Was buying el cheapo batteries for my DeWalt tools and was tired of burning them up. So far so good on these batteries, better bang for your buck at this price than the knockoffsI bought these batteries with the fast charger for my husband who uses a grinder to work with wood, mostly making walking sticks. It helps him get the rough stuff off fast, saving him time. I read in the reviews/question thing that someone said the batteries lasted 30-40 minutes with a grinder working hard. The batteries only last 15 minutes each with my husband working the wood hard. So either I misunderstood that person, or he was putting the time together with two of these batteries. In any case, for the price I'm not thrilled. My husband, on the other hand, is excited because the batteries he had previously only lasted a few minutes each.I bought these batteries under the buy new option, but they came with in a clear bag with a piece of paper saying ‘thanks to you these items have a second chance’. I would assume these are refurbished not new.Batteries aren’t something you want making multiple shipping/return trips, it makes you curious why the previous owner returned them and now if they are defective in anyway I will automatically assume it was because they weren’t brand new.Expensive, but they're exactly what they say they are. I use these just about every day.I recently purchased a dewalt cordless leaf blower, and because of all the trees in our backyard, i use it twice a day in summer to keep our back patio clean. Having the larger battery really helps heaps in blowing leaves. Batteries tend to drop in power somewhat when they are close to out, so having a 6ah instead of 4ah makes a difference to how long i can use it AND how powerful the leaf blower is for that time. Great purchase, wish i bought these ages ago.It been difficult finding a good tool store on Amazon- really difficult. The batteries were packaged well and is exactly what was purchased.great valueThese are the 1st 20v 6 AH batteries I’ve bought. Normally I buy the 5 AH, but these were a better deal at the time. They are significantly bigger and heavier than the 5AH. This isn’t a complaint. Just be aware what to expect. They have worked great so far. No complaints about the performance.La durée de charge ne m'impressione pas tant... je ne vois pas de d'avantage par rapport à la 5 Amp compte tenu du poids beaucoup plus lourdWe. had issues with one of the batteries and reached out to the seller and they called right away and were helpful with trying to right the situation. Highly recommend.The jigsaw and circular saw did not last very long with the standard 3A batteries, but with these 6A batteries I now have enough power to get the job done.Great batteries if you need the runtime. Slightly bigger than the 5 amp HR batteries.Haven`t used it very much but seems to have a great battery life.