system demo without running the engine?

[PaperChaser]

He had 2 12" subs and an unknown amp or power output. It's wasn't just the tv's. My guess is that my t1500 probably does draw more power still. All good though.

[Bump4life]

you solar panel charger probably doesnt even put out more than a few amps of current. at a minimum IMO, you want a 7.5 amp smart charger. if you are going to be depleting your batteris with car off you want a very good charger. ctek or xs power both make great chargers. if you are going to be fully draining them id recommend the xs power intelli charger which can output up to 25 A or the ctek 25000. both are great chargers and will replenish severly depleted bats as well as desulphate the plates. A solar charger isnt going to be enough.

also 1 extra battery only? what size battery is it? you come in here asking for advice then you think some suction cup solar panel is going to be enough to charge your batts? and 1 extra batt will hold you over for 45 minutes? I can tell you if you are really jamming youll need more than 1 extra batt for the t1500.

a good enough solar panel to charge batteries well will run you a few hundred to 1000 dollars from what ive seen on the net.

[MrSkippyJ]

and you will have to spend lots of time charging with the charger. Avoid letting your alt(s) do the recharging for you.