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Review on Topbatt 2Packs 18V 3.0Ah NI-MH Replacement Battery For Dewalt Cordless Tools DC9096 DE9039 DE9095 DE9096 DE9098 DW9095 DW9096 DW9098 DE9503 by Reed Nuttbrock

Revainrating 2 out of 5

Bad clips? Failure mode identified.

Batteries stuck in drill? >> READ THIS REVIEWSo I received two all gray batteries and have had the same problem many others are are having. After inserting the battery, I couldn't get it back out of my drill! I had to use a flathead screwdriver to get it back out. So, being the engineer I am.time to take them apart! Lets get to it:1) Overall, pretty impressed by the clone, albeit, I have not studied plastic injection molding. While many of the intricate details were cloned, there were some important ones that were not (more on that below). The extremities of the mold were not completely filled with material as it commonly seen on cheaper parts, leaving voids of material. They were very minor in this case. I saw evidence of intentional radius-ing around the screw bosses on the dewalt units that I did not see on these, etc.2) The plastic itself appeared to be of similar quality, stiffness, hardness, etc. Hopefully they do not prove themselves to be more brittle. Although, two of the internal screw bosses had broken on my original dewalt batteries, so an improvement would be nice, however, I doubt it.There are two main issues with the clips. These clips work by using a piece of bent metal that acts like a spring. These need to be properly placed and secured for the battery clips to work correctly. This is where these units fail.3a) On the inside of the top battery cover, there is a tab that secures the metal spring, and keeps it from sliding up. I can't tell if its poor mold tooling, or if it was not injected completely, but the tab on the dewalt unit is ever so slightly longer, probably .040 - .060" (See photo). This means that the metal spring can slide up behind the plastic clip. When this happens, the metal spring comes between the clip and the top cover, and prevents the clip from being completely depressed. This is what prevents you from removing the battery.3b) As mentioned above, there is a second part to this. The metal spring, while very close to the dewalt unit, is also a little shorter in a key area. (See photo). This reduction in length also allows the metal spring to slide up behind the clip, resulting in the same problem.Resolution Options:1) Return the batteries (the obvious option).I chose not to because I needed batteries and didn't feel like spending more money on batteries or a new tool set.2) Take apart your old dewalt batteries and simply do a case-swap. Two reasons I chose not to do this: My cases were pretty beat up, and as mentioned earlier, two of the screw bosses were broken off of my dewalt cases. The material of the new cases seemed to be of decent quality, despite the horrible gray color.3) Since the dewalt battery cover had the extended plastic tab, and it fit perfectly on these batteries, I chose to use that along with the bottom cover and batteries that came with these units. I tried using the springs from my old dewalt units (to resolve the other half of the problem), but they just felt loose and didn't seem to work as well in these cases. Changing just the top cover seems to have done the trick.Although no longer black and yellow, I think I can live with a sold-working battery that is now gray and yellow for the price I paid. Now here's to hoping they hold up!UPDATE 8/20/2018:Despite now physically fitting into the drill, these things just don't hold much of a charge. For doing some drilling/screwing here an there they work ok, but try to use them for a demanding project and they will quickly let you down. These are now at the state that my dewalt brand batteries were at after 7+ years of use.and they are about 1 year old!

Pros
  • The battery can be charged quickly and efficiently
Cons
  • Troublesome to use