Instruction: Output yes if the supporting document can answer the given question. Otherwise, output no.

Input:
Question: Is it 3/8 or 1/2
Document: I have a B&D lawn trimmer and lawn blower. Since I only had 2 batteries, and it took 8 hours to charge each one, it took 2 days to finish my yard. They didn't sell the quick charger with the lawn trimmer or sell it as a standalone item so I bought the drill to get the quick charger (20-30 minutes to full charge). I use the drill infrequently but now I have 3 identical batteries that each can charge in 30 minutes.
A 5 for the charger and a 1 for the drill because I haven't used it yet (average =3).
Awesome pair yard untouched for a year then I purchased these and when to town on it. Weed 4 foot tall. You need the fast charge to keep up. Fast charger with 3/8 drill.
This is the package with the fast 35-minute charging station and I think it's worth the extra $20 or so because since it charges so fast, you probably shouldn't have to worry about having 1-2 spare battery packs (which is expensive in itself) since it can charge so fast. From my initial use, it does charge as-advertised.
Don't leave them on the charger forever - when they are finished charging, remove them. It wont hurt them very much, but you'll get more years out of them if you don't.2. Don't leave them fully charged or fully depleted for too long. The batteries don't like it.3.
Suspense and applause - as the announcer  opens the envelope- clapping, everyone is in tuxedos and had their teeth whitened and they smile giant smiles:  The victim, just finished using a speed bit to drill some 1/2 holes through a Formica work surface, with  particle board underlayment and plywood and so far- GOOD. marvelous .
I had an old (now tired) Dewalt prior to this and it didn't do this.The battery:  I found I was able to kill the battery from full charge in under a half hour - maybe even less than 15 minutes - even though the product was being used for the very first time. I was drilling 5/8" holes through ceiling joists. I doubt I drilled more than 2 dozen holes.
I recently used it for planting small trees with a 2.75&#34; garden auger. Whoa! Having a battery operated drill makes digging holes in my rocky 3 acres a snap. Really beats getting down on your hands and knees with a trowel and getting sore wrists and elbows from repetitive banging into hardpan. Drilling several side by side holes loosen the soil to the ultimate hole size you need-- you just remove the dirt and plant.
This is my third B & D 20v lithium-ion drill, and I have found that they are good for drilling wood and up to 1/4&#34; mild steel. Also, the drill has great torque.
My air-blower is the biggest energy hog, consuming a charge in just 7-8 minutes (but you'd be surprised how much you can get done in that amount of time) Solution? - have additional batteries at hand. Swap & continue.My personal take: Don't buy extra batteries - buy extra tools that come with an identical battery.
Answer: no