Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Great product, short life

I bought these for my Canon digital camera (A710-IS) and was immediately disappointed to find out they did not support both 110V and 240V input voltage. To counter this, I immediately bought some Sony batteries with the same specs that did have a 110-240V charger. I used these 2 sets of batteries through many trips.After 2 years, the Energizer batteries simply stopped working. They would hold a charge for maybe a few days then be dead, even with no use. The Sony batteries are still lasting for hundreds of photographs with each charge.I would not recommend these batteries simply because you'll need new ones within 2 years. Buy some Sony ones instead.