5Kw Growatt SPF 5000 ES Inverter can work with or without batteries. The whole system also needs other devices to achieve complete running such as PV modules, generators, or utility grids. The WIFI / GPRS module is a plug-and-play monitoring device to be installed on the inverter. With this device, users can monitor the status of the PV system from the mobile phone or from the website anytime anywhere. The integrated MPPT charge controller It can work with a battery or without a battery Maximum PV input voltage up to 450VDC Configurable grid or solar input priority Optional WIFI/ GPRS remote monitoring Parallel for scalability Growatt 5kw inverter output Rated Power: 5000VA/ 5000W AC Voltage Regulation (Battery Mode): 230VAC +_5% @ 50/60Hz Surge Power: 10000VA Efficiency (Peak): 93% Waveform: Pure sine wave Transfer Time: 10 ms (For Personal Computers); 20 ms (For Home Appliances) SOLAR CHARGER Maximum PV Array Power: 5500W MPPT Range @ Operating Voltage: 120VDC-430VDC Maximum PV Array Open Circuit Voltage: 450VDC Maximum Solar Charge Current: 100A AC CHARGER Charge Current: 80A AC Input Voltage: 230 VAC Frequency Range: 50Hz/60Hz (Auto-sensing) Selectable Voltage Range: 170-280 VAC (For Personal Computers): 90-280 VAC (For Home Appliances)