1. I've had batteries for 10 years before the charge was small enough I started noticing and began replacing them 2. I've had the odd leak from an unused recha

1. I've had batteries for 10 years before the charge was small enough I started noticing and began replacing them 2. I've had the odd leak from an unused rechargeable, but we're talking one out of 16 batteries. I've had more leaks with the unused alkaline batteries in the same long-ignored dish. 3. They last as long as their mAh rating. They're fine.