BeHappy 2 Pack Tool Battery, 21V Max Lithium Battery, 6Ah Cordless Drill Battery Replacement for 21V Battery Cordless Power Tool

I've washed a car, body, chassis and engine bay with a single charge,

Excellent

EXPENSIVE but working great hope they last!

Neither battery would charge and died immediately. Showed full charge at start of minor use and died. Would not illuminate. Lousy purchase for someone on ssi like me.

I hope this product review clears up confusion to what tools this set of Be Happy batteries will fit. I have several Chinese made tools that can use this style of battery. Please read on, and I feel this post will be helpful. You will have to CAREFULLY study the pictures I posted to see if they will fit your tools or if you have a compatible charger.These batteries charged up well fir me, and ran my Drinkosh leaf blower for example, well. These can charge two ways for me. This battery can charge via a common barrel port in the center between the power shoe contacts. The common 20v barrel chargers will charge these fine. For instance, I charged one with my Modest 6inch chainsaw charger. I also have an MFT leaf blower charger shown that is very similar to a Makita. I posted a Makita compatible battery for reference. I looked, and the MFT convenient charger is not available on Amazon separately. These batteries will NOT charge on a Makita charger though since the Makita charger has a yellow charging contact strip in the way. I will research the feasibility if this can be modified.I checked my tools I have and these Be Happy batteries will NOT work for many traditional brands common in America such as Bosch, Dewalt, Black and Decker, Porter Cable, and others. Many Chinese made power tools come with just one battery and they will advertise them as 20v or 21v. It is nice to have more than one battery. I have not torn a battery apart, but I suspect they all have a common design of using 18650 lithium ion batteries configured in them. There is nothing real special with these batteries; they are pretty generic. What is nice is that this company is the first I have seen selling this style of battery, making it available. For this, I applaud the seller and company. Now if someone would make the easy to use charger that MFT uses, that would be awesome. I hope you found this post helpful.Update:I did some further inquiry into the possibilty of modifying a Makita battery charger by removing the yellow plastic box that is in the way of being able to charge these Be Happy batteries. This cannot be done because the yellow box has sensors to read the battery to tell how much charge is needed, the amount of current charge, and also what voltage style the battery is. So now I use a barrell charger from my other equipment such as my Modest chain saw to charge these batteries up.

I reviewed the original tool and battery set back in early July. Those batteries proved to have about one amp hour of available power. Which is the reasonable expectation of a nominal 2Ah battery, which otherwise have performed as promised. Based on a working voltage range of 21 volts to no less than 16 volts for these new batteries, I have some confidence in saying that 4-amp hours or slightly better is the available power to expect.These batteries arrived with an 18-volt charge and charged up to the promised 21.0 volts. A slow charger to be sure, but it gets there. (Seller is being modest when saying 20v max, which is a common somewhat misleading claim in many cases. At least they are not asking their own charger to top off what might be fully charged batteries, as some of these DeWalt replacement batteries apparently do. Which I'll be reporting as a red flag in the future. I will no longer be topping them off above the stated max voltage.)I have been pleased enough with these medium duty drills to have continued using them where an impact wrench would not be the tool of choice. The one significant limitation was the undersized batteries. If you have this tool line, I recommend getting these batteries.

Just got the two batteries I ordered. One was fine and charged up. The other showed a green light right away like it was already charged. It wasn't and wouldn't charge or work. So one of two ok the other dead.I would like to get the one replaced.

I've had many of these types of batteries and am usually disappointed. These have actually worked very well so far in my leaf blower. The original died shortly after getting it. The 2 are 10x better and have a larger capacity. Definitely happy with this pack. If any issues arise I'll update the posting.