Comments: SparkFun 5V/1A LiPo Charger/Booster Hookup Guide
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What's the distance of the mounting holes? 26.5mm?
26.67mm (1.05") center to center.
If I want to connect it to a RedBoard or BlackBoard, do I connect (-) to a GND pin and (+) to the 5V pin (to bypass the Arduino power regulator)? If so, will I have any power on the 3V pin?
What about a Teensy LC? Connect (+) to the 5V pin and (-) to a GND pin, or (+) to VUSB and (-) to GND, below the USB connector?
Is it possible to charge the battery when the switch is ON ? or is tit mandatory to put the switch in OFF position to charge it ?
Can we use the booster alone without a battery?
I tried doing that, though it shows 5V when output is disconnected, it is not able to turn on an Arduino Uno.
Also can we use this board with Li-Ion batteries ?
i am looking to do similar to gumbergules to combine 2 boards in series to get 10v output. Is it possible to arrange the chargers in series with a single 10v power supply? also if i have 2000mAh bateries is there a setting to get 2000mAh or a similar product that will do it.
Is there a way to charge the series multiple charger/booster configuration without disconnecting them? I assume the grounds aren't isolated on the board so you'd have to either provide 10V split between the two USB ports or charge from two isolated 5V outputs, right?
Two isolated 5V USB chargers is the way to go. Ours are all isolated, and I haven't come across one yet that isn't. At least here in the US. Note, USB chargers with two USB ports are probably not individually isolated so use two separate supplies.