Review on High-Capacity Lithium-Ion Replacement Battery With LED Indicator For DEWALT DCB200 DCB204 DCD/DCF/DCG Series Tools - Compatible With Waitley Upgraded DCB206 20V MAX 6.0Ah by Phillip Brown

I've had 3 of these batteries in rotation for over a year now, and I will say they do work well. As many folks have said they are probably closer to the power/longevity of a 4ah dewalt. Although the 6ah have plenty of power, they overheat relatively easily, and I find myself swapping them more frequently than a larger dewalt battery. But as far as power and reliability go they work fine. The part I'm pretty disappointed in is the quality of the shell on 2 of the 3 batteries, the plastic has cracked, allowing the housing to just crack open during use. Whether this is due to heat or whatever, I can say its not due to physical abuse, as I'm not overly hard on tools. but when it does happen the battery will stop working. I'll press it back together, put it on the charger for a few minutes and it will work again after. I'm not sure if I would be eligible for a replacement due to that, but I may try to contact them, as it seems they have battery life left.