ekrub

My wife has a 2020 RDX and I tried finding an inverter to power/charge my MacBook pro. The power outlet says "12V 180W MAX" on it and I know the MacBook Pro requires 140W, so I got a 150W inverter, thinking that should work. But, when the inverter is plugged in, the TrueTouch pad stops responding and, eventually, the charging starts working only intermittently. If my phone is connected, CarPlay gets intermittently disconnected. All signs that the inverter is asking more than the car can provide. Looking more closely, the inverter says it's 16A and I believe the RDX power outlet might only support 15A. I've tried smaller (e.g., 100W) inverters and they either don't charge the laptop or cycle between charging & not charging. I've read that pure sine wave inverters (vs modified sine wave) are better for the MacBook Pro.

I rarely need to charge while in the car, but it's nice to have a workable solution in those rare cases when I could use it.

Has anyone found an inverter that works in a 3G RDX to charge a MacBook Pro?

thoiboi

Use a less powerful charger (like a 100W one). It wont charge the MBP when it’s completely dead but it should be enough to fill it up slowly while working.

ekrub

Do you have a suggestion of a specific model that would work with a 2021+ MacBook Pro? I've tried a couple lower power inverters (100W and 65W) and they work for a few seconds and then stop working (sometimes switching on & off intermittently before giving up). While the lower power inverters aren't expensive, I'm hesitant to buy a 4th one hoping it might work.

John from PA

Not an inverter but what about this…USB charger

thoiboi

https://www.anker.com/products/a2343...42691851911318


this

dcb007

If you use a DC USB c charger with a high wattage 100 w or more you should get a more efficient transform of power and as a previous poster stated at 100W it will still charge but not as fast as the 140W will do. My guess is the system you used DC-AC was creating interference spikes or waves that were traveling back down the supply line and interfering. Alternatively Electromagnetic waves - you could test the later by plugging in the read socket and seeing if it lessons the impact on other devices.

When selecting your USB device make sure to look at wattage on the primary outlet some are listed as 120W but they push 40W to each of the 3 outlets on the device that wont work for your application.

Happy charging

Cheers