With two boys we go through Alot of 9 volt batteries for remote control cars. They normally don't last long. I got this Energizer rechargable 9 volt battery and it's perfect it lasts awhile and then instead of having to buy a new one I pop it in my charger and the next day they are back racing cars. This is definitely a money saver!

These batteries were charging all night.. I use them all day. they only last 2 hours and I have to change them.

This battery can be used in many things. But i found that using it in the fire alarm is the best. It keeps charge a long time. Then you can recharge it and use it again. They can be recharged hundreds of times. You can use them anywhere that uses the 9v battery.

I received this rechargeable 9v to review, it is always nice to have a 9v because you never know when you are going to need it. I like the fact that it is rechargeable so that I can get more than one use out of it.

I put this Energizer 9V in a karaoke microphone for my kiddos. They left the microphone on overnight and play with it literally all day long, and it's still going strong! I prefer rechargable batteries because there is less trash in the world and it saves you money for sure. I am always pleased with Energizer batteries.

Batteries are all around us and part of our everyday lives. Whether it’s the remote for the tv or even smoke detectors. I absolutely love having the recharable batteries because not only does it cut down on waste and help the environment, but we’re saving money by simply recharging and reusing instead of spending countless amounts on new batteries. And with a name like Energizer it really does keep going and going.

It does it's job as it should, and looks like a normal one. It is pretty convenient in the sense of durability since it is rechargeable, and I used it for an rc drone for a few days before it started to weaken, so I put it to charge and it's back to normal.

I haven't had any issues with the battery it holds a long lasting battery life and charging it brings it back full speed. my alarms usually die out quick but this is holding its ground! I'd continue to use this rechargeable battery as long as allowed!

This is a pretty standard 9V battery. I'm installed it in one of the toys my kids use frequently. At some point I will recharge it - don't expect anything out of the ordinary. Happy with Energizer, it's lasting quite a bit on the very first charge.

These are a great way to save money on having to buy new batteries all the time. We are using this for our smoke alarm. It lasts a very long time once charged and it will be nice to charge and reuse so we always have them working. It is easy to charge and we are looking forward to getting more.