That would add up if the ram didn’t work in either slot, but the fact that it always works in the left slot and never in the right slot makes me suspicious that something got fried somehow.

I’ve used Spiceworks self-hosted back in the day. Not sure how good it still is.

Why not a Bluetooth mouse?

So… mAh is a bit of a useless number. Watt hours is a multiplication of amps and volts. If a product tells you the amp hours, that’s only one half of the equation.

If you can find the voltage on your battery, you can use the following format to get a rough estimate of charges.

mAh÷1000×volts/55wh.