With all due respect Jimmy..... If you have any evidence what-so-ever of a HF charger damaging anything, please let me know, I want to know. If they are defective/dangerous, I would like to know. But for the decade I have been using them, no on has.
For the record, I have been using these cheapies for over 10y and the only problem I had was one died. I have 5 running right now. Haven't replaced a battery since I started using them. If someone wants to pay more, that is fine with me, I never criticized anyone for that.
This is the battery in my tractor, you have all seen this:
