MWXNE 3000W Sump Pump Battery Backup System with LCD Display for Emergency and Power Outage, Pure Sine Wave Inverter, Auto Switches for Grid and Battery — Open-Box, 8% Off

【EXCELLENT PERFORMANCE】 MWXNE sump pump battery backup delivers up to 3000W power output and up to 27.5A current output, supporting multiple sump pumps simultaneously. The high-efficiency power inverter generates a stable pure sine wave 120 VAC waveform, ensuring clean power comparable to grid power and preventing damage to electrical appliances.

【AUTO SWITCHOVER】 This battery backup for sump pump features ultra-fast (<10ms) automatic switching between grid power and battery backup. Under normal power conditions, the battery automatically recharges; during a power outage, the backup inverter seamlessly switches over, ensuring continuous pump operation and protecting your basement from flooding at all times.

【CHARGING MODE】 The sump pump battery backup system features a built-in 30A charger that supports rapid charging for most common battery types. It also includes overcharge protection — once the battery (sold separately) is fully charged, the unit switches to trickle charging to maintain it safely.

【COMPREHENSIVE SAFETY PROTECTION】 Equipped with a circuit breaker that quickly cuts off power to the circuit when a ground fault is detected, preventing electric shock. It features an industrial-grade smart chip with overload, short circuit, over-voltage/under-voltage, over-temperature, overcharge, and reverse polarity protection.

【EASY PLUG-AND-PLAY INSTALLATION】 No rewiring needed. Simply connect AC and DC cables, then plug in. Standard 3-pin design prevents wiring errors and electrical hazards. Flat or wall mountable. Setup takes under 10 minutes.

MWXNE 3000W Sump Pump Battery Backup System with LCD Display for Emergency and Power Outage, Pure Sine Wave Inverter, Auto Switches for Grid and Battery