Keep accessory power on indefinitely w push button start?

[gmc tony b]

On 4/2/2021 at 11:27 AM, Bluefella said:

I don’t leave a fob in the vehicle. Expect the batteries to run dead flat over night. Even with NOCO battery “maintainers” they let the batteries drop below 12.3 volts. Over time batteries will need replacing prematurely. 
Im still looking for a suitable maintainer in excess of 10 amps. Any advice welcome 

I’m very interested in this topic. Please keep me updated. Thanks 

[Theynine]

Would be nice if there was a computer flash, or some gizmo,  that could disable the timeout.  The diagnostic mode keeps the dash lights on, ruining it for my purposes ' THE DRIVE IN MOVIE'.  And even the diagnostic mode times out within the hour.   Let me choose whether to drain my battery or not.

[Shoey5566]

I know this is an old thread, but has anyone every used the Schumacher DSR117?  I called Schumacher electric for a recommendation to maintain my 2022 Silverado Trail Boss in extended accessory mode.  She told me the DSR117 is what dealerships use for vehicles that are sitting in their showroom with accessory functionality.   I was looking at more beefier charger/maintainers, but if this works I will get it.