mk3:quick_start_guide []

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===== GRNbms MK3 Quick Start Guide =====

==== 1. Power Supply ====

The GRNbms MK3 supports both **High Voltage (HV)** and **Low Voltage (LV)** operation.
=== ➤ Low Voltage Mode (12 V System) ===

{{:mk3:screenshot_2025-04-07_163618.png?nolink&162x162}}

  * Connect 12 V to the **"Jump Start"**  connector
  * This powers the BMS directly for low-voltage applications or setup/configuration

''👉 Details about relay and output wiring can be found [[:mk3:lvrelays|here]]''

=== ➤ High Voltage Mode ===

''{{:mk3:screenshot_2025-04-07_163636.png?nolink&460x130}}''
  * For high-voltage setups, connect the BMS using the dedicated **HV connectors**

**HV POS Connector:**

  * ''B+''  → Connect directly to **Battery Positive**
  * ''O+''  → Output (post-relay) – //not required for power supply//
**HV NEG Connector:**

  * ''B-''  → Connect directly to **Battery Negative**
  * ''O-''  → Output (post-relay) – //not required for power supply//
''✅ To power the BMS: **only B+ and B- are needed**''

''⚠️ **Valid voltage range:**  150 V – 1200 V DC Operating the BMS outside this range may cause malfunction or damage.''

Additionally, for safety and EMI compliance:

  * Connect the **battery chassis**  to the ''E''  pin on the **CHASSIS**  connector
  * Use a **dual connection**  if possible for redundancy

''👉 Details about relay and output wiring can be found [[:mk3:hvrelaywirring|here]]''

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==== 2. Network Connection ====

An internet connection is required for the **initial setup** and activation of your BMS.

''📝 **Note:** A [[https://grnbms.de|GRNbms.de]] account is required to complete the setup.\\
You can create one during the initial configuration or in advance here.''

=== ➤ Ethernet Connection (recommended) ===

  * Connect the BMS (ETHERNET 1 Connector) to your local network using a **standard RJ45 Ethernet cable**
  * The BMS will automatically obtain an IP address via **DHCP**  (from your router)

=== ➤ WLAN (optional) ===

If no Ethernet is available, the BMS can create a **WiFi access point**:

  * Plug in a **compatible USB WiFi stick****before power-on**
  * ''✅ Must be a supported chip – see [[:mk3:compatible_wifi_sticks_list|compatible WiFi sticks list]]''
The BMS will create a hotspot:

  * **SSID: **''GRNbms_MK3_AP''
  * **Password: **''0123456789''
  * **IP Address: **''192.168.4.1''
Connect to the hotspot and open ''[[http://192.168.4.1|http://192.168.4.1]]''to start setup.

=== ➤ Accessing the BMS ===

Once connected, try opening one of the following in your browser:

  * ''[[http://grnbmsmk3/|http://grnbmsmk3/]]''
  * ''[[http://grnbmsmk3.local/|http://grnbmsmk3.local/]]''
''💡 These names work only if your router supports mDNS or local hostname resolution.''

=== ➤ Can’t find your BMS? ===

No problem – just visit ''[[https://grnbms.de|GRNbms.de]]'' \\ There you can see all BMS devices in your local network.

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==== 3. Initial Setup Wizard ====

When you access the BMS interface for the first time, a guided setup will begin automatically.

=== ➤ Step 1: Network Connection ===

If no internet connection is available, the BMS will first ask you to connect it to the internet (via Ethernet or WLAN).

=== ➤ Step 2: Login ===

Once online, you will be prompted to log in with your [[https://grnbms.de|GRNbms.de]] account.

''🧑‍💼 The first user to log in will automatically become the **owner**  of this BMS system.''

=== ➤ Step 3: Software Update ===

If a firmware update is available, the BMS will guide you through the update process before proceeding.

=== ➤ Final: Dashboard ===

After completing all steps, you will be redirected to the **main overview page**, where you can continue configuration.

''🔐 To make further changes, you need to **log in again**  via the login button in the top right corner of the web interface.''