Growatt APX 55 kWh – energy storage kit
Growatt APX 55 kWh is a ready-made high-voltage (HV) energy storage kit (LiFePO4 batteries) with a capacity 55 kWh, composed of 11 modules APX 5.0P-B1, from the offer PVGroup.pl. Growatt This model is a high-voltage (HV) LiFePO4 energy storage system with a modular architecture. It stores surplus energy from photovoltaics and releases it in the evening and in emergency mode, working in conjunction with MOD-XH BP and MOD-XH hybrid inverters. MID-XH. BMS manages the operation and safety of the cells. The storage unit is matched to an inverter with a compatible voltage class—in this case, three-phase hybrid inverters. Growatt MID TL3-XH.
This datasheet provides complete information about the model: operating principle, compatible inverters, expansion options, full specifications from the manufacturer's catalog, and capacity selection. All parameters are taken from the official documentation. Growatt — we provide them to facilitate selection and avoid purchasing errors. If you still have questions, our technical team will provide free assistance in selecting the right storage for your inverter, capacity for your energy consumption, and other components for your photovoltaic installation.
Expert opinion
Opinion of the technical team PVGroup.pl
"Growatt APX 55 kWh This is a robust high-voltage (HV) LiFePO4 energy storage device, which we recommend for expanding your photovoltaic system with increased self-consumption and backup power. Compatibility between the battery voltage class and the inverter is crucial when purchasing—we'll be happy to verify the storage device's suitability for your system and help you choose the right capacity for your actual energy consumption.
— Technical team PVGroup.pl
How energy storage works Growatt APX 55 kWh
Growatt APX 55 kWh is a high-voltage (HV) LiFePO4 energy storage system with a modular architecture. It stores surplus energy from photovoltaics and releases it in the evening and in emergency mode, working in conjunction with MOD-XH BP and hybrid inverters. MID-XH. BMS manages the operation and safety of the cells.
In practice, the storage facility increases the self-consumption of photovoltaic energy: instead of feeding surplus energy into the grid at a low price and buying it back at a higher price in the evening, you consume your own energy when you need it. Combined with a hybrid inverter, the storage facility also provides emergency power to key circuits during grid outages.
Who is this energy storage for?
- Prosumers in net-billing — the warehouse shortens the return on installation, increasing self-consumption.
- Homes and businesses with a hybrid inverter compatible voltage class.
- People who care about emergency power supply during power outages.
- Installations expanded in stages — you add capacity as needed.
The most important features
- Cobalt Free Lithium Iron Phosphate (LFP) cells — safe and durable.
- Depth of Discharge DOD 90% — actual capacity used
- Integrated BMS — voltage, temperature protection and cell balancing
- Modular construction — easy capacity expansion
- Degree of protection IP66
Compatible inverters and accessories
Growatt APX 55 kWh is a high voltage (HV) storage system designed to work with: three-phase hybrid inverters Growatt MID TL3-XHThe power module is selected for the system APX 98034-P2. A base is required for assembly. APX (APX Battery Base). Warning: The battery voltage class (LV/HV) must be compatible with the inverter - we will confirm the selection before purchase. You can find the full range of inverters at inverter categories.
What's included in the kit?
Growatt APX 55 kWh to ready-made energy storage kit with a capacity of 55 kWh, composed of 11× battery module APX 5.0P-B1 (high voltage (HV)) with the necessary equipment for start-up: power module APX 98034-P2 and base APX (APX Battery Base). The set is prepared for cooperation with three-phase hybrid inverters. Growatt MID TL3-XH – It has been matched to the voltage class (HV) and capacity, allowing the installer to install it without selecting separate components. Capacity can be expanded with additional modules later if necessary.
Selection of warehouse capacity
Modular expansion: 1–6 modules of 5 kWh = system 5–30 kWh; you scale capacity to your needs. We select capacity based on daily energy consumption and the investment goal: to increase self-consumption, a storage system covering evening consumption is usually sufficient, while for real emergency power, higher capacity and power are selected. Contact info@pvgroup.pl – we will calculate the right size for your installation and inverter.
Growatt APX 55 kWh and savings and self-consumption
In net billing, energy fed into the grid is priced lower than the energy you later buy back. Energy Storage Growatt APX 55 kWh This balance is reversed: surplus panels, which would otherwise be fed into the grid at a low price, are stored at home and used in the evenings and nights. This increases self-consumption, reduces electricity bills, and significantly shortens the return on investment in photovoltaics. Furthermore, there's a value that's difficult to quantify in złoty—energy security: in the event of a grid outage, the storage unit, along with a hybrid inverter, maintains power to the most important circuits in your home or business. The higher energy prices and the greater daily consumption, the faster the storage unit pays for itself—which is why, when selecting a system, we consider your actual consumption profile, not just the system's power output.
parameters Growatt APX 55 kWh in practice
A high depth of discharge (DOD 90%) allows for the utilization of almost the entire capacity. Cobalt Free Lithium Iron Phosphate (LFP) cells are thermally safe and resistant to degradation.
Construction: IP66 protection class, operating temperature range -10°C~50°C °C, weight 50 kg with dimensions 690/185/295 (W/D/H) - battery module APX 5.0P-B1 mm.
Safety - LiFePO4 cells
Growatt APX 55 kWh built on lithium-iron-phosphate (LiFePO4) cells. This is the safest chemistry commonly used in home energy storage today: it is thermally resistant, cobalt-free, and much less susceptible to thermal runaway than older NMC cells. A built-in battery management system (BMS) continuously monitors individual cell voltages, temperatures, and charge and discharge currents, disconnecting the storage device in the event of an abnormality and balancing the cells for longer life. Combined with long cyclic durability, this translates into years of maintenance-free storage operation.
Installation and operation
Growatt APX 55 kWh Installed by a qualified installer according to the manufacturer's instructions. The IP66 protection rating determines the installation location; pay attention to the operating temperature range and ventilation. The warehouse is managed by BMS and inverter - after starting, its status (SOC, charging, discharging) can be seen remotely in the application ShinePhoneThe device is covered by a European service warranty (10 years according to the manufacturer); we issue a Polish VAT invoice with each order.
Key specifications
| Growatt APX 55 kWh — specification | |
|---|---|
| Type | LiFePO4 (HV) energy storage kit |
| Set capacity | 55 kWh |
| Number of modules | 11 × APX 5.0P-B1 |
| Cell chemistry | Cobalt Free Lithium Iron Phosphate (LFP) |
| Nominal voltage | 385 V |
| Depth of Discharge (DOD) | 90 % |
| Level of security | IP66K |
| Charging temperature | -10°C~50°C °C |
| Discharge temperature | -10°C~50°C °C |
| Compatible inverters | three-phase hybrid inverters Growatt MID TL3-XH |
| Management / BMS | power module APX 98034-P2 |
| Warranty | European service warranty (10 years according to the manufacturer) |
Full parameters in the manufacturer's catalog card.
What makes the series stand out - Growatt APX 55 kWh
Door Line APX is a high-voltage modular storage for home and business 3-phase hybrids - compact modules 5 kWh foldable into a system of up to 30 kWh.
What to pay attention to when choosing Growatt APX 55 kWh
The most important thing when buying a warehouse is the fit voltage classes battery to inverter: this model is high voltage (HV), so it works with three-phase hybrid inverters Growatt MID TL3-XH. A battery of the wrong class won't work. It's also worth planning the target capacity right away (modular expansion is inexpensive, but it's more convenient to size the system in advance) and a mounting location with appropriate temperature and ventilation. If in doubt, send us the inverter model—we'll confirm the warehouse selection before purchase.
Monitoring — Growatt APX 55 kWh
Magazine Growatt APX 55 kWh you monitor through the inverter to which it is connected: application ShinePhone and the portal ShineServer show state of charge (SOC), charge and discharge power, and operation history, with failure notifications. For installers servicing multiple facilities Growatt provides service accounts with an overview of the entire fleet from a single panel.
About the brand Growatt
Growatt is one of the world's largest manufacturers of photovoltaic inverters and energy storage systems, present in the PV market for over a decade, with an extensive service network in Europe. PVGroup.pl we offer equipment Growatt from official European distribution, with full documentation, European service warranty and technical support in Polish.
See the model Growatt APX 55 kWh from the official European distributor Growatt: product page on growatt.tech.
Why is it worth buying at PVGroup.pl
- Original equipment from official European distribution — full documentation and certificates.
- European service warranty (10 years according to the manufacturer) and a Polish VAT invoice.
- Selecting a storage unit for the inverter and installation — We'll help you choose the right voltage class and capacity. Questions: info@pvgroup.pl.
- B2B wholesale prices — discounts for installers and companies after logging in.
Delivery, warranty and B2B support
Growatt APX 55 kWh We ship from an EU warehouse (Raben, DPD, Dachser) to companies and construction sites throughout Poland and the European Union. Every order is accompanied by a Polish VAT invoice, and the product is covered by a European service warranty (10 years according to the manufacturer) with our complaint handling service. After logging in, installers see discounted wholesale net prices. For a quote for the inverter + warehouse package, please contact info@pvgroup.pl.
Most frequently asked questions
Which inverters is it suitable for? Growatt APX 55 kWh?
This is a high-voltage (HV) storage system designed to work with: three-phase hybrid inverters Growatt MID TL3-XH. The battery voltage class must match the inverter.
What is the capacity and can I expand it?
Capacity is 55 kWhModular expansion: 1–6 modules of 5 kWh = system 5–30 kWh; you scale the capacity to your needs.
What cell chemistry and what lifespan Growatt APX 55 kWh?
Cobalt Free Lithium Iron Phosphate (LFP) cells, DOD 90%. This is a safe and durable technology.
Czy Growatt APX 55 kWh provides emergency power?
Yes - when combined with a hybrid inverter, the storage unit supports selected circuits in the event of a grid failure (inverter backup/EPS function).
Where can I install it? APX 55 kWh?
IP66 protection rating. Installation should be performed by an installer according to the instructions; pay attention to the operating temperature range and ventilation.
What warranty does it have? Growatt APX 55 kWh?
The product is covered by a European service warranty (10 years according to the manufacturer); we issue a Polish VAT invoice for the order.
How to monitor your battery charge APX 55 kWh?
Battery status (SOC), charging and discharging are visible in the application ShinePhone and the portal ShineServer — through the inverter to which the storage is connected.
What is the difference between a low voltage (LV) and a high voltage (HV) battery?
LV (approx. 48–51 V) works with inverters off-grid and some hybrids; HV (hundreds of V) with three-phase hybrids. The battery must match the inverter's voltage class - otherwise it won't work.
Net wholesale prices with a B2B discount are visible after logging in. Log in to see net prices with a wholesale discount.
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