TOMO A2 Power Bank 2 * 26650 Lithium Battery LCD Display Screen Micro USB Input Dual Output DIY Smart Portable Battery Box for Mobile Phone

Features:
2-in-1, 2 * 26650 Battery Charger + Smart Power Bank.
Each slot with independent charging circuit.
Fast and high-performance chip, provide 6 kinds of protection.
LCD Display Screen is convenient to read the remaining capacity.
Multiple uses, power bank/charger/storage box.
5V/2A, 5V/1A, dual output USB, two devices get charged simultaneously.
When charging the device, it displays output voltage and output current; when charging the batteries, it displays input charging status.
When input and output at the same time, it will automatically charge the device first, then charge the battery.