Thanks guys- never thought of this, I have a similar unit in my boat already. I typically use it just for monitoring amp output and volts. I have two throttles on my boat, a spring loaded Curtis-PB6 which I use for docking/ maneuvering and a 5k knob style pot that I switch over for cruise control, set the pot for desired amps/speed off of the gauge. I'm not sure if it will accurately pick up a small 1 amp load as it is rated for up to 400 amps. Anyone share what they used for a test load- a resister or a bulb? I assuming around 1 amp (12 watts) will be closest to measuring true a/h readings. Given that these lithiums only charge to 12.6 volts means my cut-off voltage will likely be closer to the stated BMS cut-off, somewhere between 9-10 volts or when the voltage starts sharply falling off?
On Wed, Mar 13, 2019 at 3:23 PM John Lussmyer via EV <ev@lists.evdl.org> wrote: > On Wed Mar 13 11:06:36 PDT 2019 ev@lists.evdl.org said: > >Yep Totally agree. I use several of these to monitor voltages and > >currents in my DIY EV. Nice thing about them is that they work both ways > >and will take into account regen and charging as well as discharge. I > >found them to be as accurate as shunt based meters at a similar price > >range BTW. > > I use this one: > > https://www.amazon.com/Programmable-Digital-meter-battery-monitoring/dp/B0043BDFYA/ref=sr_1_1 > > has 2 relay outputs, counts AH in both directions, uses a shunt for > currents over 5A. > I've found it to be pretty accurate. > > > -- > > Try my Sensible Email package! > https://sourceforge.net/projects/sensibleemail/ > _______________________________________________ > UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub > http://lists.evdl.org/listinfo.cgi/ev-evdl.org > Please discuss EV drag racing at NEDRA ( > http://groups.yahoo.com/group/NEDRA) > > -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20190313/3f48978c/attachment.html> _______________________________________________ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub http://lists.evdl.org/listinfo.cgi/ev-evdl.org Please discuss EV drag racing at NEDRA (http://groups.yahoo.com/group/NEDRA)
