Ihave had several sizes in cell and mah of zippies ther are good for what they are cheap batteries out of say 35 ish batteries I have only had 1 DOA. I may be a bit luckier than others have seen others get 2 or 3 DOA's in an order. The problem with this question is it turns into an arguement over people who have very polarized views kind of like which radio is better or which airplane is better. It comes down to a lot of personal preference.