ARyee 18V 6.0Ah Lithium-Ion Battery Replacement for Bosch BAT620 BAT609 BAT610 BAT610G BAT612 BAT618 BAT618G BAT619G Cordless Power Tools - Compatible with Drills, Saws, and Other Bosch 18V Devices for Home DIY and Professional Use

I finally got to use this 6.0 Ah battery last weekend on my reciprocating saw. I cut down about 15 small pines trees and I lost only one star on the charge indicator with two stars of power remaining. I had a Bosch 4.0 Ah battery that would not last that long.Not as advertisedORIGINAL REVIEW: 'So these appear to be working as I am working on my deck. However I noticed that something inside rattles around like it is not seated or fit properly. I will update this review down the road and let you know if they are junk or if they were worth it.'UPDATED REVIEW 9/7/22 : This summer I worked on my deck replacing boards. I can confirm that after multiple recharges that these NEW batteries that were ordered to replace the original Bosch batteries that came with my tools in 2017 HOLD LESS OF A CHARGE THAN THE ORIGINALS. Think about that...I used these Bosch tools with the two original batteries since 2017. I built many things in the shop and used them for decking in the summer of 2017 at my father's estate. This year I realized that those charges were not holding like they used to, so I ordered these ARyee replacements. These new batteries die before the original Bosch batteries I was replacing and on multiple tools. It seems that the circular saw destroys their charge in about 3 hours of cutting deck boards; maybe a board every 5-7 minutes. The impact drill is next with it dying in about 4 hours. The regular drill I use for pilot holes dies in about 5 hours.I WOULD NOT PURCHASE THESE AGAIN DESPITE THE CHEAP PRICE. My time waiting for a battery to charge is worth more to me than saving a few bucks. In the long run, saving money on this purchase has cost me money in terms of my time and productivity.I don't have any Bosch cordless tools but I just purchased a refurbished Bosch jobsite radio which I love and these batteries are perfect for it for about a quarter of the price of actual Bosch batteries.Performs just as you would expect for the price. Works just as it should. The battery does not match the drill at all, so it can be easy to mix up with other brands.Have had them for a couple months. They seem to be lasting longer than my standard smaller batteries. Can't beat the price.Son in law used these during a weekend of midget car racing and experienced no problems. An initial charge was all that was needed to get things rolling. Very happy with purchase.I charged them up and they worked fine. But the batters I received were all black and had no battery level indicator. I was going to return them but decided needed new batteries more than I cared about their looks.