Thanks. I went for something with 2.4A at two ports since its handy when traveling. Ordered a Spigen for now.
https://www.amazon.com/gp/product/B01CRBK7S4/ref=ox_sc_act_title_1?ie=UTF8&psc=1&smid=A2SFKRF5TPZMT5
Having had the 2.4A charger and the iPhone 7 Plus for over a week I decided to do a quick and dirty charge test using just the percentage battery life as an indicator (No fancy power draw recordings).
I had the battery at 10% and then plugged it in and took readings at 15, 30, 45, 60 and 90 minutes and recorded the time it took to reach 100%.
15 minutes - 28% ( 1.2% per minute for the first 15 minutes)
30 minutes - 45% ( 1.1% per minute from 15-30 minute interval)
45 minutes - 60% ( 1% per minute from minute 30 - 45)
60 minutes - 74% ( 0.9% per minute from minute 45 through 60)
90 minutes - 92% ( 0.6% per minute from 60 through 90 minutes)
100% - 129 minutes ( 0.2% per minute from 90 minutes through full charge)
Assuming that it would have taken 9 minutes (conservative) to go from 0-10% a full charge would have most likely taken 138 minutes.
My Nexus 6P would get me a full charge using the stock charger (3A) in about 90-95 minutes (
0-100%) so around 50% faster. But the flip side was that I would need to charge the device much more frequently compared to the 7 plus. I would have preffered fast/rapid charging on the 7 plus but getting 50% charge in 45 minutes sounds very good given my daily use. At home, I put the phone on a dock at night but loved fast charging on the Nexus 6p when I was traveling for work or vacation. The 2.4A charger would get me fairly decent performance on the go and I have a 2.4A car charger as well.
Will repeat with the stock charger and post results here as well.