[.:4:.]

Well, for diy, use the ozito warrenty. My brother inlaw does that all the time for diy. If its not an 8 hour thrash, they hold up. The warrenty does replacements. Battery equipment, well lithium atleast, you need to store the batteries not dead, otherwise after time they go bad.
I bought my brother an ozito drill and impact driver kit. Whilst im from a trade background and have to top end makita gear, the ozitos do pretty well for 8x less of the price. My brothers diy isnt like working on a construction site. Its belt in a screw here, drill a hole there, so its perfect for that. Just keep the receipt and warrenty card. They do honour it if something craps out.