What precautions should I take before installing/adding Stackable Micro Battery?

When installing/adding expansion batteries, it is necessary to power off and shut down the system to protect yourself and the machine. Performing this operation while powered on is not covered under warranty. Please follow the steps below for proper installation: a. Disconnect the Micro Storage Unit and the solar panels. b. Press the on/off button for 2 seconds to turn off the power. c. After turning off the Micro Storage Unit, install the expansion batteries to the Micro Storage Unit. d. Connect solar panels for normal use.

Are there any other precautions that need to be taken when installing and using the product?

Ensure that the AC outlet is properly grounded.

Can I change the battery to the Micro Storage Battery or Stackable Micro Battery by myself?

No. If your battery in Micro Storage Unit or Stackable Micro Battery does not work or working conditions do not meet expectations, please contact the TSUN customer service team for further help.

How to make sure the equipment is safely grounded?

The included AC end cable already ensures that the machine is safely grounded, so there's no need to worry.

Are microinverters required to use Micro Storage Unit?

Micro Storage Unit does not require a microinverter. A microinverter is already incorporated into its all-in-one design that also includes a photovoltaic controller and energy storage battery pack.

Can the Micro Storage Unit charge batteries using the household power grid?

Yes, the Micro Storage Unit can charge your batteries using your home's AC power. It can be scheduled to do so during off-peak hours to reduce costs, and will also automatically charge AC power when the batteries are low and there is insufficient solar power, preventing battery damage and ensuring that you have some reserve energy available.

How do I use Micro Storage Unit to achieve zero-power function?

You need to buy our optional accessory smart meter, which prevents energy back-flow to the public grid by adjusting the output power of the Micro Storage Unit, matching household load in real-time. This achieves the purpose of not transmitting energy to the public grid, which is the anti-back-flow function.

How does the smart meter help Micro Storage Unit achieve zero energy waste?

The smart meter detects the total household electricity consumption, which lets Micro Storage Unit continually adjust output power. It's real-time and precise electrical discharge for your home, helping you achieve efficient energy use without waste.

SolarTrunk (Micro Hybrid Storage Unit)

MSU2000Lite 2-10kWh
MSU4000Lite 4-20kWh

The MSU4000Lite and MSU2000Lite are hybrid energy storage systems that seamlessly integrate solar power generation and storage, making them the ideal choice for new solar installations. They empower homeowners to maximize energy independence and reduce electricity bills through intelligent self-consumption, Time-of-Use (TOU) shifting, and dynamic tariff optimization.
Built for flexible expansion, multiple units can operate in parallel to scale capacity for larger single-phase or three-phase applications. Powered by durable 314Ah high-cycle cells and TSUN’s proprietary Battery Optimizer technology, the system supports mixing existing and new batteries—eliminating matching concerns while enhancing safety, reliability, and long-term performance.

DATASHEET

Products Storage System Micro Storage System SolarTrunk (Micro Hybrid Storage Unit)

SolarTrunk Lite Series

• All-in-One Architecture: Hybrid storage unit for effortless solar integration.
• Smart Grid Interaction: Charge from grid & discharge to load for TOU optimization.
• Extreme Versatility: Stable operation within -20°C to 55°C ambient temperature.

Superior Safety. Elite Performance. Simplified.

The SolarTrunk MSU2000/4000Lite is an elite, hybrid energy storage solution. By bridging the gap between microinverters and batteries, it allows you to store surplus solar power for 24/7 use and emergency backup.

Plug & Play Design — No Professional Electrician Required

Micro Hybrid Storage Unit

Max Performance

Scalable up to 20kWh: Supports up to 2800W PV input with an industry-leading 10,000-cycle design life for long-term energy independence.

10,000

Life Cycles

2800 W

Max. PV Input

2 / 4 kWh

Battery per Unit

20 kWh

Max. System Capacity

Intelligent Hybrid Management

Zero Export Function

Ensures zero power is fed back into the grid, maximizing your local solar consumption.

Versatile Charging

Flexible energy management allowing battery charging from both solar modules and the AC grid.

Technical Specifications

Download Datasheet ▼

SolarTrunk MSU Datasheet (PDF)

Model	MSU2000Lite	MSU4000Lite
Max. PV Power	2800 W
Battery Type	LiFePO4 (LFP)
Capacity (kWh)	2	4
Life Cycle	10,000 (@25°C)
Max. Output Power	2500 W
Switch Time	≤10 ms
Dimensions (mm)	583 × 410 × 390
IP Rating	IP65

*Specifications are subject to change without prior notice. Refer to the datasheet for details.

Frequently Asked Questions

What precautions should I take before installing/adding Stackable Micro Battery?

A :

When installing/adding expansion batteries, it is necessary to power off and shut down the system to protect yourself and the machine. Performing this operation while powered on is not covered under warranty. Please follow the steps below for proper installation: a. Disconnect the Micro Storage Unit and the solar panels. b. Press the on/off button for 2 seconds to turn off the power. c. After turning off the Micro Storage Unit, install the expansion batteries to the Micro Storage Unit. d. Connect solar panels for normal use.
Are there any other precautions that need to be taken when installing and using the product?

A :

Ensure that the AC outlet is properly grounded.
Can I change the battery to the Micro Storage Battery or Stackable Micro Battery by myself?

A :

No. If your battery in Micro Storage Unit or Stackable Micro Battery does not work or working conditions do not meet expectations, please contact the TSUN customer service team for further help.
How to make sure the equipment is safely grounded?

A :

The included AC end cable already ensures that the machine is safely grounded, so there's no need to worry.
Are microinverters required to use Micro Storage Unit?

A :

Micro Storage Unit does not require a microinverter. A microinverter is already incorporated into its all-in-one design that also includes a photovoltaic controller and energy storage battery pack.
Can the Micro Storage Unit charge batteries using the household power grid?

A :

Yes, the Micro Storage Unit can charge your batteries using your home's AC power. It can be scheduled to do so during off-peak hours to reduce costs, and will also automatically charge AC power when the batteries are low and there is insufficient solar power, preventing battery damage and ensuring that you have some reserve energy available.
How do I use Micro Storage Unit to achieve zero-power function?

A :

You need to buy our optional accessory smart meter, which prevents energy back-flow to the public grid by adjusting the output power of the Micro Storage Unit, matching household load in real-time. This achieves the purpose of not transmitting energy to the public grid, which is the anti-back-flow function.
How does the smart meter help Micro Storage Unit achieve zero energy waste?

A :

The smart meter detects the total household electricity consumption, which lets Micro Storage Unit continually adjust output power. It's real-time and precise electrical discharge for your home, helping you achieve efficient energy use without waste.