Hello,
I have an HP Pavilion 15 gaming laptop, and it comes with a 200W power supply. The thing is this one has a data line for the laptop to detect the wattage and also make sure it is a genuine charger. Even a genuine HP charger that can supply lower wattage (I tried 90W and a lower wattage one) won't get accepted.
I tried to use a potentiometer as a divider bridge to send various voltages to this data pin, and it would say charging, but it would throttle (more or less depending on the ID voltage) and also the battery wouldn't really charge, the pourcent stays the same forever.
I already tried to charge the battery without using the motherboard, and it works fine but of course the laptop doesn't detect a charger, so it performs a little bit bad as good gaming performance is only possible when it detects the 200W charger.
I really don't want to break my 200W power supply as they are very expensive and yet it's the only one I can use with this laptop.
I have another HP laptop that uses the same connector and comes with a low wattage power supply (I think it's 40W) but also accepts my 90W and 200W power supplies.
I would ideally want to use an arduino nano or similar to trick the laptop to charge. Having to generate 5V is not an issue at all, I just want to be able to use any 19V power source that has enough current capability so that I can use a 12V lead acid battery to charge it without using my inverter, because going from 12V to 230V and back to 19V is stupid and lossy.
I have an HP Pavilion 15 gaming laptop, and it comes with a 200W power supply. The thing is this one has a data line for the laptop to detect the wattage and also make sure it is a genuine charger. Even a genuine HP charger that can supply lower wattage (I tried 90W and a lower wattage one) won't get accepted.
I tried to use a potentiometer as a divider bridge to send various voltages to this data pin, and it would say charging, but it would throttle (more or less depending on the ID voltage) and also the battery wouldn't really charge, the pourcent stays the same forever.
I already tried to charge the battery without using the motherboard, and it works fine but of course the laptop doesn't detect a charger, so it performs a little bit bad as good gaming performance is only possible when it detects the 200W charger.
I really don't want to break my 200W power supply as they are very expensive and yet it's the only one I can use with this laptop.
I have another HP laptop that uses the same connector and comes with a low wattage power supply (I think it's 40W) but also accepts my 90W and 200W power supplies.
I would ideally want to use an arduino nano or similar to trick the laptop to charge. Having to generate 5V is not an issue at all, I just want to be able to use any 19V power source that has enough current capability so that I can use a 12V lead acid battery to charge it without using my inverter, because going from 12V to 230V and back to 19V is stupid and lossy.