Pure sine wave inverter for Macbook 13" 2019 vs modified sine wave?

[pjny]

Hi,

I am looking at Bestek inverters and one is modified sine wave and the other is Pure Sine wave. Will this make a difference charging from my car battery. I use regular 200w inverter now in the car and I am not sure if it is the reason I have to reset PRAM/SMC after using it in car as the laptop seems to "slow" down.

Modified sine wave converter $29.99

BESTEK 300W Power Inverter DC 12V to 110V AC Car Inverter with 4.2A Dual USB Car Adapter

BESTEK 300W Power Inverter DC 12V to 110V AC Car Inverter

www.amazon.com

Pure sine wave $48

BESTEK 300Watt Pure Sine Wave Power Inverter Car Adapter DC 12V to AC 110V with 4.2A Dual Smart USB Ports

BESTEK 300Watt Pure Sine Wave Power Inverter Car Adapter DC 12V to AC 110V with 4.2A Dual Smart USB Ports

www.amazon.com

Does pure vs modified make a difference if charging via apple AC adapter?

Thanks

 

[velocityg4]

Always use pure sinewave. Modified sine wave has the potential of damaging electronics. Although the risk may be low. $20 extra is a small price to pay to protect your equipment.