Ensure the "IN+" and "IN-" terminals are connected correctly to your power source. Reversing polarity will blow the fuse or damage the board.
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).
Save state (remembers if the output was ON or OFF after power loss). bst900w manual
Before powering on, ensure your application stays within these hardware limits: 8V – 60V Input Current: 0A – 15A Output Voltage: 10V – 120V Output Current: 0A – 15A Conversion Efficiency: 85% (typical) Operating Frequency: 150KHz Short Circuit Protection: 15A Fuse 2. Interface Overview
The BST900W features a four-digit LED display and four control buttons: Ensure the "IN+" and "IN-" terminals are connected
Press the SET button again until the "A" indicator lights up. Adjust the maximum output current using the arrows.
This is a Boost converter. The input voltage must be lower than the output voltage. Save state (remembers if the output was ON
Enters setting mode or toggles between Voltage (V), Current (A), and Capacity (Ah). ↑ (Up): Increases the value. ↓ (Down): Decreases the value. OK: Confirms settings or toggles the output ON/OFF. 3. Basic Operation Setting Output Voltage and Current
Ensure your input voltage is at least 2V lower than your target output.