Batteries for photovoltaics Deye MS C&I
Deye MS C&I is a high voltage battery range from Deye. This category lists 4 Deye MS C&I products with a usable capacity of 215 kWh. Guide
Suitable for: Commercial energy storage.
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Deye MS C&I at a glance
Deye MS C&I is aimed at commercial and industrial sites, where it is used for peak shaving, higher self-consumption of large PV systems and backup of critical loads. The battery management system talks to the inverter over RS485, CAN, so the inverter must list Deye MS C&I as an approved battery before you order. Protection ratings in this range: IP54. Units rated IP54 or higher can be mounted outdoors within the temperature limits in the datasheet. The range includes separate battery modules and control units, so a system can start at the minimum configuration and grow later within the stack limits that Deye specifies.
Tip from practice
On commercial sites, start from the load profile: the peak you want to shave in kW and the energy you need to shift in kWh. The ratio between the two decides the configuration far more than the nominal capacity on the datasheet.
How to choose a Deye MS C&I configuration
The table lists every Deye MS C&I product in this category with the key figures we hold for it. Choose in this order: inverter compatibility first, then usable capacity against evening and night consumption, then power and siting.
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Deye MS C&I products compared
| Product | Usable capacity | Communication | IP rating |
|---|---|---|---|
| Deye MS-EMS Energy Management Controller (C&I) | - | RS485, CAN | IP54 |
| Deye MS-TS500-2-A Off-grid Transfer Switch (C&I) | - | RS485, CAN | IP54 |
| Deye MS-G215-2H2 100kW/215kWh C&I Energy Storage System | 215 kWh | RS485, CAN | IP54 |
| Deye MS-GS215-2H2 100kW/215kWh C&I Storage System (with PV) | 215 kWh | RS485, CAN | IP54 |
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Frequently asked questions about Deye MS C&I
What usable capacity does Deye MS C&I offer?
The Deye MS C&I products listed here offer 215 kWh of usable capacity, and the modular design lets you add capacity later. Compare usable capacity rather than nominal capacity when you size the system.
Is Deye MS C&I a low voltage or a high voltage battery?
Deye MS C&I is a high voltage battery. It needs an inverter with a high voltage battery input and does not work on a 48 V input.
Which inverters work with Deye MS C&I?
Any inverter that lists Deye MS C&I on its approved battery list. The battery communicates over RS485, CAN. Matching the voltage is not enough on its own, because the inverter and the battery management system must use the same protocol and firmware.
Can a Deye MS C&I system be expanded later?
Yes. Additional modules can be added within the maximum stack size that Deye allows. Keep new modules in the same product family and firmware generation, and expand while the existing pack is still relatively new.
Can Deye MS C&I be installed outdoors?
Units rated IP54 or higher can be installed outdoors within the temperature range in the datasheet. The ratings in this range are IP54.
What is Deye MS C&I used for?
For commercial and industrial sites: peak shaving, higher self-consumption of large PV systems and backup of critical loads.
Where can I buy Deye MS C&I batteries?
ONSA Plus supplies Deye MS C&I to installers and resellers across Europe. This category lists 4 Deye MS C&I products with current prices and availability, and there is no minimum order.
Usable capacity, backup behaviour and inverter compatibility depend on the specific inverter model, the wiring of the installation and the manufacturer's approved combination list.
About ONSA Plus
Why installers across Europe buy storage from us
ONSA Plus is a European B2B distributor of photovoltaics, battery storage, heat pumps and EV charging stations. In our own EU warehouses we keep over 1,500 products from 25+ brands, including Huawei, Solis, SolaX and Dyness.
We are not just a trading company. We design and service energy systems ourselves, so we answer questions on battery sizing, inverter pairing and backup wiring from engineering practice, not from a catalogue. There is no minimum order, so you buy what the job needs.
