All battery powered tools require replacement at least every few years due to planned obsolescence by manufacturers limiting the availability of compatible replacement batteries for their previous models. Since this is true even for the 'top-line' brands, it's pretty pointless to overspend on it since the batteries will die long before the tools wear out. Do find (as in this case) that it's generally cheaper to buy 2 of the latest cordless tool kits than to buy one kit and order a separate extra battery (to use one battery and charge once on long projects). ). It also makes up for a potentially less durable component since you have an extra tool and charger in the fenders. (The second 20V battery for this Wesco screwdriver costs almost $10 more than tool + battery + charger.) Of course, buying too cheap can have disadvantages, but not in this case: this is the most compact, lightest and most powerful drills ever. one driver out of dozens I've had and the battery life has been great so far. I'm hoping to find another model that's half as good when these bats come out. Overall a lot. High-priced tool makers have overturned the old maxim "you get what you pay for" by playing into battery affordability. Don't encourage them.