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Editorial Review
Lithium Battery Expansion Board for Cellphone Raspberry Pi 3 Model B Pi 2B B+Feature:Battery capacity: 3800mAH Maximumoutput current: 1.8AOutput voltage: 5.1V ± 0.1VDouble USB outputStandard charging current / voltage: 1.0A/5.0VIt can last about 9 hours if only pi 3.The Lithium battery expansion board can be also used on cellphone.Description:The working PMU (Power Manage Unit)can be only worked for charging mode or step-up mode at the same time.If the USB-A interface without any external load (like Pi), with 5V input voltage of MicroUSB, then the PMU enter charging mode. The PMU will integrate a current-limiting resistor with the external voltage, 5V voltage for Lithium battery, around 4.6V-4.7V voltage for USB-A interface.(The "ON" LED lights )The PMU would enter step-up mode without external 5V voltage. Under this circumstance, turn on the switch, USB-A interface can output maxmum 5V voltage, two USB-A interface can maxmum output 1.8A current. The PMU itself has current-limiting protection. it will be short circuit when over 1.9A current.Note:You can charging this battery even if the switch is turn off.Raspberry Pi main board is not included!!!Package Including1 * V1.0 Lithium Battery Expansion Board

Features
1) Battery capacity: 3800mAH Maximum,output current: 1.8A
2) Output voltage: 5.1V 0.1V,Double USB output
3) Standard charging current / voltage: 1.0A/5.0V
4) It can last about 9 hours if only pi 3.
5) The Lithium battery expansion board can be also used on cellphone.

Specification
Binding : Electronics
Brand : Makerfocus
Color : Board
EAN : 0190033090687
Label : Makerfocus
Manufacturer : Makerfocus
PackageDimensions_Weight : 0.20 pounds
PackageDimensions : L:4.50 X W:3.20 X H:1.20
ProductGroup : PC Accessory
ProductTypeName : NETWORKING_DEVICE
Publisher : Makerfocus
Size : Board
Studio : Makerfocus
Title : Makerfocus Makerfocus Raspberry Pi Expansion Board for Cellphone and Raspberry Pi 3 Model B and Pi 2B B+