Windows 10: laptop battery vs charger

I was working on my laptop and it just shut down (no power). How do I tell if it's the battery or the charger?

:)

 

Battery Charger for a Dell Laptop

At the shop we work at, costumer's sometimes actually forget the charger for us to work on there laptop, so we use this mega 15-20v changing laptop charger with 15+ adapters on a strip for all kinds of laptops. Its shifty but it chargers laptops and keeps them running pretty well.

Id get the exact charger though so you don't end up breaking your laptop battery over time.

 

Battery Charger for a Dell Laptop

My friend just gave me a Dell Inspiron 600M Laptop which did work last time he used it, but that was a couple years ago. He no longer has the battery charger for it and I know I can easily buy another one for it. I have two questions: Could there be any long-term effects to the battery for not being charged for over a year or 2? ....and (this is a long shot) would the battery charger from my old Gateway Laptop work on this Dell 600M?

 

Battery Charger for a Dell Laptop

If the battery is totally dead, it might be damaged.

It is unlikely that the gateway charger will work with the dell.