AC Coupled Inverter
for high efficiency battery

The TSUN AC coupled storage solution is one of the most cost-effective solar and battery storage solutions in the market. By adding the AC coupled storage solution from TSUN into your existing on grid system, you can store extra solar power from your home system into batteries during the day - and use it later when necessary.

TSUN AC Coupled Inverter for high efficiency battery is suitable for TSUN high-voltage battery packs. It is high efficiency and suitable for retrofitted PV systems. It is in line with the development trend of AC Coupled inverters.

TSUN AC Coupled Inverter for high efficiency battery

TSUN AC coupled inverters include two types of high efficiency batteries and standard batteries. The high efficiency battery AC coupled inverter matches the increasingly popular high-voltage battery packs on the market to form an AC coupled system (Inverter + Battery). The system enables energy-efficient retrofits of existing PV systems, thereby providing the lowest lifetime energy costs for refurbished customers.

Help users to change existing power generation system to energy storage system very easily and quickly.

High transform efficiency, smart and flexible using.

AC Coupled Inverter (for high efficiency battery)


  • Suitable for high voltage batteries, high efficiency
  • Wide MPPT range
  • Small Volume
  • Light Weight
  • Easy to use wiring from the front
  • Powerful EPS performance
  • Multiple models available to meet different needs



  • Coming Soon
Battery Detail

Why AC Coupled System

TSUN AC coupled storage system boasts a range a new features, keeping us at the forefront of battery storage technology.

  • Flexibility

    Compatible with on-grid photovoltaic systems, easy retrofits. Integrated design with battery, extendable battery pack optional. All-in-one design, easier installation.

  • Reliability

    IP65, suitable for indoor & outdoor usage. Natural convection, no air fans. Intelligent battery management system, longer life time

  • Usability

    Real-time monitoring, remote diagnosis and maintenance. Multi operating modes optional. 3000VA emergency power supply

  • Warranty

    The inverter module has a standard warranty of 5 years. The battery module has a standard warranty of 3 years. The battery capacity warranty is not less than 60% of the nominal capacity within 10 years

Output Power

3000 to 6000W

Battery Voltage

85 to 400 V

Battery Capacity

2.4 to 16.8 kWh

Max. Charging/Discharging Current

20 A (Adjustable)

Dimension (W*H*D)

400 *460 *170 mm


17 kg

How AC Coupled System works

AC coupled storage system is adding the battery storage system to a existing solar on grid system. A solar on grid system is generating electricity from the form of DC to AC via solar on grid invert­er. When an AC coupled inverter connects to the same network via AC then it converts the spare energy back into DC and stores in the battery.

One of biggest advantages of AC coupled storage is that it turns ANY new or existing solar system a true "battery ready" system. The other main advantage is that for existing solar systems, the investment already made does not need to be wasted by removing the on grid inverter and replacing it with a hybrid one.

Mode Ⅰ

During the daytime, the electricity generated by the on-grid system is preferentially supplied to the local home consumption and when there is more electricity produced, it will be charged by the energy storage system, if still there is electricity left, the remaining energy will go into the grid

Mode Ⅱ

During the daytime, the electricity generated by the on-grid system is preferentially supplied to the local home consumption. If the energy produced is not sufficient, the energy storage system will preferentially release the stored energy and supply to load. And if the power is still not enough, the load will use electricity from grid.

Mode Ⅲ

During the night, the on-grid system slops working and the energy storage system releases stored energy and supply the home consumption, if the energy is not sufficient, it will be provided from the grid.

Mode Ⅳ

In the event of grid breakdown, the on-grid system will stop working due to anti-islanding protection. The energy storage system will supply energy via emergency interface to load.

Mode V

The energy storage system can use the grid to charge the battery. If the local time-of-use tariffs mode is adopted, the user can choose to charge the battery when the electricity price is low.

—— Technical Data ——

AC Output Data (On-grid)

AC Output Data(Back-up)

AC Intput Data

Battery Internal Charger


Safety & Protection

Communication & Display

General Data