slow.
Inside is a 2200mAh lithium ion battery, a charging circuit (you charge it via the USB cable
attached), and a boost converters that provides 5VDC up to 1 Amp via a USB A port. The 1 Amp
output is key for when you want to power the Pi, wifi adapters, maybe even small displays.
The charging circuit will draw 500mA from a 5V supply (plug a microUSB connector into the
pack and then to a computer or wall adapter). You can charge and power something at the
same time but there's ~80% efficiency loss on both ends so if you charge it at 1A and draw 1A at
the same time, the battery pack will eventually go empty. However, if you're powering something
thats 500mA or less, you can keep it topped up no problem. Also, when you start and stop
charging the pack, it will flicker the output, this can cause a 'power sensitive' device like the Pi or
an iPhone to reset on the power supply. If using it with a low current load, say under 100mA, the
pack may 'fall asleep' - you can use this circuit to keep the pack awake
Comes with the battery pack and a micro-B cable that you can use for charging the pack or
powering a device with a micro B port.
TECHNICAL DETAILS
LEARN
Dimensions: 25mm x 91mm x 25mm / 1" x 3.6" x 1"
Micro-B Cable: 500mm
Weight: 73g
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