Power Bank for a 2015 MacBook Air (MJVM2LL/A)

I have a old 2015 Macbook Air (MJVM2LL/A). I rarely use it without having access to a wall socket for the power adapter (60W with "T"-style connector. "Flip-plug" AC connector)

I have occasionally run out of battery when I couldn't charge it. Not a big deal at those times (lucky).

I have power banks for my phone and tablet, but none of them work to charge this laptop. I did buy an T-style adapter connector for the usb c output of those banks but I guess they don't put out enough wattage to do anything. At least the little charging icon doesn't indicate the power bank is charging it and the level never changes.

Anyone know if a power bank that would work with this laptop.

Posted on Jun 22, 2022 2:17 PM

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y_p_w

Level 6

17,762 points

Posted on Jun 22, 2022 8:27 PM

tibbi wrote:

Any idea if it's possible someone makes a power bank that the ac adapter can plug into?

There was one once upon a time - that provided 100V AC and plugged right into the "duckhead" connector on Apple modular power adapters. It was basically a battery with inverter, and had a setup where the modular AC connector went on the other end to plug into AC power to charge the battery. It was really strange looking and was discontinued at least a decade ago.

However, I looked it up and there are power banks that provide AC power. I guess they would be like a self contained battery/inverter combo. It's not going to be terribly efficient though with all the losses in converting AC to DC to charge it, then back to AC to power your adapter and charge/power your Mac. But some are pretty big. Here are a few:

https://www.ravpower.com/products/rp-pb054-pd-20000mah-80w-ac-portable-charger

https://www.amazon.com/Portable-Universal-31200mAh-External-Notebook/dp/B07S4DJTZG/

The main issue I see with these is that they charge through USB-micro-B or possibly USB-C, although I don't know what rate they charge at. If USB-C input works, then they could possibly be reasonably fast if they have it rigged to accept higher voltages with a high-output USB-C power source.

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Power Bank for a 2015 MacBook Air (MJVM2LL/A)

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