Growatt APX 35 kWh – first configuration with two clusters
Growatt APX 35 kWh this is the first family configuration Growatt APX HV Battery 2.0, which doesn't fit in a single column. One column accommodates one master module and five battery modules, or 30 kWhThirty-five kilowatt-hours require a second cluster—two modules in total APX 5.0M-B3 and five modules APX 5.0P-B3.
The manual describes this mode as a parallel dual-cluster installation and only allows for floor mounting. This is a configuration requirement, not a recommendation: two clusters must be placed side by side on the floor, never on a wall. This capacity is also the first without a manufacturer's model number—the card only covers the 5 to 30 range. kWh.
Set composition 35 kWh
Configuration 35 kWh are two clusters working in parallel, seven elements in total: two master modules APX 5.0M-B3 i five battery modules APX 5.0P-B3Each cluster has its own master module with battery management and its own capacity of 5 kWh in this module.
- Cluster 1 - 20 kWh (APX 20.0M-S3): 1 × APX 5.0M-B3 + 3 × APX 5.0P-B3.
- Cluster 2 - 15 kWh (APX 15.0M-S3): 1 × APX 5.0M-B3 + 2 × APX 5.0P-B3.
We've chosen the division so that each column individually matches the configuration on the catalog card. The card doesn't dictate this, and the columns don't have to be of equal capacity—we confirm the configuration when ordering.
The base is included. The master module comes pre-assembled with the base, and the packing list includes the base and wall mount—no need to purchase a stand or a separate battery management box.
A three-phase smart meter is included in the set. This is a three-phase smart meter Growatt for energy measurement, index 00005 in our catalogue. It does not need to be purchased separately. See the meter card
Single-phase installation? This kit will replace your meter at no extra charge. It has a three-phase meter, and the series instruction manual (chapter 1.1) mentions cooperation APX 2.0 also with single-phase inverters MIN-XH i MIN-XH2If this kit is for a single-phase installation, we will replace the meter with a single-phase one at no extra charge—just specify this in the "Order Notes" field when placing your order. The replacement applies to this kit: the master module and battery module, purchased separately, do not include the meter.
The complete set of cables runs in the master module — the cascade cabling cannot be purchased separately; this is commercial information PVGroup.pl, not a record from a catalog card. A separate item remains connecting element (adapting piece), i.e., the mechanical connection of two columns: the master module accessories bag contains only M6 expansion bolts and M4 screws. This item is not in the catalog today PVGroup.pl — please contact us before ordering.
How many clusters can be connected? The instructions provide for a cascade of two or three systems APX M-S3, and the limit is set by the inverter: series MID-HU supports up to three clusters, series MID-XH – up to two. For the MOD series, the manual doesn't specify this, and we haven't verified it. This configuration runs on two clusters, so it falls within both documented limits.
Who is this capacity for?
- Objects that exceed the capacity of a single column — the smallest capacity available only in a dual-cluster configuration.
- Expansion of existing installation 30 kWh — the first cluster remains unchanged, the second one is added with its own master module.
- Small production and service plants — daily consumption covered from the warehouse, with a reserve for maintenance.
Key specifications
| Growatt APX 35 kWh — specification | |
|---|---|
| Number of modules | 2 × APX 5.0M-B3 +5× APX 5.0P-B3 |
| Set type | APX 20.0M-S3 + APX 15.0M-S3 |
| Cell chemistry | LFP |
| Nominal voltage | 400V (1-phase) / 750V (3-phase) |
| Battery voltage range | 350-550V (1-phase) / 660-980V (3-phase) |
| Max charge and discharge current | 28,6 A (1-phase) / 22,73 A (3-phase) |
| Management / BMS | APX 5.0M-B3 |
| Communication | CAN / RS485 |
| Level of security | IP66K |
| Assembly | floor |
| Working temperature range | −20 °C … 55 °C |
| Cooling | natural |
| Dimensions (W×H×D) | 590 × 1220 × 255 mm + 590 × 955 × 255 mm |
| Weight | 331,4 kg |
| Development | 35–60 kWh |
| Compatible inverters | MIN-XH, MIN-XH2, MOD, MID |
| Warranty | 10 years |
The values are from the catalog card Growatt APX 5.0-30.0M-S3 (revision 2026-07) and from the series user manual; the cells are recorded on the data sheet as Cobalt Free Lithium Iron Phosphate. The data sheet does not provide maximum or peak power for a dual-cluster configuration, therefore these rows are not included in the table. The data sheet does not include depth of discharge, round-trip efficiency, or number of cycles.
Certificates and standards
Catalog card lists for the system APX 5.0-30.0M-S3 following standards and certificates: IEC62619(Cell&Pack) / IEC60730 / IEC62477-1 / IEC62040-1 / CE(EN61000) / UN38.3 / IEC60529 / REACH / CEC. We will send the certificate in the form of a document on request.
Installation and working conditions
The dual-cluster configuration is only permitted for floor mounting, according to the user manual. When planning the space, you should plan for two columns, each 590 mm wide and 255 mm deep, with heights corresponding to their capacities.
- Degree of protection IP66 and natural cooling, without fans.
- Operating temperature range from -20 to 55 °C — the card lists the heating foil as part of the system equipment.
- Relative humidity 5–95% and work up to 4000 m above sea level.
- Distance between columns 150 mm, and from the wall 25–40 mm - dimensions from the instruction manual for a two-column system.
Compatible inverters
The user manual indicates cooperation with single-phase inverters of the MIN-XH and MIN-XH2 series, and with three-phase inverters - with the MOD and MIDThese are the only families listed in the manufacturer's document and we only declare them.
The inverter is the second system limitation, next to battery capacity. The data sheet stipulates that the system's power is limited by the inverter's maximum charge and discharge power. Submit your inverter model and we'll confirm the kit before purchase. If the inverter isn't already in your project, start with the three-phase hybrid inverters category.
B2B warranty and support
The catalog card gives the series APX 2.0 ten-year warranty. Equipment purchased in PVGroup.pl is covered by a European service warranty, technical documentation for downloadInstallers and integrators can log in and see net prices with a wholesale discount. Lithium cells are subject to hazardous goods transport regulations.
Adjacent capacities of this series: Growatt APX 30 kWh and Growatt APX 40 kWh. Full range of magazines in the category Energy storage.
Most frequently asked questions
Why 35 kWh requires two master modules?
Because one column can accommodate a maximum of one master module and five battery modules, i.e. 30 kWhAny capacity above this value requires a second cluster with its own master module. APX 5.0M-B3.
Do I need to purchase additional equipment for two-cluster operation?
No cables - the complete wiring is in the master module (commercial information PVGroup.pl). A separate item is the connecting element (adapting piece), which mechanically connects the two columns; the master module accessories bag only includes M6 expansion bolts and M4 screws. This item is not currently in the catalog. PVGroup.pl — please contact us before ordering.
What is the model number of this configuration?
The manufacturer did not assign it a designation. The catalog card covers a range from 5 to 30 kWh, i.e. models from APX 5.0M-S3 do APX 30.0M-S3. Configurations over 30 kWh we describe it as two-cluster and provide a modular composition.
How much power does a 35-story magazine have? kWh?
The datasheet doesn't provide power specifications for dual-cluster configurations. We know the parameters for individual clusters; we don't declare the total because it's not included in the manufacturer's documentation.
What exactly is included in the kit?
two master modules APX 5.0M-B3 with bases and five battery modules APX 5.0P-B3, and a three-phase smart meter Growatt, index 00005 in our catalogue. The meter does not need to be purchased separately.
I have a single-phase installation - does this kit make sense?
Yes. The series user manual (chapter 1.1) mentions cooperation APX 5.0-30.0M-S3 with single-phase inverters MIN-XH i MIN-XH2This kit includes a three-phase meter. If your installation is single-phase, we'll replace it with a single-phase meter at no extra charge. Simply specify this in the "Order Notes" field when placing your order. This replacement is for the kit; the master module and battery module, which are purchased separately, do not include the meter.
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