Thank you! That's perfect! All you are really doing is programming
mV/A with a max of 75mV, so that makes sense.

The EVTV diagram says "Isolated 12v to 12v DC-DC Converter". I didn't
see anywhere else that the negative power terminal on the JLD404AH
cannot be tied to the COM terminal. And all my 12V regulated supplies
are common negative. I don't have a separate 12V house battery in the
lawn tractor. Are you using an isolated dc-dc converter in your truck?


On Wed, May 14, 2014 at 9:10 AM, Rick Beebe via EV <[email protected]> wrote:
> I have one in my truck and it works great. It wants a 75mV shunt but I
> have a 50mV/500A. You just lie the meter--I.e. I said it was connected
> to a 75mV/750A shunt.
>
> The manual is available here:
> http://www.lightobject.info/viewtopic.php?f=14&t=1074
>
> Jack Rickard of EVTV has written a plain english one here:
> http://media3.evtv.me/JLD404AH.pdf.
>
> --Rick
>
> On 05/14/2014 06:35 AM, Michael K Johnson via EV wrote:
>> That AH meter at lightobject looks very interesting. It doesn't say
>> what shunt or range of shunts it can use that I can see.
>>
>> I have a buck converter that I can put on my tractor to power the
>> meter, but obviously I'd need to use a shunt to measure current. I
>> have a 50mV/500A shunt installed; do you have docs to check whether it
>> would work?
>>
>> On Wed, May 14, 2014 at 12:21 AM, John Lussmyer via EV
>> <[email protected]> wrote:
>>> I'm going to try one of these:
>>> http://www.lightobject.com/Programmable-Digital-AH-meter-Ideal-for-battery-monitoring-P278.aspx
>>>
>>> I have it on my desk, but haven't hooked it up to anything yet.
>
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