The OPINION part
seems like some of it is FM, fricking magic.
basically no one has made a bad battery act like NEW
alegedly 1/2 the ones out there are BS
and dont even have electronics that would DO anything
Sometimes if you FOLLOW the manuel of a placebo it works (huh?)
take a sugar pill with 2 glasses of water, you will fell better.
but dont follow the manuel and just take the pill, and you wont.
take a sugar pill with a good attitude, and you will have a better attitude
if your happy and think your well adjusted , then your healthier (less stress and all)
Charging overcharging a battery de-sulphates (at least some)
keeping a battery wet and recharged helps it
if a placebo has you tending and maintaining, then it works :-)
cleaning the stuff that discharges it
hygrometer checking it, lets you know more
replacing the batteries out of discust, makes them work great
adding a placebo to a new battery will make it last for Years :-)
Sulfating isnt the ONLY problem with older batteries
especially ones with little lead.
there is shorting, and general falling apart
Some Psudo Facts
pulse charging, makes metal electrolyte batteries last longer
pulse charging can improve a bad battery , till its totally dead
Because batteries are like HUGE arse capacitors for low frequency stuff
it is unlikely that a high frequency pulse is any more effective
than normal pulse charging.
SO
i kinda liked most the circuit HERE that somone posted for pulse charging
with hard hitting caps, and am presentally testing it, with good results
(ok so its MY placebo :-)