Check the listing for details. LTC1871 Boost Module 3.5-35V 100W With Dual Display Voltmeter. Condition: New. Listed at 13.99 USD. 1 X LTC1871 Boost Module. Input Current: 9A (maximum) Output Current: 6A (maximum), Output power: 100W (maximum). The digital tube close operation: long press button 4s until the digital tube display the contents of the LED is lit, the display section has been closed.