I sell stuff on ebay occasionally and I use a 9V battery for my digital scale for shipping prices. About 2 months ago I bought a Dollar General 9V Heavy Duty Battery. These batteries are not heavy duty. I know it was cheap but I can not remember exactly how much it costed. I used my scale about 7-10 times in the last two months. I went to weigh something this morning and the battery was dead. Wow that was fast. So I went to take the battery out and replace it with a Duracell battery my husband had bought. There was something wet on the underside of the Dollar General battery. I went to smell it and it smelled like weak battery acid. I checked the expiration date on the battery and it was 06/10. I immediately threw the battery away, wiped off the leakage inside my battery part on my scale, and washed my hands. I am not sure but the last time I checked batteries were not supposed to leak. Isn't this dangerous?! I may have just bought a defective battery. I have used many DG AA batteries for my wii remote and they have worked just fine. Although even the DG AA batteries do not have a long use life. I like Dollar General but I think I will pass on their batteries from now on.