adafruit_support wrote:What is your input voltage when the data line voltage drops?
Do you mean directly from the battery?
Also, I put 68k resistors in R1 and R3 to keep the D+ and D- lines well above 2v.
adafruit_support wrote:Looks like your input voltage from the battery is holding up pretty well. The data line voltage (which should be a fixed fraction of the output voltage) sags about 10% which should mean that your output voltage is sagging too - probably to about 4.5v?Also, I put 68k resistors in R1 and R3 to keep the D+ and D- lines well above 2v.
You don't want it to be too much above 2v, because at some point the higher voltage will signal the device to start charging at a 1A rate as described here: http://www.ladyada.net/make/mintyboost/icharge.html The MintyBoost won't be able to keep up with that demand.
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