featureTriangular designThere are 2 small sucking cups on the back, sucking slightly on each smooth surfaceSupport the exchange of 18650 li batteries. Easy to use and safeIt can also be used as a charger for the 18650 batteryPlug -in, the power output connected to the USB, insert the data cable to obtain a portable device for chargingSpecificationSize: about 10 cm x 3.5 cm x 3.5 cm (L X W X H)Unit type: 1 x 18650 batteryCapacity: 2800mAh (maximum)Entrance: DC 5V / 1A (maximum)Exit: DC 5V / 1A (maximum)Color: red, whiteThe package includes:1 X DIY power bank box (excluding battery, USB cable)

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