AC Coupled Inverter
for standard battery

The Tsun AC coupled storage solution is one of the most
cost-effective solar and battery storage solutions in the market. By storing and using your
own renewable energy 24 hours a day, you can save quite a lot of money from your original electricity bill.

By adding the AC coupled storage solution from Tsun into your exsiting on grid system, you can store extra solar power
from your home system into batteries during the day - and use it later when necessary. In this way you can use your solar energy more effectively and save your monthly electricity bill. The system will supply energy to you even the grid is cut off.

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 an 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 praduced is not sufficient, the energy storage system will preferentially release the stored energy and supply to load. And if the power is still nat 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 peak and volley electricity price mode is adopted, the user can choose to charge the battery when the electricity price is low.

What can we offer

AC Coupled Inverter (for standard battery)


  • Compatible with on-grid photovoltaic systems, easy retrofits
  • Suitable to three-phase electric network
  • High efficiency, less maintenance
  • Low battery voltage, much safer
  • IP65, suitable for both indoor and outdoor
  • Easy monitoring by mobile phone(APP) & PC(web)
Inverter Detail



  • Coming Soon
Battery Detail

Tsun AC Coupled Inverter for standard battery

Tsun introduces an AC coupled inverter that includes both high-voltage battery and low-voltage battery versions. The low-voltage battery version AC coupled inverter can match the mainstream low-voltage battery packs on the market and form an AC coupled system to perform energy storage transformation on existing PV systems, providing the lowest lifetime energy cost for retrofit customers.

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

It's own battery management system, can be compatible with most of lithium battery and lead-acid battery.

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. Multi operating modes optional. Suitable to three-phase electric network

  • Reliability

    High efficiency, less maintenance. High frequency isolation between battery and grid. Advanced BMS technology for better battery performance. Low battery voltage, much safer

  • Easier Operation

    IP65, suitable for both indoor and outdoor. 4'LCD clear, easy-to-read display. Easy monitoring by mobile phone (APP) & PC (web)

  • Intelligent

    Reactive power capability Limits AC output when grid frequency/voltage is too high or too low Built-in anti-reflex function (optional)

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

Technical Data


DATASHEET_TSUN AC Coupled Inverter TSOL-A-S.pdf