FYI - These suck, it's just a bunch of 2100mAh rechargeable batteries in series or parallel or however they need to be to get 9.6 volts. I have a few new in packaging that I would guess are 2-3 years old. I bought them at a close out sale for a local store. I ended up with 3 Wally World batteries that I use instead. This thing is rather difficult to get situated since it is round and much bigger than a hockey puck. The cable also isn't a standard Adaptatip end either, one prong is larger than the other to dummy-proof it so you don't accidently feed your DVD player the wrong polarity.