"I have heard analogies that compare using batteries in a home power setup to having a bank account."
I think you got it a bit off with the health of the banker??
It would seem to me the similarity is you never get back out what you put in. A banker work hard?? That makes me laugh
And if a sickly banker dies it might be sad, but there is no loss to the account, another banker just takes his place. The Money bank works just as well with one less banker (sometimes better), a battery bank does not work as well with one less battery though.
You loose power charging the battery, storing the energy, taking it back out latter with batteries.
You loose money putting it into a checking acount, storing the money and taking it back out latter with checks.
Batteries have losses of power due to nature. Banking accounts have losses due to greed of banks and excessive monthly service fees
Unless you have a free personal checking account, then you have losses paying for checks as needed.
Either way, battery or money banks, you never get back out what you put in.
Similar with savings, you may think your getting more back in interest than you put into the account, but to do that you have to put it in and let it sit unused. If you have the money to spare like that, then other investments are far better for a greater return, so you still have losses due to ineffiecincy. You have both money AND time involved and are getting a lesser return at the bank than you could got other wise.
Similar to trying to use weak batteries. You put in a greater amount of time and power, but get less returned, but that is still less than put into them, no gains, so not exactly the same.
But anyway I am still laughing at the part about a Banker working hard
Thank you for cheering up my otherwise dreary morning which has got the day started off bad already here.
Oh, and no offense meant if you happen to be a banker yourself.