Tbh I went through a whole phase of testing different bricks to find the best value for my setup. I learned pretty quickly that the "advertised" capacity is usually way higher than what you actually get to use because of voltage conversion loss—basically you lose like 30% of the energy just moving it from the bank to the phone. I eventually settled on a unit that had 20W Power Delivery because anything slower was just frustrating, but I made sure not to pay the "premium brand tax" for stuff I didn't need. Ngl, checking the specs for 9V/2.22A output was the sweet spot for my iPhone 13. Honestly, just digging into the technical data sheets saved me like $20 compared to the mainstream options. TL;DR: Look for 20W PD specs and factor in roughly 30% capacity loss to make sure you actually get those 2 full charges on a budget.

ngl i had the same exact struggle with my iphone 13 last year. i was so torn between the convenience of magsafe and just getting something that actually lasts... i eventually went the cost-conscious route because i couldnt justify spending double for slower charging. i ended up super satisfied with the Anker 313 Power Bank 10000mAh because it hits that sweet spot of price and capacity. the reason i went wired is basically physics... magsafe loses so much energy to heat that a 5k bank barely gets you to 80% charge. with a wired 10k unit you get way more actual juice for way less money. its worked well for me on long flights and i have no complaints about the extra cable since it tucks into my pocket easily. anyway just sharing because i was obsessing over the same thing for weeks... definitely think about the efficiency loss before you pull the trigger on something fancy.

Anker MagGo Power Bank:

Helpful thread 👍