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 Terry Myers

This battery fit OK, and charged OK on the OEM equipment. IN USE, it lacked stamina. Running the tool at full power the battery would shut down after 2-3 minutes from a cold start, fully charged. The first time it shut down, I checked had had 90% charge remaining. The tool will restart immediately, but power supplied by the battery did not last one minute, AND with each subsequent restart the "ON" time got shorter. Apparently there is a circuit that senses power drain, heat, or something that shuts off the battery. I tried two of these and the results were the same. Bought the OEM battery, and it runs full tilt until all power is consumed. GOOD value for intermittent use, but avoid for heavy usage.