Start shopping
Critical Parts Warehouse
Your resource for uninterruptible power supply systems and more!
Save 10% on Your First Order
Join our email list for exclusive pricing, product updates, and offers built for your business. We'll only send what's useful, never spam.
New subscribers get 10% off their first order—up to $250.
From home offices to industrial plants and data centers, power through with a Riello UPS.
Power with precision. Depend on Toshiba 1600XPI for clean, reliable energy.
"Arrived quickly before promised date."
"Your store provided excellent service. The large heavy batteries made it safely. They charged up nicely. All I have to do now is make new connectors and I'm back in business."
"Quick delivery, great communication, smooth transaction."
Featured Collections
CPW News
UPS Maintenance: What It Includes, Why It Matters & When to Schedule It
A UPS, or uninterruptible power supply, is designed to keep critical equipment powered when utility power fails, fluctuates, or becomes unstable. But like any piece...
Why Is My UPS Beeping? Common UPS Alarms and What They Mean:
If your uninterruptible power supply (UPS) suddenly starts beeping, don't ignore it. That sound is your UPS communicating that something has changed. Sometimes, a...
Why Runtime Isn't the Only Thing That Matters When Buying a UPS
Learn why UPS runtime is only one factor when buying a battery backup. Discover how sizing, battery technology, reliability, and power quality affect your UPS...
Let us know how we can help!
Our team is dedicated to helping you find the best solution for your mission critical needs.
Brands we carry
What Does Your UPS Need?
Need help determining what your UPS needs?
| If you're experiencing... | You may need... |
|---|---|
| Reduced battery runtime | UPS battery replacement |
| Battery alarms | UPS battery inspection/replacement |
| An aging UPS | Preventative maintenance |
| UPS fan alarms or excessive noise | UPS fan replacement |
| An older UPS with aging components | Capacitor replacement |
| Recurring maintenance needs | UPS maintenance contract |
| Generator starting or operating concerns | Generator preventative maintenance |
| Multiple aging components | Full UPS evaluation |
Add your text here. Use the toolbar to add bullet points.