Solar 12V 24V 30 Amp Battery Controller

No. If you have a solar cell, maybe.

How much power is going I to the controller total?

More.details.

You're the boss. You don't need permission here.

I concur. You may proceed with blessing, just don't blame us when laptop goes @##$@##fffffffffffthhhhhzzzzzzzzzzthfffffthh!

First of all, what is "THIS"?

The 12 volt 1 amp charger won't add anything because the operating voltage is higher than the 12v output of the charger. Therefore nothing added to the circuit, since the charger output depends upon comparing the voltage coming out of it to the voltage of the device or other power sources. A 12 volt car charger will stop charging when the battery voltage gets to around 14.4v to 15.0 volts. The 24 v/30 amp unit can power it if a suitable voltage drop is provided. If a resistor is put in series in the supply line it will work but is wasteful since the dropping wattage of the resistor is wasted as heat from the resistor. 24v - 19v = 5 volts, 3.5 amp current; P=I*E, power wasted = 5 volts * 3.5 amps = 17.5 watts = 59.71 btu/hr.

Another more efficient and probably smaller physical size unit to use would be a switching "Buck" convertor. These are small size circuits/devices that take a higher source voltage and reduce it to a lower voltage output. These circuits can be devised to utilized and change higher voltages and high amperage to lower voltages. There efficiencies can be as high as 90% to 95%. This would take the 24 volts and reduce it to 19 volts at 3.5 amps. Overall result is you have converted 24 volts dc to 19 volts dc with minimal losses. Some units are adjustable so you can fine tune the output voltage to what you want.

Good Luck, Old Salt

I came across this post and thought of adding my view.

You want to run the lap top and do not charge it up - means when the lap top is connected to 12V 1 amp supply it shall work.

Regarding voltage of your source: A thumb rule is to use any accumulator up to 80% of its no load voltage. That means with initial voltage of 19V, you may be able to use built in battery of Lap top up to approx. 16V the lowest - hence 12V supply seams out of question.

regarding current capacity of your source: 3.5A is the charging rate of charger of the lap top. I do not have concrete information about Li Ion batteries, but going by general experience, a lap top is charged in 3 to 4 hours, and full charge lasts up to 3 to 4 hours. Hence required discharge rate of Li ion batteries of lap top, that is same as continuous current required for lap top to function, should be approximately 3 A (assuming approx. 85% efficiency of charging of batteries). Therefore when you connect your lap top to 1 A source - the screen of lap top may not be bright enough to see any thing.

End result could be when using lap top on 12 V 1A source - could result in frequent interruption of supply to processor and hard disc may crash - hence do not take any chance -

Purpose of arriving at conclusion with so much of explanation is that who so ever read this post may be in a position to decide on capacity of power supply for any application.