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Lighting & electrical
MAU4000Elite
The MAU4000Elite are versatile AC-coupled energy storage systems, perfect for upgrading existing grid-tied setups or powering new microinverter-based installations. They empower homeowners to slash electricity bills by maximizing self-consumption and intelligently shifting energy use during high-tariff periods.Designed to grow with your needs, these units support flexible parallel expansion for both single-phase and…
SupplierHeadquarters TSUNESS Co., Ltd.www.tsun-ess.com
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MAU4000Elite
Seamlessly Upgrade Your Existing Solar
• AC-Coupled: No inverter replacement. 100% compatible.
• 24/7 Power: Store excess daytime energy for night. Bypass peak rates.
• Extreme Durability: IP65 sealed. Survives monsoon rains and coastal salt mist.
• 24/7 Power: Store excess daytime energy for night. Bypass peak rates.
• Extreme Durability: IP65 sealed. Survives monsoon rains and coastal salt mist.
100% Compatible Retrofit
Advanced AC-Coupled design connects seamlessly with your existing microinverters. Capture excess solar without changing your setup.
Scalable Storage Strategy
Stackable LFP battery modules grow perfectly with your power demands, expanding effortlessly from a baseline of 4kWh up to 20kWh.
Your Compact Balcony Power Plant
Optimized for balcony space.
Connects directly with grid. Zero rewiring required.
Connects directly with grid. Zero rewiring required.
Advanced IP65 weatherproofing for coastal humidity & heavy rainfall.
The Ultimate Plug-and-Play Balcony Solar Battery Storage
Designed specifically for modern apartment living, the MAU4000Elite is a compact LiFePO4 battery for apartment balconies that seamlessly integrates with your setup. If you are looking into retrofitting balcony solar with battery storage, this AC-coupled battery for existing microinverters requires absolutely zero rewiring. It’s the easiest DIY balcony solar storage solution to capture excess daytime power, helping you reduce electricity bills with balcony solar and achieve true energy independence without the complexity of traditional rooftop installations.
The Best Grid-Tied Solar Battery Upgrade for Apartments | 24/7 Smart Power
Existing Solar System? Stop Wasting Your Excess Power.
The PowerTrunk MAU4000Elite series is the ultimate AC-coupled solution designed specifically for households that already have grid-tied solar or balcony microinverter systems. By utilizing innovative AC Coupling technology, it allows you to easily add storage and capture surplus daytime energy for nighttime use, maximizing self-consumption and ROI without complex rewiring.
Zero Rewiring — 100% Compatible with All Grid-Tied Inverters & PV Modules
Mix Old & New Batteries Freely
Our advanced built-in Energy Optimizer allows you to seamlessly mix old and new battery packs. Expand your capacity anytime in the future without suffering from "bucket effect" degradation.
Weatherproofed for Extreme Conditions
Engineered for uninterrupted power in uncovered balconies, rooftops, or gardens facing heavy monsoon rains, extreme humidity, or temperature swings (-20°C to 55°C).
Max Performance
Scalable up to 20kWh: Optimized for high-efficiency energy harvesting and long-term stability with 10,000-cycle design life.
10,000
Life Cycles
2500 W
Max. AC Input
4 kWh
Battery per Unit
20 kWh
Max. Capacity
Max Performance
Scalable up to 20kWh:
Optimized for high-efficiency energy harvesting and long-term stability with 10,000-cycle design life.
10,000
Life Cycles
2500 W
Max. AC Input
4 kWh
Battery per Unit
20 kWh
Max. Capacity
Smart Control: Maximum Profit, Zero Headaches
Strict "Zero-Export" Compliance
Bypass tedious utility export approvals. Pairs instantly with Smart Meters to block unauthorized grid feed-in. 100% of your solar yield stays trapped for local use, driving your bills to the absolute minimum.
TOU Arbitrage & Remote Diagnostics
Users: Put savings on autopilot. Schedule discharges via App to beat peak Time-of-Use (TOU) rates.
Installers: Built-in WiFi/Bluetooth enables swift 1-minute commissioning and remote fleet troubleshooting, drastically reducing on-site truck rolls.
Installers: Built-in WiFi/Bluetooth enables swift 1-minute commissioning and remote fleet troubleshooting, drastically reducing on-site truck rolls.
Technical Specifications
Download Datasheet ▼| Model | MAU4000Elite |
| System Type | AC-Coupled Storage |
| Battery Type | LiFePO4 (LFP) |
| Capacity (kWh) | 4 |
| Max. System Capacity | 20 kWh |
| Life Cycle | 10,000 (@25°C) |
| Max. Output Power [W] | 2000 |
| Max. Input Power [W] | 2500 |
| Dimensions (mm) | 583 × 333 × 375 |
| IP Rating | IP65 |
| Temp. Range | -20°C to 55°C |
*Only partial parameters are listed. For the complete specification list, please refer to the official datasheet.
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