and dependable operation. Built to meet or exceed OEM SLA specifications, the Sonnenschein A212/12G5 replacement offers a maintenance-free, spill-proof design that supports emergency lighting, alarm systems, medical devices, and other critical applications requiring a long-lasting battery solution.
Key Specifications
- Model: Sonnenschein A212/12G5 (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
Constructed with AGM technology and rated by UL and CE, this Sonnenschein A212/12G5 replacement battery delivers rugged reliability and safe handling. As a high-performance battery, it provides consistent power delivery and efficient recharge, making it ideal for systems that cannot tolerate downtime. The maintenance-free, spill-proof design reduces the need for periodic servicing and helps protect equipment and personnel from accidental leaks.
Designed for a wide range of applications, this long-lasting battery excels in emergency lighting, security and fire alarm systems, medical equipment, and consumer electronic backup. It is equally appropriate for UPS systems, emergency power packs, and portable tools that require steady, dependable output. The secure nut & bolt terminals ensure a solid electrical connection in racks and enclosures, and the brand-new, factory-fresh condition ensures optimal shelf life and performance from day one.
Backed by a 1 year warranty, this Sonnenschein-compatible replacement battery is a cost-effective way to maintain uninterrupted operation of your critical systems while enjoying the peace of mind that comes with certified safety and proven technology.
Replace your Sonnenschein A212/12G5 today—order this long-lasting, high-performance replacement battery now and keep your systems running when it counts.
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