Marstek MARS II ESS | Inverter + Battery | Full Set
- 7-in-1 1000V V-Boost Residential ESS
- Up to 15 kW Three-Phase Hybrid Inverter
- 24 kW Solar Input | 4 MPPT
- 1000V V-Boost Battery
- 40 kW EV DC Charger
- 15 kW V2X
- SG-Ready Heat pump management
- Localized EMS
Regular price
From HK$68,500.00
Regular price
Sale price
From HK$68,500.00
(-0%)
Unit price
per
HK$68,500.00
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
24kW
1000V
650V
120V
200V ~ 850V
4
1
16A
20.8A
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
15kW
16.5kVA
21.7A
23.9A
380V / 400V
50Hz / 60Hz
0.8 leading ~ 0.9 lagging
THDi ＜ 2%
18kW
19.8kVA
26.1A
28.7A
Nominal Output Power
Peak Output Current
Nominal Output Voltage
Power Factor
Total Voltage Harmonic Distortion
Disruption Time of Backup Switch
15kW
150% ~ 200%
380V / 400V
50Hz / 60Hz
THDv ＜ 2%
＜ 10ms
Battery Module Models
Number of Modules Per Inverter
Nominal Voltage of Battery Module
Voltage Range of Battery Module
MST-MARSII-7.5KBAT
1 ~ 6PCS
800V
650V ~ 950V
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
680 × 235 × 505mm
45kg
-40°C ~ 70°C
-25°C ~ 60°C
0 ~ 100%
4000m, derating from 2000m
Natural Cooling
25W
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 EV Charger), RS485 for EMS, USBA for EMS Dongle, Wi-Fi / BT / Ethernet, Battery Access CAN (Internal)
With four independent MPPTs, each string is optimized individually to prevent power losses from shading or module mismatch.
Especially suited for installations with multiple orientations and tilt angles.
Starting at just 200 V, it captures sunlight from multiple angles—maximizing energy harvest from dawn to dusk.
Up to
for Whole Home Power
Choose from 8, 10, 12, or 15 kW to match your home’s energy needs.
Run entire household, Live fully off the grid and complete energy independence.
Boosted, Balanced with up to 1000V V-Boost Battery
Forget the barrel effect. With V-Boost up to 1000 V and real-time cell balancing, MARSTEK MARS II unlocks each cell’s full performance, without compromises.
Infinite Warmth Ready on Demand
With SG-Ready integration, MARSTEK MARS II automatically redirects surplus solar power to your home heat pump during the day—avoiding grid exports and feed-in penalties.
At night, stored hot water is ready when you are.
From dawn to dusk, MARSTEK MARS II turns every ray into lasting warmth—no waste, no compromise.
Real Time
Real-time electricity price monitoring in 46 countries
Apple - App Store
Google Play
MARSTEK MARS II 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 150% ~ 200% 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 II connects effortlessly to third-party systems.
MARSTEK MARS II's EPS system delivers backup in under 10 ms, keeping your home online through every outage.
Charge your electric vehicle fast with up to 40 kW of DC power. With 15 kW Vehicle-to-Everything (V2X), your EV becomes part of your home's energy system—able to discharge power back to the house or grid when needed.
*EV DC Charger(Optional.)
Extreme Reliability with
In off-grid mode or during long outages, MARSTEK MARS II can tap into a connected diesel generator.
Coming soon: smart controls that automatically start the generator based on battery levels—efficient and reliable.
The MARSTEK 1000V V-Boost Battery actively balances voltage across all packs, avoiding the “barrel effect” where weaker cells drag down performance.
This boosts efficiency, extends lifespan, and ensures reliable high-voltage power.
With automotive-grade LFP cells, MARSTEK MARS II delivers over 6000 cycles and retains 80% capacity for up to 15 years.
It’s engineered for safety — minimizing fire and explosion risks — and backed by a 10-year warranty. Power you can trust, year after year.
Build Your Battery, Grow to 46.08 kWh
Start with two battery packs and stack more as your needs grow. With a modular design, expanding up to 6 packs is as easy as building blocks. Get up to 46.08kWh of power, built to grow with you.
Scalable in Parallel
Up to
MARSTEK MARS II adapts to your needs. Connect up to 4 systems in parallel, scaling seamlessly from 8kW to 60kW and 15.36kWh to 184.32kWh.
Perfectly tailored power, designed for every home.
With IP65-rated waterproof and dustproof protection, MARSTEK MARS II 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 II 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
-
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
-
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.