I bought 4 510 mega batteries about 4-5 months ago and 2 of them have completely died. It seems like the other two are getting weaker as well. The small batteries are still going strong but I will say my husband and I have used these much less.
For those of you that use these batteries, how many months do you usually get out of them?
For those of you that use these batteries, how many months do you usually get out of them?