Marstek Mars I Plus ESS | Inverter + Battery | Full Set
Marstek Mars I Plus ESS
- 7-in-1 550V / 1000V V-Boost Single-phase Residential ESS
- Up to 6kW / 12kW Three-Phase Hybrid Inverter
- Up to 12kW / 24kW Solar Input | 2 MPPT
- 550V / 1000V V-Boost Battery
- 24 kW EV DC Charger
- 6 kW / 12kW V2X
- SG-Ready Heat pump management
- Localized EMS
Regular price
From HK$37,000.00
Regular price
Sale price
From HK$37,000.00
(-0%)
Unit price
per
HK$37,000.00
Max. PV Power
Max. DC Input Voltage
Nominal DC Input Voltage
Start-up Voltage Range
MPPT Voltage Range
Number of MPPT Trackers
Number of PV Strings Per MPPT
Max. Input Current Per MPPT
Max. Short-circuit Current Per MPPT
12kW (Single Phase) | 24kW (Three Phase)
550V (Single Phase) | 1000V (Three Phase)
360V (Single Phase) | 650V (Three Phase)
150V (Single Phase) | 200V (Three Phase)
125-500V (Single Phase) | 850V (Three Phase)
2 (Single Phase) | 4 (Three Phase)
1
16A
23A (Single Phase) | 20.8A (Three Phase)
Nominal Output Power
Max. Output Apparent Power
Nominal Output Current
Max. Output Current
Nominal Output Voltage
Nominal Grid Frequency
Power Factor
Total Current Harmonic Distortion
Nominal Input Power
Max. Input Apparent Power
Nominal Input Current
Max. Input Current
6kW (Single Phase) | 12kW (Three Phase)
6kVA (Single Phase) | 13.2kVA (Three Phase)
27.3A (Single Phase) | 18.2A (Three Phase)
27.3A (Single Phase) | 20A (Three Phase)
230V (Single Phase) | 380V / 400V (Three Phase)
50Hz / 60Hz
0.8 leading ~ 0.8 lagging
THDi < 3%
6kW (Single Phase) | 18kW (Three Phase)
6kVA (Single Phase) | 18kVA (Three Phase)
27.3A (Single Phase | 24.5A (Three Phase)
27.3A
Nominal Output Power
Peak Output Current
Nominal Output Voltage
Power Factor
Total Voltage Harmonic Distortion
Disruption Time of Backup Switch
6kW (Single Phase) | 12kW (Three Phase)
39.1A/9kW/60s (Single Phase) | 26A/18kVA/1s (Three Phase)
230V (Single Phase) | 380V/400V (Three Phase)
50Hz/60Hz
THDv < 3%
< 10ms
Battery Module Models
Number of Modules Per Inverter
Nominal Voltage of Battery Module
Voltage Range of Battery Module
MST-MARS I PLUS-5.0KBAT
1 ~ 6PCS
400V (Single Phase) | 650V (Three Phase)
360V~550V (Single Phase) | 650V~950V (Three Phase)
Dimensions (W/H/D)
Weight
Storage Temperature Range
Operating Temperature Range
Relative Humidity Range
Max. Operating Altitude
Cooling
Standby Power Comsumption
System Ingress Protection Rating
Noise Level
Display
General IO
Communication
628 × 195 × 400mm (Single Phase) | 610 × 220 × 560mm (Three Phase)
30kg (Single Phase) | 35kg (Three Phase)
-30°C ~ 80°C (Single Phase) | -35°C ~ 80°C (Three Phase)
-25°C ~ 60°C (Single Phase) | -20°C ~ 60°C (Three Phase)
0 ~ 90% (Single Phase) | 0 ~ 100% (Three Phase)
4000m, derating from 2000m
Natural Cooling
< 35W (Single Phase | < 25W (Three Phase)
IP65
< 30dB
10.1" LCD, APP
DI × 4, DO × 2, CT × 3, +5V power, +12V power, DRAM
RS485 for Meter, RS485 for Heat Pump, Parallel CAN × 2, DC BUS CAN (for V2G), RS485 for EMS, USBA for EMS Dongle, Wi-Fi/BT/Ethernet, Battery Access CAN (Internal)
Solar All Day, Optimized by 4 MPPTs
With up to 24 kW of solar input and independent MPPT tracking from 200 V startup to sunset shutdown, MARSTEK MARS I PLUS captures more from every panel, at every angle.
Single-phase: up to 12 kW Input | Three-phase: up to 24 kW Input
Total Independence with Customizable Hybrid Inverter from 6 to 12kW
Available in 6 to 12 kW — Single-phase and Three-phase options to match every need.
Whether you're looking for a reliable backup solution or planning to go fully off-grid, MARSTEK MARS I PLUS adapts to your energy setup.
Single-phase: 6.0 kW | Three-phase: 12 kW
Boosted, Balanced with up to
Forget the barrel effect. With V-Boost up to 1000 V and real-time cell balancing, MARSTEK MARS I PLUS unlocks each cell’s full performance, without compromises.
Single-phase: 550 V | Three-phase: 1000 V
SG-Ready Heat Pump Warmth Without Waste
No feed-in penalties, no energy wasted. Just smart solar-to-heat conversion, ready when you are.
Real Time
Real-time electricity price monitoring in 46 countries
Apple - App Store
Google Play
MARSTEK MARS I PLUS uses real-time load insights to capture excess solar and keep it on site—eliminating grid export and maximizing your own energy.
Provides reliable backup for essential appliances, with peak output up to 1440 W for short bursts.
Access real-time data, fine-tune settings, and follow guided setup—all from the 10.1” HD touchscreen. Local EMS optimization is ready to empower your home today.
With open architecture and standard APIs, MARSTEK MARS I PLUS connects effortlessly to third-party systems.
MARSTEK MARS I PLUS’s EPS system delivers backup in under 10 ms, keeping your home online through every outage.
Up to
Up to 40 kW DC charging keeps you moving. V2X ready for the return—feed energy back into your home when it’s needed most.
Single-phase: 24 kW charging / 6 kW V2X
Three-phase: 40 kW charging / 12 kW V2X
Extreme Reliability with
In off-grid mode or during long outages, MARSTEK MARS I PLUS can tap into a connected diesel generator.
Coming soon: smart controls that automatically start the generator based on battery levels—efficient and reliable.
MARSTEK MARS I PLUS features automotive-grade LFP cells,
delivering over 6000 cycles and maintaining 80% capacity for up to 15 years.
Safe, reliable, and backed by a 10-year warranty.
Build Your Battery, Grow to 30.72 kWh
Scale up to six packs as your needs grow. With a modular, plug-and-play design, the MARSTEK MARS I PLUS delivers up to 30.72 kWh of flexible, future-ready storage.
Scalable in Parallel
Up to
Connect up to 4 MARSTEK MARS I PLUS systems to meet your exact needs,
scaling from 24 kW (single-phase) or from 48 kW (three-phase), with up to 122.88 kWh of total storage.
Perfectly tailored power, ready for any home.
With IP65-rated waterproof and dustproof protection, MARSTEK MARS I PLUS is ready to face any weather. Fire- and heat-resistant materials protect your energy system from the elements, ensuring reliable power year-round.
Sub
MARSTEK MARS I PLUS runs under 30dB, quieter than a fridge. Perfect for noise-sensitive households in the EU, it’s ideal for bedrooms, balconies, and spaces where peace is a priority.
Certifications & Standards
What press say...
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This device focuses on what you really need in everyday life – a large storage capacity at a low price. An inverter is already integrated. All you need are the solar panels.
Peter Hryciuk
Customer
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The device can even operate without an app. It features a touchscreen display that allows you to define the feed-in power according to schedules.
Kai Schmerer
Reporter
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Thanks to four MPPT inputs, this enables the use of up to 4 kW of solar energy.
Marcus Schwarten
Senior Tech Writer
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Marstek promises annual electricity cost savings of up to €1,797 through AI-supported time-use management and anti-feed-in technology.
Thommy
Autor
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It fits existing balcony solar installations and can be charged extremely quickly using grid energy – practical in combination with dynamic electricity tariffs.
Julia Struck
Senior Editor
FAQ
Q1: What type of battery do MARSTEK products use?
A: Marstek products utilize high-quality Lithium Iron Phosphate (LiFePO₄) batteries. These batteries support over 6,000 charge-discharge cycles, with a design lifespan exceeding 10 years while retaining over 80% of their original capacity, ensuring long-term reliability.
Q2: Are Lithium Iron Phosphate batteries safe?
A: Yes, they are highly safe. Marstek employs self-developed Grade A LiFePO₄ cells with a thermal runaway threshold above 270°C, fundamentally enhancing safety. All batteries undergo rigorous tests, including nail penetration and compression, to prevent combustion or explosion during use.
Q3: Does MARSTEK offer warranty and after-sales services?
A: Absolutely. Marstek provides comprehensive support, including a 5-year worry-free after-sales service and an extended 10-year manufacturer warranty, ensuring peace of mind throughout the product lifecycle.
Q4: How do I register a MARSTEK product?
A: To streamline service, we recommend registering your product via the official Marstek mobile app after purchase for seamless activation and support.
Q5: How is shipping calculated?
A: For orders within Hong Kong totaling HKD 100 or more, shipping is free. Currently, we do not offer international shipping.
Note: Deliveries to remote areas (e.g., outlying islands) or locations requiring special handling (e.g., stair climbing) may incur additional fees. Please contact us in advance for details.
Q6: What is the return and exchange policy?
A: We stand by our product quality. If you identify any non-human-caused quality issues within 7 days of delivery, contact us immediately.
Our team will verify the situation and arrange for a replacement, return, or refund as needed.