CyberPower ST900U 900VA / 500W Standby UPS

Description

CyberPower ST900U 900VA / 500W Standby UPS — Replacement Battery

Direct-fit replacement battery for the CyberPower ST900U 900VA / 500W Standby UPS. Plug in, screw in, done. Most customers complete the swap in under 10 minutes.

Compatible UPS Model

• CyberPower ST900U 900VA / 500W Standby UPS

What You Receive

• One CyberPower UPS unit for the CyberPower ST900U 900VA / 500W Standby UPS
• Installation guidance (see below)

Battery Details

• Type: Sealed lead-acid (VRLA) — maintenance-free, no venting required
• Performance: Engineered for the discharge curves typical of UPS backup operation
• Shelf life: Low self-discharge rate maintains capacity through long standby
• Durability: Vibration-tolerant, suitable for industrial environments
• Safety: Spill-proof, sealed construction certified to UL standards

Certifications & Quality

• Certified to U.L. and CE specifications
• Brand new
• Warranty: Standard CyberPower manufacturer warranty applies (varies by model)

Before You Install

Don’t worry — this is a DIY job. Unplug the UPS from the wall, slide out the old battery, plug in the new one, push it back in. The connector only fits one way.

Manufacturer warranty

📞 1 (438) 800-0382 · ✉️ [email protected]

Canada’s go-to shop for CyberPower UPS replacement batteries.