This is a buck converter that reduces DC voltage. If you need a specific output voltage, the input voltage needs to be about 1.5-2 volts higher than the desired output voltage. It has a nice makeshift "body" worth having. It's great because you can limit voltage, current, or both. This has confused people in some of the other reviews but is actually an advantage. If the current limit is too low for your minimum, it won't spend what you need. To use it you need to put a minimum load on it and set the tension as you want. Then load it heavily and adjust the current as you like. You now have a constant voltage but current limited power supply. Warning: The device appears to be designed to power 5V USB at a higher voltage such as 12V. You must set it to 5V before connecting any USB device, or it will destroy your USB device. I had no interest in USB and stuck a glue stick on the USB connector to prevent someone from plugging in such a USB device if it was the wrong voltage.
Jack Pad Adapter Anodized Black Replacement For B-M-W 135 335 535 E82 E88 E46 E90 E91 E92 E93 E38 E39 E60 E61 E63 E64 E65 E66 E70 E71 E89 X5 X6 X3 1M M3 M5 M6 F01 F02 F30 F10(1 Pcs)
21 Review
MUSTART Level 2 EV Charger With WiFi, 16/25/32 Amp Smart Electric Vehicle ETL Certified Indoor/Outdoor NEMA 6-50P 25Ft Cable
30 Review
Jack Pad Adapter Anodized Black Replacement For B-MW 135 335 535 E82 E88 E46 E90 E91 E92 E93 E38 E39 E60 E61 E63 E64 E65 E66 E70 E71 E89 X5 X6 X3 1M M3 M5 M6 F01 F02 F30 F10,Mini (3 Pcs)
24 Review
OEMTOOLS 24397 2.5 Gallon Manual Fluid Extractor Pump For Oil And Transmissions, With Oversized Handle For Easier Use And Extraction
23 Review
Reversible Mi 16-in-1 Ratchet Screwdriver
21 Review
Xiaomi Mijia Ratchet Screwdriver 16 in 1 Screwdriver with Interchangeable Bits, 10 pcs, Black
22 Review
Bit and socket set Stels Tool set, 1/2", 1/4", CrV, plastic case 94 pcs, Stels, 94 pcs, black
46 Review
Xiaomi Mi x Mijia Wiha Precision Screwdriver Set (DZN4000CN), 25 pcs
34 Review