Oumefar 5V 2A USB Mobile Power Bank Module Portable Back Up Power Supply Stable Battery Charger Board DIY for Electrical Devices

【Normal Operations】: Users can press and hold the button after standby, and the LED digital display shows the battery, so users can clearly and directly see the working status of this mobile power bank module 【Working Principle】: This 5V 2A USB power bank board module is a portable backup power supply with an input matching 5.0V adapter to the internal battery, so you can trust and use it with confidence 【Extensive Protections】: Our high reliability back up power supply has extensive protections, which includes over-charge protection, over-discharge and short circuit protection, so it can efficiently protect itself 【Mini Size】: Our portable back up power supply owns small body and stable performance, and this stable battery charger board is an ideal choice for you, which is also a good charging board for DIY 【Specifications】: Condition: Brand New Model: H961-U Weight: Approx. 15g / 0.5oz