I bought the charger with two batteries. I tried to use them on my Canon EOS 620, A2e and Elan IIe. I noticed on the first day that once I used the internal flash, the battery would die immediately. At the beginning, the rechargeable battery can turn on my A2e. However it got discharged after few days even without any camera usage. After charging the battery three or four times, it won't work at all on my A2e right after it is fully charged.