Yea, i do think it will help, primarily with battery charging.
Right now, in order to protect the battery, the phone will request 9v, then step it down as the battery charges, and send a reduced voltage to the battery, so over time the battery might see 9v… 8.95vm 8.9v, 8.85v…
This allows the step down to happen at the charger, instead of in the phone, increasing efficiency, and reducing heat in the phone.