All-in-one energy storage system, EU standard, 1.2–12 kW
The mainstream European wall unit: 1.2 kW to 12 kW, 1.28 kWh to 32 kWh, with the inverter, BMS and battery in one cabinet and a stackable option at the top of the range.
Product image
- Brand
- HighIdea
- Type
- All-in-one energy storage system, 220/230 V EU standard
- Typical applications
- Residential solar storage, apartment balconies, small shops, backup for critical loads
- Models in range
- ESS 1.2kW+1.28kWh, ESS 1.2kW+2.56kWh, ESS 1.2kW+3kWh, ESS 3.6kW+5kWh, ESS 3.6kW+8kWh, ESS 5kW+5kWh, ESS 5kW+7.2kWh, ESS 5kW+8kWh, ESS 6.5kW+16kWh, ESS 6.5kW+10kWh, ESS 6.5kW+21kWh, ESS 12kW+16kWh, ESS 12kW+21kWh, ESS 12kW+32kWh, ESS 12kW+5kWh*n, ESS 12kW+10kWh*n, ESS 12kW+16kWh*n
- Category
- All-in-One ESS
One cabinet instead of three boxes
A conventional residential system is an inverter, a battery and a BMS in three enclosures, connected by DC cable, a breaker and a communication lead. An all-in-one cabinet puts them in one box with one installation step and one warranty contact.
This series covers the European mainstream: 1.2 kW with 1.28 kWh for balcony and apartment storage, up to 12 kW with 32 kWh for a house or a small shop. Seven cabinet variants share the same platform, differing in power stage, battery capacity and mounting.
Choosing between the variants
Below 3 kWh, the decision is a wall in a hallway or a balcony rail — the 1.2 kW units are built for that. Between 5 and 8 kWh, a 3.6 kW or 5 kW cabinet covers a flat or a small house. Above 10 kWh, the 6.5 kW and 12 kW variants take over, and the stackable 12 kW unit allows capacity to grow without replacing the inverter.
Model range
| Model | Rated output | Battery | Variant |
|---|---|---|---|
| ESS 1.2kW+1.28kWh | 1.2 kW | 1.28 kWh | 1.2 kW wall unit |
| ESS 1.2kW+2.56kWh | 1.2 kW | 2.56 kWh | 1.2 kW wall unit |
| ESS 1.2kW+3kWh | 1.2 kW | 3 kWh | 1.2 kW wall unit |
| ESS 3.6kW+5kWh | 3.6 kW | 5 kWh | 3.6 kW cabinet |
| ESS 3.6kW+8kWh | 3.6 kW | 8 kWh | 3.6 kW cabinet |
| ESS 5kW+5kWh | 5 kW | 5 kWh | 5 kW cabinet |
| ESS 5kW+7.2kWh | 5 kW | 7.2 kWh | 5 kW cabinet |
| ESS 5kW+8kWh | 5 kW | 8 kWh | 5 kW cabinet |
| ESS 6.5kW+16kWh | 6.5 kW | 16 kWh | 6.5 kW + 16 kWh |
| ESS 6.5kW+10kWh | 6.5 kW | 10 kWh | 6.5 kW cabinet |
| ESS 6.5kW+16kWh | 6.5 kW | 16 kWh | 6.5 kW cabinet |
| ESS 6.5kW+21kWh | 6.5 kW | 21 kWh | 6.5 kW cabinet |
| ESS 12kW+16kWh | 12 kW | 16 kWh | 12 kW cabinet |
| ESS 12kW+21kWh | 12 kW | 21 kWh | 12 kW cabinet |
| ESS 12kW+32kWh | 12 kW | 32 kWh | 12 kW cabinet |
| ESS 12kW+5kWh*n | 12 kW | 5 kWh × n | 12 kW stackable |
| ESS 12kW+10kWh*n | 12 kW | 10 kWh × n | 12 kW stackable |
| ESS 12kW+16kWh*n | 12 kW | 16 kWh × n | 12 kW stackable |
| ## Specifications by variant |
1.2 kW wall unit
| Parameter | ESS 1.2kW+1.28kWh | ESS 1.2kW+2.56kWh | ESS 1.2kW+3kWh |
|---|---|---|---|
| PV Input Max. Input Capacity (W) | 800 | — | — |
| PV Input Current (A) | 18 | — | — |
| PV Input Short-circuit Current (A) | 20 | — | — |
| Open Circuit Voltage (VDC) | 115 | — | — |
| Start-up MPPT Voltage (VDC) | 20 | — | — |
| MPPT Voltage (VDC) | 17~115 | — | — |
| Rated Input Voltage (VAC) | 208 / 220 / 230 / 240；L+N+PE | — | — |
| Voltage Range (VAC) | 90~280±3 (normal mode); 170~280±3 (UPS mode) | — | — |
| Frequency (Hz) | 50 / 60 | — | — |
| Bypass Input Current | 10 | — | — |
| Rated Capacity (kVA) | 1.2 | — | — |
| Voltage (VAC) | 208 / 220 / 230 / 240 | — | — |
| Frequency (Hz) | 50/60Hz±0.1% | — | — |
| Wave Form | Pure Sine Wave | — | — |
| Battery Mode Overload Capacity | 60s@102%< Load & <120%Load；10s@120%< Load & <200% Load | — | — |
| Battery Mode Max Efficiency | 90%@12VDC | — | — |
| Switch Time (ms) | < 10 | — | — |
| Nominal Voltage | 12.8VDC | 12.8VDC | 12.8VDC |
| Nominal Energy | 1.28kWh(0.2C, 25 °C) | 2.56kWh(0.2C, 25 °C) | 2.94kWh(0.2C, 25 °C) |
| Usable Energy(90%DOD) | 1.15KWh | 2.3KWh | 2.65KWh |
| Max AC Charge Current (A) | 50 | — | — |
| Max. PV Charge Current (A) | 50 | — | — |
| Max Charge Current (PV+AC) (A) | 100 | — | — |
| Max Discharge Current (A) | 110 | — | — |
| Operating Voltage Range | 10.8Vdc ~ 14.6Vdc | — | — |
| reveal | LCD | — | — |
| communication | USB | — | — |
| Monitoring | WIFI | — | — |
| Ingress Protection | IP20 | — | — |
| Operating Temperature | Charge0 °C～+55 °C;Discharge-20 °C～+55 °C | — | — |
| Relative Humidity | 5%～95% (Non-condensing) | — | — |
| Max Operating Altitude | 4000m (Derating above 2000m) | — | — |
| LxWxH (products size, mm) | 400x220x313mm | 400x220x313mm | 400x220x313mm |
| LxWxH (package size, mm) | 456x276x366mm | 456x276x366mm | 456x276x366mm |
| Weight (NW Kg) | 21 | 27 | 30 |
| Weight (GW Kg) | 22 | 28 | 31 |
| Quantity 20GP | 420 | 420 | 420 |
| Quantity 40GP | 760 | 600 | 540 |
| Quantity 40HQ | 1050 | 920 | 832 |
- Inverter + BMS + Battery, integrated design
- Support solar charging
- Support grid charging
- Support external Wi-Fi monitoring more
3.6 kW cabinet
Same electrical platform as the previous variant; the specification table above applies, with the battery capacity given by the model number.
5 kW cabinet
| Parameter | ESS 5kW+5kWh | ESS 5kW+7.2kWh | ESS 5kW+8kWh |
|---|---|---|---|
| PV Input Max. Input Capacity (W) | 9000 | — | — |
| PV Input Current (A) | 27 | — | — |
| PV Input Short-circuit Current (A) | 33 | — | — |
| Open Circuit Voltage (VDC) | 500 | — | — |
| Start-up MPPT Voltage (VDC) | 80 | — | — |
| MPPT Voltage (VDC) | 60~450 | — | — |
| Rated Input Voltage (VAC) | 208 / 220 / 230 / 240；L+N+PE | — | — |
| Voltage Range (VAC) | 90~280±3 (normal mode); 170~280±3 (UPS mode) | — | — |
| Frequency (Hz) | 50 / 60 ( Auto Adaptive) | — | — |
| Bypass Input Current | 40 | — | — |
| Rated Capacity (kVA) | 5 | — | — |
| Voltage (VAC) | 208 / 220 / 230 / 240 | — | — |
| Frequency (Hz) | 50/60Hz±0.1% | — | — |
| Wave Form | Pure Sine Wave | — | — |
| Battery Mode Overload Capacity | 60s@102%~110%；10s@110%~130%; 3s@130%~150%; 0.2s@≥150% | — | — |
| Battery Mode Max Efficiency | 93.5%@24VDC | — | — |
| Switch Time (ms) | < 10 | — | — |
| Nominal Voltage | 25.6VDC | 25.6VDC | 25.6VDC |
| Nominal Energy | 5kWh(0.2C, 25 °C) | 7.2kWh(0.2C, 25 °C) | 8kWh(0.2C, 25 °C) |
| Usable Energy(90%DOD) | 4.5kWh | 6.48kWh | 7.2kWh |
| Max AC Charge Current (A) | 160 | — | — |
| Max. PV Charge Current (A) | 160 | — | — |
| Max Charge Current (PV+AC) (A) | 160 | — | — |
| Max Discharge Current (A) | 190 | — | — |
| Operating Voltage Range | 21.6Vdc ~ 29.2Vdc | — | — |
| reveal | LCD | — | — |
| communication | USB | — | — |
| Monitoring | WIFI | — | — |
| Ingress Protection | IP20 | — | — |
| Operating Temperature | Charge0 °C～+55 °C;Discharge-20 °C～+55 °C | — | — |
| Relative Humidity | 5%～95% (Non-condensing) | — | — |
| Max Operating Altitude | 4000m (Derating above 2000m) | — | — |
| LxWxH (products size, mm) | 440x246x760 mm | 440x246x760 mm | 440x246x760 mm |
| LxWxH (package size, mm) | 520x436x890 mm | 520x436x890 mm | 520x436x890 mm |
| Weight (NW Kg) | 58 | 71 | 72 |
| Weight (GW Kg) | 72 | 86 | 87 |
| Quantity 20GP | 120 | 120 | 120 |
| Quantity 40GP | 260 | 260 | 260 |
| Quantity 40HQ | 260 | 260 | 260 |
6.5 kW + 16 kWh
| Parameter | ESS 6.5kW+16kWh |
|---|---|
| PV Input Max. Input Capacity (W) | 9000 |
| PV Input Current (A) | 27 |
| PV Input Short-circuit Current (A) | 33 |
| Open Circuit Voltage (VDC) | 500 |
| Start-up MPPT Voltage (VDC) | 80 |
| MPPT Voltage (VDC) | 60~450 |
| Rated Input Voltage (VAC) | 208 / 220 / 230 / 240；L+N+PE |
| Voltage Range (VAC) | 90~280±3 (normal mode); 170~280±3 (UPS mode) |
| Frequency (Hz) | 50 / 60 ( Auto Adaptive) |
| Bypass Input Current | 40 |
| Rated Capacity (kVA) | 6.5 |
| Voltage (VAC) | 208 / 220 / 230 / 240 |
| Frequency (Hz) | 50/60Hz±0.1% |
| Wave Form | Pure Sine Wave |
| Battery Mode Overload Capacity | 60s@102%~110%；10s@110%~130%; 3s@130%~150%; 0.2s@≥150% |
| Battery Mode Max Efficiency | 94%@48VDC |
| Switch Time (ms) | < 10 |
| Nominal Voltage | 51.2VDC |
| Nominal Energy (kWh) | 16.07(0.5C, 25 °C) |
| Usable Energy(90%DOD) | 14.46kWh |
| Max AC Charge Current (A) | 120 |
| Max. PV Charge Current (A) | 120 |
| Max Charge Current (PV+AC) (A) | 120 |
| Max Discharge Current (A) | 150 |
| Operating Voltage Range | 43.2Vdc~58.4Vdc |
| reveal | LCD |
| communication | USB |
| Monitoring | WIFI |
| Ingress Protection | IP20 |
| Operating Temperature | Charge0 °C～+55 °C;Discharge-20 °C～+55 °C |
| Relative Humidity | 5%～95% (Non-condensing) |
| Max Operating Altitude | 4000m (Derating above 2000m) |
| LxWxH (products size, mm) | 430x430x736 mm |
| LxWxH (package size, mm) | 540x510x895 mm |
| Weight (NW Kg) | 136 |
| Weight (GW Kg) | 159 |
| Quantity 20GP | 80 |
| Quantity 40GP | 160 |
| Quantity 40HQ | 160 |
- Inverter + BMS + Battery, integrated design
- Built-in solar inverter
- Support solar charging
- Feed-in to Grid
6.5 kW cabinet
| Parameter | ESS 6.5kW+10kWh | ESS 6.5kW+16kWh | ESS 6.5kW+21kWh |
|---|---|---|---|
| PV Input Max. Input Capacity (W) | 9000 | — | — |
| PV Input Current (A) | 27 | — | — |
| PV Input Short-circuit Current (A) | 33 | — | — |
| Open Circuit Voltage (VDC) | 500 | — | — |
| Start-up MPPT Voltage (VDC) | 80 | — | — |
| MPPT Voltage (VDC) | 60~450 | — | — |
| Rated Input Voltage (VAC) | 208 / 220 / 230 / 240；L+N+PE | — | — |
| Voltage Range (VAC) | 90~280±3 (normal mode); 170~280±3 (UPS mode) | — | — |
| Frequency (Hz) | 50 / 60 ( Auto Adaptive) | — | — |
| Bypass Input Current | 40 | — | — |
| Rated Capacity (kVA) | 6.5 | — | — |
| Voltage (VAC) | 208 / 220 / 230 / 240 | — | — |
| Frequency (Hz) | 50/60Hz±0.1% | — | — |
| Wave Form | Pure Sine Wave | — | — |
| Battery Mode Overload Capacity | 60s@102%~110%；10s@110%~130%; 3s@130%~150%; 0.2s@≥150% | — | — |
| Battery Mode Max Efficiency | 94%@48VDC | — | — |
| Switch Time (ms) | < 10 | — | — |
| Nominal Voltage | 51.2VDC | 51.2VDC | 51.2VDC |
| Nominal Energy (kWh) | 10.24(0.5C, 25 °C) | 16.07(0.5C, 25 °C) | 21.09(0.5C, 25 °C) |
| Usable Energy(90%DOD) | 9.2kWh | 14.46kWh | 18.98kWh |
| Max AC Charge Current (A) | 120 | — | — |
| Max. PV Charge Current (A) | 120 | — | — |
| Max Charge Current (PV+AC) (A) | 120 | — | — |
| Max Discharge Current (A) | 150 | — | — |
| Operating Voltage Range | 43.2Vdc~58.4Vdc | — | — |
| reveal | LCD | — | — |
| communication | USB | — | — |
| Monitoring | WIFI | — | — |
| Ingress Protection | IP20 | — | — |
| Operating Temperature | Charge0 °C～+55 °C;Discharge-20 °C～+55 °C | — | — |
| Relative Humidity | 5%～95% (Non-condensing) | — | — |
| Max Operating Altitude | 4000m (Derating above 2000m) | — | — |
| LxWxH (products size, mm) | 460x245x1110mm | 550x245x1180mm | 550x245x1350mm |
| LxWxH (package size, mm) | 540x420x1180mm | 630x420x1264mm | 630x450x1430mm |
| Weight (NW Kg) | 108 | 146 | 166 |
| Weight (GW Kg) | 126 | 168 | 215 |
| Quantity 20GP | 80 | 60 | 55 |
| Quantity 40GP | 180 | 130 | 120 |
| Quantity 40HQ | 200 | 154 | 120 |
- Inverter + BMS + Battery, integrated design
- Built-in solar inverter
- Support solar charging
- Feed-in to Grid
12 kW cabinet
| Parameter | ESS 12kW+16kWh | ESS 12kW+21kWh | ESS 12kW+32kWh |
|---|---|---|---|
| PV Input Max. Input Capacity (W) | 1MPPT:9KW;2MPPT:7.5KW+7.5KW | — | — |
| PV Input Current (A) | 1MPPT:27A;2MPPT:22.5A+22.5A | — | — |
| PV Input Short-circuit Current (A) | 33 | — | — |
| Open Circuit Voltage (VDC) | 500 | — | — |
| Start-up MPPT Voltage (VDC) | 80 | — | — |
| MPPT Voltage (VDC) | 60~450 | — | — |
| Rated Input Voltage (VAC) | 208 / 220 / 230 / 240；L+N+PE | — | — |
| Voltage Range (VAC) | 90~280±3 (normal mode); 170~280±3 (UPS mode) | — | — |
| Frequency (Hz) | 50 / 60 ( Auto Adaptive) | — | — |
| Bypass Input Current | 70 | — | — |
| Rated Capacity (kVA) | 12 | — | — |
| Voltage (VAC) | 208 / 220 / 230 / 240 | — | — |
| Frequency (Hz) | 50/60Hz±0.1% | — | — |
| Wave Form | Pure Sine Wave | — | — |
| Battery Mode Overload Capacity | 1min@102%~125%Load; 10s@125%Load~200%Load | — | — |
| Battery Mode Max Efficiency | 93%@48VDC | — | — |
| Switch Time (ms) | < 10 | — | — |
| Nominal Voltage | 51.2VDC | 51.2VDC | 51.2VDC |
| Nominal Energy | 16kWh(0.5C, 25 °C) | 21kWh(0.5C, 25 °C) | 32kWh(0.5C, 25 °C) |
| Usable Energy(90%DOD) | 14.4kWh | 18.9kWh | 28.8kWh |
| Max AC Charge Current (A) | 160 | — | — |
| Max. PV Charge Current (A) | 160 | — | — |
| Max Charge Current (PV+AC) (A) | 160 | — | — |
| Max Discharge Current (A) | 220 | — | — |
| Operating Voltage Range | 43.2Vdc~58.4Vdc | — | — |
| reveal | LCD | — | — |
| communication | USB | — | — |
| Monitoring | WIFI | — | — |
| Ingress Protection | IP20 | — | — |
| Operating Temperature | Charge0 °C～+55 °C;Discharge-20 °C～+55 °C | — | — |
| Relative Humidity | 5%～95% (Non-condensing) | — | — |
| Max Operating Altitude | 4000m (Derating above 2000m) | — | — |
| LxWxH (products size, mm) | 550x245x1230mm | 550x245x1400mm | 595x298x1550mm |
| LxWxH (package size, mm) | 630x420x1314mm | 630x450x1480mm | 755x480x1630mm |
| Weight (NW Kg) | 151 | 186 | 248 |
| Weight (GW Kg) | 172 | 215 | 302 |
| Quantity 20GP | 60 | 55 | 36 |
| Quantity 40GP | 130 | 120 | 84 |
| Quantity 40HQ | 156 | 120 | 105 |
- Inverter + BMS + Battery, integrated design
- Built-in solar inverter
- Support solar charging
- Feed-in to Grid
12 kW stackable
| Parameter | ESS 12kW+5kWh*n | ESS 12kW+10kWh*n | ESS 12kW+16kWh*n |
|---|---|---|---|
| PV Input Max. Input Capacity (W) | 1MPPT:9KW;2MPPT:7.5KW+7.5KW | — | — |
| PV Input Current (A) | 1MPPT:27A;2MPPT:22.5A+22.5A | — | — |
| PV Input Short-circuit Current (A) | 33 | — | — |
| Open Circuit Voltage (VDC) | 500 | — | — |
| Start-up MPPT Voltage (VDC) | 80 | — | — |
| MPPT Voltage (VDC) | 60~450 | — | — |
| Rated Input Voltage (VAC) | 208 / 220 / 230 / 240；L+N+PE | — | — |
| Voltage Range (VAC) | 90~280±3 (normal mode); 170~280±3 (UPS mode) | — | — |
| Frequency (Hz) | 50 / 60 ( Auto Adaptive) | — | — |
| Bypass Input Current | 70 | — | — |
| Rated Capacity (kVA) | 12 | — | — |
| Voltage (VAC) | 208 / 220 / 230 / 240 | — | — |
| Frequency (Hz) | 50/60Hz±0.1% | — | — |
| Wave Form | Pure Sine Wave | — | — |
| Battery Mode Overload Capacity | 1min@102%~125%Load; 10s@125%Load~200%Load | — | — |
| Battery Mode Max Efficiency | 93%@48VDC | — | — |
| Switch Time (ms) | < 10 | — | — |
| Nominal Voltage | 51.2VDC | 51.2VDC | 51.2VDC |
| Nominal Energy | 5kWh(0.5C, 25 °C) | 10kWh(0.5C, 25 °C) | 16kWh(0.5C, 25 °C) |
| Usable Energy(90%DOD) | 4.5kWh | 9kWh | 14.4kWh |
| Max AC Charge Current (A) | 160 | — | — |
| Max. PV Charge Current (A) | 160 | — | — |
| Max Charge Current (PV+AC) (A) | 160 | — | — |
| Max Discharge Current (A) | 220 | — | — |
| Operating Voltage Range | 43.2Vdc~58.4Vdc | — | — |
| reveal | LCD | — | — |
| communication | USB | — | — |
| Monitoring | WIFI | — | — |
| Ingress Protection | IP20 | — | — |
| Operating Temperature | Charge0 °C～+55 °C;Discharge-20 °C～+55 °C | — | — |
| Relative Humidity | 5%～95% (Non-condensing) | — | — |
| Max Operating Altitude | 4000m (Derating above 2000m) | — | — |
| LxWxH (products size, mm) | INV:540x480x180mm; BAT:540x480x164mm | INV:560x520x180mm; BAT:560x520x254mm | INV:680x520x180mm; BAT:680x520x254mm |
| LxWxH (package size, mm) | INV:616X562X336mm; BAT:616X556X620mm | INV:616X576X336mm; BAT:640X600X455mm | INV:736X576X336mm; BAT:766X600X444mm |
| Weight (NW Kg) | INV: 29Kg / BAT: 45Kg | INV: 29Kg / BAT: 89Kg | INV: 29Kg / BAT: 119Kg |
| Weight (GW Kg) | INV: 33Kg / BAT: 47Kg | INV: 33Kg / BAT: 101Kg | INV: 33Kg / BAT: 139Kg |
| Quantity 20GP | INV: 50PCS / BAT: 200PCS | INV: 25PCS / BAT: 100PCS | INV: 25PCS / BAT: 100PCS |
| Quantity 40GP | INV: 100PCS / BAT: 400PCS | INV: 48PCS / BAT: 192PCS | INV: 43PCS / BAT: 172PCS |
| Quantity 40HQ | INV: 110PCS / BAT: 440PCS | INV: 51PCS / BAT: 204PCS | INV: 43PCS / BAT: 172PCS |
- Inverter + BMS + Battery, integrated design
- Built-in solar inverter
- Support solar charging
- Feed-in to Grid
Key Features
- 1.2 kW to 12 kW output; 1.28 kWh to 32 kWh battery
- Inverter, BMS and LiFePO4 battery in one cabinet
- 220/230 V 50 Hz output for the EU market
- Solar input with MPPT charging on all variants
- Stackable 12 kW variant for capacity expansion
- Wall-mounted and floor-standing cabinet options
- Up to 8,000 cycles on the LiFePO4 cells
- App and cloud monitoring on the larger variants
Applications
Apartment and balcony solar
The 1.2 kW / 1.28 kWh variants fit a balcony rail or a hallway wall and cover base load through the evening.
Residential whole-home
5–6.5 kW variants with 10–21 kWh cover a house with a heat pump and an EV charged overnight.
Small commercial
12 kW with 32 kWh, or the stackable variant, covers a shop or a small workshop through an outage.
FAQ
Which variant for a normal house?
The 5 kW or 6.5 kW cabinet with 10–16 kWh. That covers a heat pump, lighting and a fridge for a night, with headroom for a cloudy morning.
Can the battery be expanded later?
On the stackable 12 kW variant, yes — capacity is quoted as 5, 10 or 16 kWh per module and stacks to the inverter limit. The smaller cabinets are fixed.
Is it outdoor-rated?
The cabinet variants are for indoor or sheltered installation. For an outdoor wall, use the IP66 inverter series with a separate battery.
Does it work off-grid?
Yes, with generator input on the larger variants. The 1.2 kW units are intended for grid-charged base-load shifting rather than off-grid.
Specification reference
| Rated output | 1.2 kW to 12 kW |
|---|---|
| Battery capacity | 1.28 kWh to 32 kWh |
| Battery chemistry | LiFePO4 |
| Grid output | 220 / 230 V, 50 Hz |
| PV input | MPPT, up to 9 kW on the 6.5 kW variants |
| Expansion | Stackable modules on the 12 kW variant |
| Monitoring | Wi-Fi app and cloud (5 kW and above) |
Specifications subject to the latest factory data. Final configuration is sized against the actual load, backup runtime and site power conditions — this table is for pre-selection only.
Specifications subject to the latest revision; need other technical documents? Ask our engineers.