ITEM NAME:1Pc DC-DC boost converter step up module 0.9V-5V to 5V 500mA for arduino MP3 JR 1Pc DC-DC boost converter step up module 0.9V-5V to 5V 500mA for arduino MP3 etc Description : 1. input any DC voltage of 1V~5V, output 5V DC voltage is stable, the input to the output current of 500~600MA with two AA batteries, a single AA battery power supply output current 200ma about for mobile phones camera, single-chip, digital products supply. 2. high conversion efficiency, up to 96% 3. ultra-small size, installed in a variety of small equipment 4. with working lights Parameters: 1.Input voltage: 1V~5V 2.Output voltage: 5V 3.Output Current: 500mA 4.PCB size: 17.55mm*25.22mm*5.85 mm 5.En bloc Size: 17.55*32.53*8.3mm Scope of use: 1.DIY Mobile Power Supply: When you travel or travel, you always feel that your mobile phone, MP3, MP4, PDA, PSP is not enough power, and you have extra batteries, you can consider a mobile power supply DIY; as long as you choose this module plus your [lithium or 2-3 nickel-hydrogen] can output 5V voltage for your mobile phone, MP3, MP4, PDA, PSP charging, very simple oh. 2. Voltage adjustment: If you need different voltage power supply in product design and 5V power supply for equipment, then choosing our module will be your best choice. 3. Voltage stabilized power supply: When your power supply is very unstable, high and low, but when your equipment needs 5V power supply, then choose our module will be your best choice. Packaging includes: 1Pc.Output Current: 500mA.