Anker PowerCore 5000, Ultra-Compact 5000mAh External Battery Electronics We thought this could really

We thought this could really make for a great breakout

we made the interface pins all 5V compliant with level shifters so you can use the chip at 3V or 5V power/logic

4 or later

For software that can take advantage of multiple-core processors

but you can cut the default trace and add a solder jumper if you need to switch to 3

Anker PowerCore 5000, Ultra-Compact 5000mAh External Battery Electronics We thought this could reallyHigh Capacity: Contains 5000 mAh of power. Enough to provide two charges to an iPhone 6s or at least one to a Galaxy S7. Ultra Compact: Remarkably small, tubular design slides easily next to your phone in any pocket or bag. Just 10cm tall and 3cm wide. High Speed Charging: Equipped with exclusive PowerIQ technology, it provides the fastest possible charge to any phone or tablet (up to 2A). Does not support Qualcomm Quick Charge.