APC S400XLTNET High Performance Replacement Battery By SigmasTek
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🔹 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
SigmasTek 12V 18Ah NB Replacement UPS Battery — Compatible with APC S400XLTNET
Replace depleted batteries in your APC S400XLTNET with the SigmasTek 12V 18Ah NB battery for reliable backup power and consistent UPS performance. This replacement UPS battery is engineered for durability and dependable operation, giving your UPS the capacity it needs to protect servers, network equipment and essential electronics from unexpected outages. For anyone seeking a high-performance UPS battery for the APC S400XLTNET, this SigmasTek unit delivers dependable results.
Key Specifications
- Brand: SigmasTek
- Voltage: 12V
- Capacity: 18Ah
- Terminal Type: NB (Nut & Bolt)
- Compatibility: Designed for APC S400XLTNET
- Features: Reliable and durable
Benefits
This SigmasTek battery is manufactured to be a long-lasting battery option for APC S400XLTNET UPS systems. The NB (Nut & Bolt) terminal configuration ensures a secure mechanical and electrical connection, reducing the risk of loose contacts and providing stable performance under vibration or movement. As a high-performance UPS battery, it supports consistent discharge rates and dependable energy delivery during power interruptions, which is essential for protecting critical loads and enabling controlled shutdowns.
Durability and reliability are central to its design: the SigmasTek 12V 18Ah is suitable for repeated charge/discharge cycles typical of standby UPS service. Typical applications include data closets, telecom racks, medical equipment power support, and general UPS emergency power for small to medium installations. By choosing a replacement UPS battery like this SigmasTek model, you invest in continued uptime and lower lifecycle costs through fewer replacements and stable runtime.
The straightforward installation process minimizes service time, allowing IT staff or technicians to swap the battery quickly and return the UPS to full protection. Its OEM-style compatibility with the APC S400XLTNET ensures correct fit and electrical behavior.
Ready to restore full backup capability to your APC S400XLTNET? Purchase the SigmasTek 12V 18Ah NB high-performance UPS battery now and secure reliable, long-lasting power for your critical systems.
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