using a MBP charger on my MBA?

[0920872]

I wasn't referring specifically to an MBA. I was referring to why I always buy bigger chargers.

But...
If the MBA is using 15 watts on a 30 watt charger it leaves only 15 for charging.

If you have a 65 watt charger you will get it charged faster while working.

This is the way every other MacBook I have had has worked.

Maybe "forever" was hyperbole, but I feel that 5+ hours to charge while I am working (which is typical even when I plug in at say 55-65%) is pretty damn slow. Fortunately the MBA battery life is pretty good and I don't need 100% charge very often.

My point though is that Apple is super stingy with the chargers they ship with ALL of their devices, and have been for at least a decade. They ship chargers that will barely keep up with the maximum power draw of the device. So if you are using and charging at the same time it sucks. This is the case with everything they make.

I'm not trying to "scare people". The stock charger will work of course. I'm merely stating my experience.

If you plan to buy a second charger, it is worth spending like $10 more and get a larger one which will give you better charge times when you're using the thing.
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Yup. And you don't even need to be fully depleted to see that sort of charge time if you're actually using the thing to do more than basic web stuff.

This exactly has been my experience. My solution is to have a higher rated charger at my work desk with my external display and use the MBA charger on the couch.

 

[throAU]

If it went to 'Service Battery' when you used a higher rated charger, it was coincidental. All MB chargers of a given generation / type are the same voltage / polarity; all that differs is the maximum wattage the charger can supply, and this wattage is requested by the device not the charger. Your MB will not have requested a wattage that could damage its battery.

yup

also especially with the USB-C macs - if you plug them into a monitor or dock then guess what? Those supply up to 100 watts over USB-c to charge any laptop connected to them.

I.e. they are rated at much higher than the standard Apple charger

if your Mac went to “service battery” it wasn’t due to using a larger charger - assuming it wasn’t some knock off ebay item that was actually dangerous.

It was a coincidence

 

[0920872]

Yesterday my battery died on my, and I couldn't turn my MBA back on even after 10min on the charger. Do I have a faulty charger?! It turned on instantaneously on the aftermarket...