Sigenergy SigenStack Battery Controller M2-0.5C BOOST
Sigenergy SigenStack Battery Controller M2-0.5C BOOST
Sigenergy SigenStack Battery Controller M2-0.5C BOOST
Sigenergy SigenStack Battery Controller — M2-0.5C or M2-0.5C BOOST — and on most systems only the BOOST will start.
The battery controller is the interface between a SigenStack tower and the hybrid inverter in front of it: 180 A in and 180 A out, on a 550 to 1,100 V window, with CAN to the inverter.
About the Sigenergy SigenStack Battery Controller
The suffix is the part that catches people out. BST stands for boost, and a controller carrying it can raise the battery voltage to the inverter's start-up voltage. One without it cannot.
That turns into a hard rule. If the system has PV, the BST controller is always the one to fit. If it has no PV and fewer than nineteen battery modules, BST is still essential. Only a large, PV-free system can use the plain M2-0.5C.
The 0.5C in both names is the nominal charge and discharge rate: 157 A nominal on the 0.5C controllers against 314 A on the 1C.
What does this fit?
This is the controller that stands between a SigenStack tower and the inverter.
One controller per system, sitting on the MAIN base. The choice between them is not a trim level: BST can boost the battery up to the inverter's start-up voltage, and the plain M2-0.5C cannot. On any system with PV, BST is essential; without PV it is essential below nineteen battery modules.
The products it is ordered with:
What the job needs
The details that decide whether this suits the system:
- One controller per system, mounted on the MAIN base.
- BST is essential on any system with PV. Without PV, BST is essential below nineteen battery modules.
- Both move up to 180 A to and from the inverter on a 550 – 1,100 V window, over CAN.
- Nominal battery charge and discharge current is 157 A on the 0.5C controllers. The 1C BOOST controller doubles that to 314 A.
- 768 × 248 × 363 mm. The plain M2-0.5C is 50 kg and the BOOST version 60 kg.
- Compatible with the Sigen Hybrid Inverter series.
Where this earns its place
The SigenStack Battery Controller is specified most often for these jobs.
Things worth knowing about this listing
- BST stands for boost. A SigenStack BC with the BST suffix can boost the battery voltage to the inverter start-up voltage. If there is no PV and fewer than nineteen batteries in the system, the BST controller is essential; for systems with PV the BST controller is always essential.
Sigenergy M2-0.5C BOOST technical data
Questions we get asked about this inverter
What does BST mean?
Boost. A SigenStack BC with the BST suffix can boost the battery voltage up to the inverter's start-up voltage; one without it cannot.
Which one do I need?
If the system has PV, the BST controller is always essential. If it has no PV and fewer than nineteen batteries, BST is still essential. Only a PV-free system with nineteen or more modules can use the plain M2-0.5C.
How much current will it carry?
180 A maximum to and from the inverter, on a 550 to 1,100 V window. Nominal battery charge and discharge is 157 A at 0.5C.
How many do I need?
One per system, on the MAIN base.
Documents, advice and trade pricing
Every datasheet, certificate, installation manual and warranty document we hold for this product is in the Documents tab below. See the rest of our storage range, our hybrid inverters and our batteries, or email sales@clearraysolar.com if you would like us to check a pairing before you order.
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Everything you need in one place.
- Inverters
- Batteries
- Mounting Systems
- Cabling & Accessories
- Protection Devices
Delivery times vary by region:
- UK — 1-2 business days
- Highlands & Islands — 1-2 business days
Returns accepted within 14 days of delivery for unused items in original packaging.
