Yes, this is a known failure mode that has been identified and warned of in the past. A fully charged LiPo battery is about 12.6V and in conjunction with a sudden current spike resulting from connecting the tablet can cause the 5V regulator to fail. There is an upcoming hardware revision that fixes this issue. In the meantime the only way to guarantee this doesn't happen is to not exceed 10V on the input or use Android devices that have been tested to having sufficiently small inrush current.
On Tue, May 19, 2015 at 12:21 AM, 'M. A.' via ioio-users < [email protected]> wrote: > Hi Ytai, > > The cable I am using is a 15 cm OTG-Micro-USB-Cable, please have a look on > the attached photo. > For the power source, at the beginning I was using a LiPo bettary, with > the following characteristics: > > - Nom. Voltage: 7.4 V > - charging current: max. 8 A > - discharging current: max. 160 A > - capacity: 4000 mA > > Till here everything was working normally, then I switched to another LiPo > battery with the following characteristics: > > - 3 cell > - 11.1 V > - 2200 mA > > And that was when the problem started. It worth mentioning that this is > not the first time to use the second battery, I used it many times before > and everything was fine, but this is the first time for me to use it while > the trim-pot is all the way clockwise. > > Many thanks > > -- > You received this message because you are subscribed to the Google Groups > "ioio-users" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > To post to this group, send email to [email protected]. > Visit this group at http://groups.google.com/group/ioio-users. > For more options, visit https://groups.google.com/d/optout. > -- You received this message because you are subscribed to the Google Groups "ioio-users" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at http://groups.google.com/group/ioio-users. For more options, visit https://groups.google.com/d/optout.
