On Thu, Jul 13, 2017 at 1:35 PM, Robert Nelson <[email protected]>
wrote:

> On Thu, Jul 13, 2017 at 3:26 PM, Sri Ram <[email protected]> wrote:
> >
> > Hi,
> >
> > Is 3S battery compatible with Beaglebone blue?
>
> no, 2s only..
>
> https://github.com/beagleboard/beaglebone-blue/wiki/Accessories#Batteries
>
> Regards,
>

So here's the problem.
https://github.com/beagleboard/beaglebone-blue/blob/master/docs/BeagleBone_Blue_ShortSpec.pdf

*Page 3 states:*

> e. Power management:
> i. TPS65217C PMIC is used along with a separate LDO to provide power to the
> system (Integrated in the OSD3358)
> ii. 2 cell (2S) LiPo battery charger (powered by 9 – 18VDC DC Jack)
>

The problem is this. I think I understand  what the documentation is trying
to say, but this can be misleading. The voltage should be left out of the
battery "section" and perhaps mention that the system must be powered by
the DC jack. Because 2s batteries are 7.4v nominal, and fully charged 2s
batteries are 8.4v

You see what I'm getting at ? When you include the DC jack voltage into the
battery spec section, you're confusing the issue, and almost making the
documentation contradictory. e.g. it almost makes it seem like a 3s, or
maybe even a 4s pack would work.

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