View the Main Menu
Use the and ▼ buttons to adjust the target voltage level.
Use the button to configure your desired voltage and current values.
Press the SET button until the "V" indicator lights up. Use the ↑ and ↓ buttons to adjust the target voltage.
The LED screen will initialize and display the current default output voltage. The output is by default for safety. Setting the Output Voltage bst900w manual
is a high-performance DC-DC boost converter designed for DIY enthusiasts and engineers who need to step up voltage for heavy-duty projects like solar power arrays, high-capacity battery charging, or CNC equipment
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The BST900W features a four-digit LED display and four control buttons: Use the and ▼ buttons to adjust the target voltage level
The BST900W operates in two primary functional states: viewing mode and setting mode. How to Set Output Voltage and Current Limit
: Once your target voltage and current are configured, long-press the SET button for 10 seconds . Use the arrow keys to select a storage group number (0–9) and tap SET to lock it into memory.
Long-press OK to enter the memory recall menu, select your saved slot, and press OK . 4. Advanced Settings (Special Modes) The BST900W has three hidden functions for automation: 0-n: Automatic output on power-up. 1-n: Cycle display (Voltage, Current, Power, Capacity). Use the ↑ and ↓ buttons to adjust the target voltage
4-digit LED or LCD showing Volts (V), Amps (A), Watts (W), and Capacity (Ah) Cooling: Built-in fan for thermal management 🕹️ Basic Operation Guide Primary Controls SET Button: Toggles between setting voltage and current. Up/Down Arrows: Increases or decreases the selected value. OK Button: Turns the output ON or OFF . Indicators: OUT: Active output. CV: Constant Voltage mode. CC: Constant Current mode (active during current limiting). ⚙️ Advanced Programming Data Storage and Recall The device can store up to 10 groups of settings (0–9).
Before you dive into the settings, ensure you have everything you need. Most BST900W units come with the standard kit:
There are variations in specifications, as different manufacturers and resellers may source units with slightly different components. Always verify the specific details of the unit you have purchased.
To conclude, here is a one-page action plan to get the most from your :
: Illuminates when the module is actively regulating the voltage.
