From some weeks ago I have been wanting to buy a battery charger, because I don't want to buy any more alkaline bateries. From some weeks ago I have been wanting to buy a battery charger, because I don't want to buy any more alkaline bateries.

This morning, I spent more time than I would have liked, watching comparatives ofvideos comparing the products. This morning, I spent more time than I would have liked watching videos comparing the products.

At the end, I bought up one that I think it has all I need. At the end, I bought one that I think it has all I need.

OR: "I ended up buying"

I would buy some rechargeables batteries too, Bbut I saw the price was more expensive today thatn last weeks, so I will buy them in another momenttime. I would buy some rechargeables batteries too, but I saw the price was more expensive today than last week, so I will buy them another time.