CyberPower Extended Battery Module – Fits RT33 Series (Min 2×, Max 10×)

Your RT33 UPS is doing its job, but the runtime isn't covering your failover window. This CyberPower Extended Battery Module slots straight into the RT33 series so you can stretch that backup from minutes to hours. Install as few as two or up to ten modules — match the count to how long you actually need the lights and the server on. It's a direct fit for the RT33 platform, no rewiring, no guesswork about whether it'll drop in. When you're ready to order, call us or book a quick chat and we'll confirm lead time before you commit

• Direct-fit extended battery module for CyberPower RT33 series UPS
• Install between 2 and 10 modules to match your required runtime
• Extends failover window without replacing the whole UPS unit
• Purpose-built for RT33 — no adapter or third-party conversion needed