I have two identical laptops and one of them is broken. I expect it has something to do with the charging circuit. The laptop works fine when it is provided with a full battery. But it doesn't receive power from the adapter.
I've opened the laptop and did some basic measurements with my multi-meter to check if it's not the charging port which is broken.
An motherboard replacement would cost about € 350 which is quite a lot for a 3 year old laptop.
Question:
- Would it be possible to buy an external charging circuit and connect it to the battery directly?
- Could I maybe cut out the battery entirely and provide power to the laptop where the battery normally does this? I'm not sure if this is possible, I expect the laptop to do all kinds of checks to for instance display the current capacity of the battery to the user.
- Is there still hope for this laptop or should I just buy a new motherboard or entire new laptop ?
The laptop requires an 19V, 4.74A, 90W input. The battery is an Li-ion battery pack which requires an input of 11.1V and has a capacity of 4400 mAh.