APC Back-UPS XS 900VA XS900 UPS High Performance Replacement Battery Set
Couldn't load pickup availability
⚠️ 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 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 | 7.5 Ah
Terminal Type
F2
Replacement SigmasTek SP12-7.5HR Batteries for APC Back-UPS XS XS900
Upgrade the power protection for your APC Back-UPS XS XS900 with this reliable, high-performance replacement UPS battery set. Designed for direct compatibility with the APC Back-UPS XS XS900, these two SigmasTek SP12-7.5HR batteries deliver consistent performance, dependable recharge characteristics, and the build quality needed for mission-critical and home-office backup systems. Whether you’re restoring runtime after many charge cycles or proactively replacing aging cells, this replacement UPS battery set restores the original reliability of your UPS so your equipment stays protected during outages.
Key Specifications
- Battery model: SigmasTek SP12-7.5HR
- Quantity: 2 batteries per set
- Voltage: 12 Volts
- Capacity: 7.5 AH (Amp-hours)
- Design: High Rate Discharge Design
- Construction: Valve Regulated Spill Proof Construction
- Feature: Low Self-discharge
- Feature: High Vibration Resistance
- Certifications: U.L. Recognized and CE Certified
- Condition: Brand New, Factory Fresh
- Warranty: 1 Year Warranty
- Compatibility: APC Back-UPS XS XS900 Uninterruptible Power Supply (UPS)
Benefits
These SigmasTek SP12-7.5HR batteries are engineered for demanding UPS applications that require a reliable, high-rate discharge capability. As a high-performance UPS battery option, they provide immediate power delivery during short, intense demand periods—making them well suited for the APC Back-UPS XS XS900 when it needs to supply surge loads or support connected equipment during transition to generator or mains restoration. The valve regulated, spill-proof construction reduces maintenance and allows safe installation inside closed UPS enclosures. Low self-discharge helps preserve stored capacity during long intervals between uses, and high vibration resistance increases durability in transportation or equipment racks.
These replacement batteries offer the qualities you expect from a long-lasting battery option: stable performance over repeated charge/discharge cycles, factory-fresh condition out of the box, and industry certifications that meet safety and reliability standards. Typical applications include Uninterruptible Power Supply (UPS) units like your APC Back-UPS XS XS900, emergency power systems, and battery-powered tools or equipment that may benefit from a dependable 12V 7.5Ah source. Whether you’re restoring runtime to critical network infrastructure, protecting home-office computers, or preparing emergency power supplies, this set is a versatile choice.
Choose this replacement UPS battery set for a cost-effective way to return full capability to your APC Back-UPS XS XS900. Buy with confidence and restore your protection today—order now to get a high-performance UPS battery and fast shipping on in-stock items.
-
Voltage
-
Amp Hours
-
Terminal Type
-
Length (in.)
-
Width (in.)
-
Height (in.)
-
Weight (lb.)
-
Warranty
-
Type
-
Manufacturer
-
Brand Replacement
Payment & Security
Payment methods
Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.



