Mercury Maverick 850 UPS Offline 850VA/510W
The Mercury Maverick 850 is a compact offline UPS built to keep a PC, router, or small home appliance running through a brief power cut. Rated at 850VA/510W, it switches to battery power within 2–6ms (max 10ms), giving connected devices enough time to save work before a full shutdown. Boost and buck AVR corrects minor voltage fluctuations directly from mains power without switching to the battery, which helps extend battery life over time. The unit ships with a 12V/9AH battery, delivers a simulated sine wave in battery mode, and offers typical backup of 15–25 minutes depending on the connected load — enough to ride out short outages on workstations, routers, TVs, or small CCTV systems.
Key Features
- 850VA/510W capacity, suited to single PCs, routers, or small home appliances
- Boost and buck AVR, correcting voltage swings without draining the battery
- Fast 2–6ms transfer time (max 10ms), minimizing disruption during outages
- Typical 15–25 minute backup, depending on connected load
- Auto-restart on AC recovery, bringing connected devices back online automatically
Technical Specifications
| Specification | Detail |
|---|---|
| Model | Mercury Maverick 850 |
| UPS Type | Offline (Line Interactive AVR) |
| Capacity | 850 VA / 510 W |
| Input Voltage | 220–240VAC (nominal) |
| Input Voltage Range | 140–300 VAC |
| Input Frequency | 50/60Hz |
| Max Input Current | 4.8A |
| Output Voltage Regulation (Battery Mode) | ±10% |
| Waveform | Simulated sine wave (battery mode); synchronized with input (AC mode) |
| Output Sockets | 2 x Universal |
| Battery | 1 x 12V/9AH |
| Battery Recharge Time | 6 hours to 90% capacity |
| Backup Time | Typical 15–25 minutes, depending on load |
| Transfer Time | 2–6ms typical, max 10ms |
| Protection | Overload, battery low/deep discharge, short circuit, fault alarms |
| Additional Features | Off-mode charging, intelligent battery management, power-on self-test, auto-restart on AC recovery |
| Indicators | LED lights for Line, Battery, and Fault modes |
| Power Cord | UK-style plug |
Best Suited For
- Home users protecting a single PC, router, TV, or modem from short KPLC outages
- Small offices needing basic, affordable backup power for one workstation
- Households running CCTV systems, keeping cameras and recorders powered through brief power cuts


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