Hi
Your batteries have *charger disease* it has absolutely nothing at all to do with the batteries or your actions. It is entirely caused by your infected charger. This little known fact of life is only known to the few.
Since you didn't know about this disease, the problem with your batteries is now *not your fault*. Doesn't that feel much better? You can now pass this knowledge on to others so they will know it's *not their fault*.
This disease can be fixed by discarding your infected batteries and using the BOB CHARGER. It uses a secret set of charge algorithms to prevent *charger disease*. It is a 397 stage charger. It has been *proven* by the Charger Disease Institute to cure the problem. Testing at the institute has demonstrated a 9,000% typical increase in battery capacity. The institute's methods are of course kept secret to prevent the spread of *charger disease* ....
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Batteries die, they always have died. People look for a magic cure. "Blame the charger" has been an advertising ploy for at least 80 years. It works to some degree because defective batteries occur randomly. It fails when people's actions actually cause the failure and they continue to repeat those actions. People rarely admit what happened in that case. Battery charging is actually pretty simple stuff. Damaging a lead acid battery by running it flat is relatively easy. Like dropping a glass on concrete, it will not later repair it's self. It may not be destroyed by the event, but the "cracks" are there ....
Bob