Chosen Solution
Is it possible to boot an A1534 Macbook Air 2015 on DC Power? Battery label has: Rechargeable Li-ion Battery 7.56V = 41.41Whr 5474mAh The battery is dead flat and wont charge. Original USB-C charger is a little dented. The macbook was working fine before the battery ran out. What is the Battery VCC so I can try and boot it on a DC power supply? Otherwise is it possible to directly charge the battery with my lab power supply?
Was able to measure the charge rate of a working model. 8.5 Volts @ 30 Watts. Don’t play with batteries unless you are a trained professional
Its not that simple ;-{ Lithium Ion batteries can’t support a flat charge, you risk damaging the battery and your device. Its best to just replace your charger if its damaged. Apple now allows other USB-C chargers to charge their systems but you still need to be careful! Make sure it’s an approved charger and offers enough wattage for your system. USB-C opens up some new options for people! For years we needed an Apple charger as there just wasn’t any other way (the knockoff chargers people have tried ended up damaging their systems!) Apple now allows other USB-C methods to charge their systems but you still need to be careful! Here’s a good write up on backup batteries High-Capacity USB-C Battery Pack Comparison and Review These will charge your system via a DC connection. If that’s the direction you want to go with.
