Hi Andy. The E310 external power connector is capable of handling 5-15 VDC @ max current of 3.5 A. So if you use an external battery pack with the correct mating connector instead of the wall wart, it should work without modification, although it is not an officially supported configuration. You should consult the schematic at http://files.ettus.com/schematics/e310/e310.pdf to ensure that the pinout is correct.
-Robin On Tue, Aug 21, 2018 at 10:56 AM, andy klein via USRP-users < [email protected]> wrote: > Hi folks, > > I wondered if someone can clear up some questions I have about running > the E310 on battery power. I'm aware that I can purchase an E312, but > I'd like to use my existing E310's if possible. > > ** BACKGROUND ** > > I'm aware that there's a "newer" (circa 2015, so 3 years old now) > firmware available for the E310 that apparently enables support for > powering the device with a 3.7V battery. However, installing the > firmware requires opening the device, connecting a JTAG programmer to > the ISP header, and folks in this thread here have reported trouble > finding a compatible connector -- > http://lists.ettus.com/pipermail/usrp-users_lists. > ettus.com/2015-October/016085.html > If I can avoid opening the device, hacking a connector on there, etc, > I'd like to. > > Meanwhile, some users in these forums report success by just > connecting a 7.2V battery to the device with no mention of a firmware > upgrade, such as this thread -- > http://lists.ettus.com/pipermail/usrp-users_lists. > ettus.com/2017-May/024803.html > Yet, Neel at Ettus claims that the E310 (presumably running the > original firmware) needs an external DC power supply, in this thread > here -- > http://lists.ettus.com/pipermail/usrp-users_lists. > ettus.com/2015-May/014048.html > > ** QUESTIONS ** > > 1. Does one really need to upgrade the E310 firmware to be able to > power the E310 with a battery? Or is this only necessary if one seeks > to use a 3.7V battery? > > 2. Can one just connect a (for example) 7.2V battery to the device > without bothering with the firmware upgrade? Maybe with a voltage > regulator if necessary and a plug that's compatible with the E310 > power jack on the end (such as the KLDX-PA-0202-A-LT that is suggested > in yet another thread on these forums). > > Thanks. > Andy > > -- > https://aspect.engd.wwu.edu > > _______________________________________________ > USRP-users mailing list > [email protected] > http://lists.ettus.com/mailman/listinfo/usrp-users_lists.ettus.com >
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