Description
Growatt APX 5.0P-B3 – energy storage battery 5 kWh
Growatt APX 5.0P-B3 is a high-voltage (HV) energy storage battery (LiFePO4 cells) with a capacity of 5 kWh from the Growatt.tech range. This model is an expansion module of the APX Gen 2.0 high-voltage (HV) LiFePO4 energy storage system. It adds 5 kWh of capacity to a stack built around an APX 5.0M-B3 Master module, which manages the whole battery and communicates with the three-phase MOD-HU hybrid inverter. An energy storage battery is matched to an inverter of the same voltage class — in this case: three-phase Growatt MOD-HU hybrid inverters (APX Gen 2.0 systems).
This page gathers the complete information about the model: how it works, compatible inverters, expansion options, the full specification from the manufacturer’s datasheet and capacity sizing. All parameters come from official Growatt documentation — we list them to make selection easier and to avoid mistakes at purchase. If questions remain after reading, our technical team will help match the energy storage battery to your inverter, the capacity to your energy use and the remaining components of the PV installation — write to info@growatt.tech.
This is an expansion module of the APX Gen 2.0 system. It does not work on its own — it extends a stack that already has an APX 5.0M-B3 Master module. One Master takes up to five expansion modules, which is how the system reaches 30 kWh.
Expert commentary
“The Growatt APX 5.0P-B3 is a solid high-voltage (HV) LiFePO4 energy storage battery, which we recommend for extending a PV installation with higher self-consumption and backup power. The key point at purchase is matching the battery’s voltage class to the inverter — we are happy to verify the pairing with your system and help size the capacity for your real energy use.”
— Growatt.tech technical team
How the Growatt APX 5.0P-B3 energy storage battery works
Growatt APX 5.0P-B3 is an expansion module of the APX Gen 2.0 high-voltage (HV) LiFePO4 energy storage system. It adds 5 kWh of capacity to a stack built around an APX 5.0M-B3 Master module, which manages the whole battery and communicates with the three-phase MOD-HU hybrid inverter.
In practice, an energy storage battery increases the self-consumption of your solar power: instead of exporting surplus energy to the grid at a low price and buying it back at a higher price in the evening, you use your own energy when you need it. Combined with a hybrid inverter, the energy storage battery also provides backup power for key circuits during a grid outage.
Key features
- LiFePO4 cells — safe and durable.
- Integrated BMS — voltage and temperature protection plus cell balancing
- Modular design — easy capacity expansion
Compatible inverters and accessories
Growatt APX 5.0P-B3 is a high-voltage (HV) energy storage battery, designed to work with: three-phase Growatt MOD-HU hybrid inverters (APX Gen 2.0 systems). Battery management relies on the APX 5.0M-B3 Master module, which acts as the battery management system for safe operation. Note: the voltage class of the battery (LV/HV) must match the inverter — we will confirm the pairing before you order. You will find the full range of inverters in the shop.
Sizing the energy storage capacity
Modular expansion: one Master module (APX 5.0M-B3) plus up to five expansion modules (APX 5.0P-B3) of 5 kWh each = a 5-30 kWh system. Capacity is matched to the daily energy consumption and the goal of the investment: to increase self-consumption, an energy storage battery covering the evening load is usually enough, while real backup power calls for more capacity and power. Write to info@growatt.tech — we will size the system for your installation and inverter.
Growatt APX 5.0P-B3 parameters in practice
LiFePO4 cells are thermally safe and resistant to degradation.
Installation and operation
Growatt APX 5.0P-B3 should be installed by a qualified installer according to the manufacturer’s manual. pay attention to the operating temperature range and ventilation. The energy storage battery is managed by the BMS and the inverter — once commissioned, its status (SOC, charging, discharging) can be checked remotely in the ShinePhone app. The product is covered by a European service warranty of 10 years, per the manufacturer’s terms.
Key technical data
| Growatt APX 5.0P-B3 — specification | |
|---|---|
| Type | LiFePO4 energy storage battery (HV) |
| Rated capacity | 5 kWh |
| Capacity (module) | 5 kWh |
| Cell chemistry | LiFePO4 |
| System voltage (HV) | 400 V (single-phase) / 750 V (three-phase) |
| Expansion | 1 Master module + 0-5 expansion modules = 5-30 kWh |
| Role in the system | Expansion module (requires a Master) |
| Compatible inverters | three-phase Growatt MOD-HU hybrid inverters (APX Gen 2.0 systems) |
| Management / BMS | APX 5.0M-B3 Master module, which acts as the battery management system |
| Warranty | European service warranty (10 years per manufacturer) |
Full parameters are listed in the manufacturer’s datasheet.
What to check when selecting the Growatt APX 5.0P-B3
The most important thing when buying an energy storage battery is matching the voltage class of the battery to the inverter: this model is high-voltage (HV), so it works with three-phase Growatt MOD-HU hybrid inverters (APX Gen 2.0 systems). A battery of the wrong voltage class will not work. It is also worth planning the target capacity up front (modular expansion is easy, but sizing the system from the start is more convenient) and the installation spot with a suitable temperature range and ventilation. If in doubt, send us your inverter model at info@growatt.tech — we will confirm the pairing before you order.
Warranty and B2B support
Growatt APX 5.0P-B3 is covered by a European service warranty of 10 years, per the manufacturer’s terms. Log in to view trade prices. For a quote on a complete inverter + energy storage package, write to info@growatt.tech and our team will prepare an offer.
Frequently asked questions
Can the Growatt APX 5.0P-B3 work on its own?
No. It is an expansion module: it needs a stack with an APX 5.0M-B3 Master module, which acts as the battery management system. One Master supports up to five expansion modules.
Which inverters does the Growatt APX 5.0P-B3 work with?
It is a high-voltage (HV) energy storage battery, designed to work with three-phase Growatt MOD-HU hybrid inverters (APX Gen 2.0 systems). The battery’s voltage class must match the inverter.
What is the capacity and can I expand it?
This model offers 5 kWh of capacity. Modular expansion: one Master module (APX 5.0M-B3) plus up to five expansion modules (APX 5.0P-B3) of 5 kWh each = a 5-30 kWh system.
What cell chemistry and cycle life does the Growatt APX 5.0P-B3 offer?
LiFePO4 cells. A safe and durable cell technology.
Does the Growatt APX 5.0P-B3 provide backup power?
Yes — combined with a hybrid inverter, the energy storage battery keeps selected circuits running during a grid outage (the inverter’s backup/EPS function).
Where can I install the APX 5.0P-B3?
Installation should be carried out by a qualified installer according to the manual; pay attention to the operating temperature range and ventilation.
What warranty does the Growatt APX 5.0P-B3 carry?
The product is covered by a European service warranty of 10 years, per the manufacturer’s terms.
How do I monitor the state of charge of the APX 5.0P-B3?
Battery status (SOC), charging and discharging are all visible in the ShinePhone app and the ShineServer portal — through the inverter the energy storage battery is connected to.
What is the difference between a low-voltage (LV) and a high-voltage (HV) battery?
LV batteries (around 48-51 V) work with off-grid inverters and some hybrid inverters; HV batteries (hundreds of volts) work with three-phase hybrid inverters. The battery must match the inverter’s voltage class — otherwise the system will not work.
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