APC Back-UPS Pro BX850M UPS High Performance Replacement Battery 5.99 lb
— Ready to ship immediately
Check that your old battery model number and device model to match our description. This makes sure they work together.
We ship your order same day if you buy it before 4 PM EST.
APC Back-UPS Pro BX850M UPS High Performance Replacement Battery is backordered and will ship as soon as it is back in stock.
Let customers speak for us
Send Your Battery Photo
Expert Technician 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 BATTERY IMAGE
Product & Solutions Expert
✉ sales@batteryweb.com
Battery Care Tips
Battery Care Tips
🔹 Getting Started
Charge your new battery fully before you use it for the first time. Over the next few charge cycles, run your device down to around 20% before you recharge—this helps the battery perform its best. After that, charge whenever you need to.
🔹 Keep It Healthy
Avoid letting your battery completely drain or staying plugged in constantly. Both extremes wear it out faster. Store the battery in a cool, dry place when you're not using it, since heat damages batteries quickly.
Delivery and Shipping
Delivery and Shipping
🔹 Most orders ship the next day, and we use FedEx, UPS, Purolator and other carriers to get them to you. Lithium batteries have to ship by ground only, not air or USPS. Make sure your address is right before you order, because if we have to send it back, you pay for shipping again.
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.
Volts & Amps
12 Volts | 9 AH
Terminal Type
F2
SigmasTek SP12-9HR Replacement Battery for APC Back-UPS Pro BX850M
Upgrade the runtime and reliability of your APC Back-UPS Pro BX850M with a purpose-built replacement UPS battery. The SigmasTek SP12-9HR (12 Volts, 9 AH) is a high-performance UPS battery designed to deliver dependable backup power when you need it most. It’s factory fresh, safety-certified, and engineered specifically for applications that demand short bursts of elevated power. Please note: you must use all existing cables and hardware from your original BX850M unit to install the new battery.
Key Specifications
- Battery Model: SigmasTek SP12-9HR
- Compatible UPS Model: APC Back-UPS Pro BX850M
- Voltage: 12 Volts
- Capacity: 9 AH
- Design: High Rate Discharge Design
- Construction: Valve Regulated, Spill Proof
- Self-discharge: Low self-discharge
- Durability: High vibration resistance
- Certifications: U.L. Recognized and CE Certified
- Condition: Brand New, Factory Fresh
- Warranty: 1 Year Warranty
Benefits
This high-performance UPS battery is built for reliable service and consistent output. The high rate discharge design makes it especially suitable for the APC Back-UPS Pro BX850M, where sudden increases in load can occur during power events. Valve-regulated, spill-proof construction minimizes maintenance and improves safety for home and office installations, while the low self-discharge characteristic helps the battery hold charge during prolonged storage.
Long life is central to the SP12-9HR’s value proposition: factory fresh cells, quality control testing, and certifications (U.L. recognized and CE certified) combine to deliver a long-lasting battery you can trust. Its high vibration resistance broadens installation options, providing reliable performance in environments where movement or minor shocks might occur. The included 1 Year Warranty offers further protection and peace of mind.
Use this replacement UPS battery for uninterrupted power supply with the APC Back-UPS Pro BX850M, as an emergency power reserve, or in battery-powered tools that require brief high-output bursts. Whether protecting workstations, networking gear, or small servers, this long-lasting battery offers the dependable support your equipment needs.
Don’t wait until your next outage — restore full runtime and confidence with this replacement UPS battery for your APC Back-UPS Pro BX850M. Order now and receive a high-quality, long-lasting battery with fast shipping.
Technical Specifications
Product Highlights
- Brand Replacement : APC Back-UPS
- Manufacturer: SigmasTek
- Product Type: UPS Batteries
- Warranty: 12 Months
- Bulk Orders: sales@batteryweb.com
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.
