Hi folks. I recently purchased a used MacBook Air 2012 11" with a blown-up battery. With the battery removed, the unit looks to be in good shape, passes pre-boot diagnostics, and I've successfully installed MacOS. I am having a few issues with it that I'm hoping can be fixed. I first noticed that the unit will boot as soon as the power adapter is plugged in. There is no battery in the unit, but the charger stays solid orange. I have tried 2 oem chargers with the same result. I'm wondering if there is a fault somewhere causing the power to come on without hitting the power button and perhaps causing the unit to think a battery is installed. Possibly related to this is the unit's extremely slow performance. I noticed in recovery mode that the mouse lags, everything takes a while to load. In MacOS, the computer is so slow its unusable. I suspected a bad 64GB SSD, and purchased a 128GB unit. No change. If its a memory or CPU issue, diagnostics doesn't show it. Any ideas on the issue or a possible fix?