Victron Multiplus-ii 48 5000 70-50 4000W Inverter charger

Brand	Unbranded
Manufacturer	(SS) QuickTech
Model Number	VIC-MULTIPLUS-II-48-5000-70-50

The Victron Multiplus-ii 48 5000 70-50 4000W Inverter charger is a modular, 48 kW, 70-50% efficient, 4000 watt inverter charger that can be configured to operate with a PV array and a PV inverter, or with a PV array and a PV charge controller. It can temporarily store excess solar power in the battery, and can be controlled to flow power to and from the grid.

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The MultiPlus-II fits seamlessly into all common energy storage topologies
There is no one-size-fits-all solution to energy storage. The building blocks, topology and control systems will depend on local preferences and regulations. The MultiPlus-II hardware, together with a wide range of software tools, seamlessly fits in all common topologies, shown in the pictures below.
The MultiPlus-II
Will temporarily store excess solar power in the battery.
Can be configured to operate with a PV array and a MPPT solar charge controller, or with a PV array and a PV inverter.
Can control the power flow to and from the grid. When connected in series with the incoming power line, the internal power meter can be used. Several wired and wireless external power meter solutions are available for other configurations.