The battery may not be the issue here. Obviously, the battery is the first thing to replace but because you can no longer get it to boot once the battery has discharged completely leads me to believe the issue may be with the charge circuit itself. You could confirm this by partially charging the battery manually with a DCPS. Be very careful when doing this if you have never done it before. You cannot leave the charge unattended as overcharging can destroy the battery and cause a fire. Dave Jones (EEVBlog) has some videos on how to do this properly.
So if the battery is not the issue, then it may be the charge port or the charge subsystem on the logic board. The next logical step would be to replace the charge port. This requires micro-soldering.
Hello fellow Montrealer!
The battery may not be the issue here. Obviously, the battery is the first thing to replace but because you can no longer get it to boot once the battery has discharged completely leads me to believe the issue may be with the charge circuit itself. You could confirm this by partially charging the battery manually with a DCPS. Be very careful when doing this if you have never done it before. You cannot leave the charge unattended as overcharging can destroy the battery and cause a fire. Dave Jones (EEVBlog) has some videos on how to do this properly.
So if the battery is not the issue, then it may be the charge port or the charge subsystem on the logic board. The next logical step would be to replace the charge port. This requires micro-soldering.