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[Pemalite]

Conina said:

Hi, I was surpised to see the PC handhelds with an untethered TDP of 25 Watts (~30 Watts for the whole device) going different routes to get the needed power.

• the ROG Ally has a higher voltage but lower current (30 Watts / 15.48 volts would need a current of 1.94 Amps)
• the Legion Go has a lower voltage but higher current (30 Watts / 7.76 volts would need a current of 3.86 Amps)
• the MSI Claw has a medium voltage and medium current (30 Watts / 11.61 volts would need a current of 2.58 Amps)

Are there advantages or disadvantages to the different solutions (for a mobile device) or doesn't it matter, if the needed/delivered power is the same?

I know I am a couple of days late...

Higher voltages allows for less energy losses during transmission... However stepping down those voltages loses energy.

Higher amperage and lower voltages tends to require more stepping up to meet the voltages required for certain parts of a device, which introduces losses.

So it really depends on what components they are running as to what is the best fit.

Then you have the charging side of the equation which heavily influences on how parallel/serial the battery cells are laid out.