From the main idle screen, press and hold the button for 3 seconds. The screen will display the last loaded memory slot prefix. Use ▲ or ▼ to locate your desired slot.
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Complete BST900W DC-DC Boost Converter Manual & Operating Guide
Use the or [-] buttons to pick your target storage slot. 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
The input power source is dropping voltage under load, triggering an undervoltage state.
: Connect your load or battery pack to the OUT+ and OUT- terminals. From the main idle screen, press and hold
Look for a sticker or engraved QR code on the back or bottom. Many modern BST units include a direct link to the latest manual version. Use your phone’s camera to scan it.
This section covers the core programming functionalities.
The display turns on, but the output voltage matches the input voltage exactly. If the website search fails, email or call support
: The module uses a physical 20A fuse for short-circuit safety. If a short circuit occurs, this fuse will pop and must be physically replaced (non-self-recovery).
Long-press OK for 10 seconds to enter the menu, then select AUTO-OFF .
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Check with a multimeter that your power source provides at least 8V DC at the terminal blocks, and double-check that IN+ and IN- are wired correctly. The module shuts down or resets under heavy loads
Press the OK button to activate the output. Ensure your target voltage is configured higher than the supply voltage. The module shuts down unexpectedly under load.