Battery life?
how do I charge a 9 volt battery without having to charge it
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In order to renew 9 volt battery, you will have to charge it.
Say the magic words I am an idiot 10000 times that should do it.
How is it gonna work without charging it????? Stop and think about this more a minute.
Or just go to your local dollar store. Dirt cheap.
https://www.instructables.com/topics/How-to-charge-a-rechargeable-9v-battery/