At some small company I designed the nicad battery chargers in the Boeing 767 and years later the 777.

I have friends who designed Lead Acid battery chargers.

They are disgusted with me for letting the batteries in my truck and my car go dead during Covid 19.

I paid for 2 new batteries and a battery charger.

I learned my lesson and now my batteries are ready for the next pandemic.

There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. -Ernest Hemingway
The man who makes no mistakes does not usually make anything.-- Edward John Phelps