I've just bought an Acer laptop, and the salesmen are eager to sell some insurance, that will replace my battery, if (or when?) it stops working.
Should I take the offer (about 250$), or is it better taking the risk?
Will my battery last longer if I remove it from my computer, when I use the adapter?
What are the other terms and conditions. You can get batteries for way less than that, so if thats the main selling point, I wouldn't bother.
it also covers damages like spilling liquids in the computer, and if you drop the computer and it's damaged.
You really need to consider if it's worth it to you. How much did the laptop cost you? If the battery goes it will probably cost $150 to replace it. It would be useful if you dropped it alright, but if the laptop only cost you $500 then you might want to consider the relative cost.