H1-6.0-G2
- 6 kW, single-phase, 2 MPPT
- off-grid peak 7.2 kVA / 60 s
- 80–480 V batteries, IP65
- up to 10 inverters in parallel
Fox ESS · backup power
Fox ESS inverters and batteries installed turnkey
High-voltage heated batteries that can stand in an unheated room. Single- and three-phase hybrid inverters and all-in-one systems. We size the kit to your consumption, then install and configure it.
IP65inverters and EP6, Mira, CQ7 batteries: garage or boiler-room installs
−25 °Cheated batteries charge even below freezing
<10 msswitch-over to battery, under 4 ms on the P100
6,000cycles of LiFePO4 battery life, per the manufacturer
Kit finder
Which Fox kit suits you
Tap the option that fits you to see the kit.
Flat
H1-6.0-G2 + EP6 Plus or Mira M6
A 6 kW single-phase inverter with a heated high-voltage battery. The battery can go on a balcony or in a hallway, and capacity grows in modules.
Power6 kW, single-phase
Battery5.76 kWh, up to 23 kWh
Switch-over<10 ms
ProtectionIP65, heated
From the battery1 module — up to ≈5.5 kW, 2 modules for the full 6 kW
Solar2 MPPT, add panels later
A kit is a starting point. We size it exactly from a photo of your distribution board and the list of appliances that must keep running. We quote the price after the calculation.
Range
H1 G2
KH
P3
P3 Plus
EP6 Plus · Mira M6
CQ7
CQ16
P100
Models we install
Single-phase hybrid inverters
KH8 · KH10
- 8 or 10 kW, single-phase
- 3–4 MPPT for a large solar array
- <6 ms switch-over
- IP65
Three-phase hybrid inverters
P3-12 · 15 · P3 Pro 20 · 30
- 12–30 kW, three-phase, 3 MPPT
- 100–800 V batteries (P3 Pro — 150–800 V)
- meter included, IP65
- P3-12: up to 17.4 A per phase off-grid
P3-50 · 80 · 125 Plus
- 50–125 kW for business
- with CQ16 batteries and a CQ BOX
LiFePO4 batteries
5.76 kWh
- 192 V, up to 4 modules — 23 kWh
- heated, IP65, fire protection
- for H1 and KH
7.02 kWh modules
- Master (BMS) + Slave, up to ≈84 kWh per P3
- heated, IP65
- for three-phase P3
16.07 kWh
- 64–241 kWh systems with a CQ BOX
- IP20, indoors only
- for business
All-in-one
P100-6 · 8 · 10-H
- inverter + 10.24 kWh battery in one unit
- <4 ms switch-over, IP66
- 113 kg, up to 3 systems in parallel
- operates from −20 to +55 °C
Comparison
Fox ESS and Deye: how they differ
We install both brands. The tables list datasheet figures only, with no ratings: which is better for you depends on where it goes, your budget and whether you plan to add solar panels.
Flat, single-phase, 6 kW
| Parameter | Fox H1-6.0-G2 + EP6 Plus | Deye SUN-6K-SG05LP1 + SE-G5.1 Pro-B |
|---|---|---|
| Battery type | high-voltage, 192 V | low-voltage, 51.2 V |
| Max battery current (inverter) | up to 40 A | up to 135 A |
| Off-grid peak power | 7.2 kVA for 60 s | 2× rated power for 10 s |
| Switch-over to battery | <10 ms | not stated in the datasheet |
| Solar input | up to 12 kW, 2 MPPT, up to 600 V | 9.6 kW input (panels up to 12 kW), 2 MPPT, up to 500 V |
| Battery protection | IP65, heated | IP20, indoors only |
| Charging in the cold | from −25 °C with heating | from 0 °C |
| Capacity expansion | up to 4 modules, 23 kWh | up to 64 modules (≈327 kWh) |
| Inverters in parallel | up to 10 | up to 16 |
| Inverter operating temperature | −25…+60 °C | −40…+60 °C |
House, three-phase, 12 kW
| Parameter | Fox P3-12.0-SH + CQ7 | Deye SUN-12K-SG04LP3 + SE-G5.1 Pro-B |
|---|---|---|
| Battery type | high-voltage, 100–800 V | low-voltage, 40–60 V |
| Max battery current (inverter) | up to 50 A | up to 240 A |
| Battery for full power off-grid | from 250 V — 5 CQ7 modules (≈35 kWh) | ≈3 SE-G5.1 Pro-B modules (≈15 kWh) |
| Unbalanced load | up to ⅓ of rated power per phase (≈4 kW) | up to 50% of rated power per phase (≈6 kW) |
| Off-grid peak power | 14.4 kVA for 60 s | 2× rated power for 10 s |
| Solar input | up to 22.5 kW, 3 MPPT, up to 1000 V | up to 18 kW, 2 MPPT, up to 800 V |
| Battery protection | IP65, heated (CQ7) | IP20 (SE-G5.1 Pro-B) |
| Inverters in parallel | up to 10 on-grid, up to 4 off-grid | up to 10 |
Where Fox is stronger
- high-voltage battery: 3–5 times lower current, thinner DC cables and lower losses in them
- heated IP65 batteries can stand in an unheated room
- more solar input; on the three-phase P3, 3 MPPT trackers versus 2
Where Deye is stronger
- the three-phase inverter delivers more per phase off-grid
- more inverters in parallel, works down to −40 °C
- a short 2× rated peak for motor starts
- a small battery stack already gives full power; low-voltage batteries are common and easy to add
Figures from official Fox ESS and Deye datasheets (2025–2026). Deye also has high-voltage ranges and IP65 batteries; the tables show the kits most common in Ukraine.
Our installation
A house in Pidhirtsi on a Fox P3
InverterP3-12.0-SH, three-phase
BatteriesCQ7-M + CQ7-S, 14 kWh, heated
BoardHager, grid / inverter changeover switch
InstalledNovember 2026
The whole house runs from the inverter output. Off-grid with no sun, two CQ7 batteries deliver up to ≈5.5 kW in total and about 4 kW per phase; the full 12 kW comes from solar or with a battery of 5+ modules. So we explain what not to switch on together during an outage.
Fox ESS FAQ
Fox ESS or Deye: which to choose?
We install both. Fox: high-voltage heated IP65 batteries and more solar input. Deye: more power per phase off-grid, more inverters in parallel and full power from a smaller battery stack. The site, the load and the budget decide; we size it from a photo of your distribution board.
High-voltage (HV) or low-voltage (LV) battery: which is better?
A high-voltage battery runs at lower current, so cables are thinner and cable losses lower. 48 V low-voltage batteries are more common, easier to add later and reach full inverter power with fewer modules. Fox ESS makes high-voltage batteries, so we pair them with Fox inverters.
Can the battery go in an unheated garage?
The heated versions of EP6 Plus, Mira M6 and CQ7 (the ones we install) are IP65 and, per the datasheet, charge from −25 °C; without heating, from 0 °C. The heater draws energy from the battery itself. The CQ16 is IP20 and needs a room kept above freezing.
Can I add solar panels later?
Yes, every Fox hybrid inverter has MPPT inputs for panels. We add them as a second stage without redoing the board.
Will the whole house run from a three-phase P3?
Yes, as long as the load stays within the inverter rating. The P3-12 delivers up to 12 kVA in total and up to 17.4 A (≈4 kW) per phase, but from the battery only a stack of 250 V or more (5+ CQ7 modules) gives full power; with two modules it is up to ≈5.5 kW. We spread appliances across the phases and tell you what not to run together.
What warranty does Fox ESS give?
Inverters: 5 years from installation plus another 5 under FoxPro if the inverter is registered on the Fox warranty portal within 36 months of commissioning. FoxPro does not cover all-in-one systems; for the P100 we confirm terms with the distributor. EP and CQ batteries: 10 years with an energy throughput cap (EP6 — 18.43 MWh and at least 60% capacity, CQ7 — 26.90 MWh and at least 70%). The manufacturer requires FoxCloud registration within 3 months for the inverter and 6 months for batteries, and the system must stay online (a battery no more than 6 months offline per year). We register it during setup and handle warranty claims for you.
How much does a kit cost?
It depends on power, capacity and installation. We give a preliminary price from a photo of your distribution board. A site visit costs from 1,500 UAH in Kyiv and from 2,000 UAH in Kyiv Oblast; this amount is credited toward the job.
Contact
Tell us what needs doing and we'll get back to you during business hours
Send a request
Tell us about the job in a short form — from replacing a smart relay to a full rewire. We'll send a preliminary estimate within a day.