MEXICOWANDERER wrote:
๐ Ninerbikes my crack about chickens was meant to finish conveying my feelings on this thread about PWM chargers (i.e. smart chargers) and pulse charge de-sulfation.
They don't work. Take T-105's with cell readings of say 1.250, 1.260, 1.235, 1.270, 1.255. 1.230 after thoroughly charging them. Connect a whizz-bang super-smart solid state charger and grab a calendar.
There has been enough written in this forum about the inexpensive Harbor Freight manual 10-amp charger that I hoped you had read about it. I assumed you had.
Go to a gigantic battery battery manufacturing plant. One that has a hundred thousand dollar line charger. What kind of charger is it? It is a series charger designed to run constant amperage through the batteries. If there is a problem in the greening stage of manufacturing, it is resolved (hopefully) by a constant current charge.
Is there a completely manual or adjustable PWM charger? I don't think so. The public has been brainwashed to the point where they won't buy a charger unless it sports some miracle type Ponce de Leon cycle that suposedly would jump start Frankenstein.
This all is no reflection on you. My sarcasm is directed solely at companies that spend eight dollars on a plastic case and two bucks on what's inside then claim it'll do "anything".
Mex, a bit about my backround. I was a lowly grunt in the late 1970's working at Sears Roebuck and company in the Tire Buster and later the battery and electrical department in the Los Angeles area. I tested a lot of batteries, starters, alternators, generators, etc. I gave the thumbs up or thumbs down to a lot of Sears DieHard batteries. I did a lot of load tests for 10 seconds at 500 amps plus and expected the batteries voltage to stay above 9.6 Volts. 10.0 was marginal. I put a ton of customers batteries on a huge rack with a trickle charger that took a couple of days to fully recharge a depleted group 27. A DieHard 4301 was our all time best selling battery. This was a part time job while going to school at a University, it paid a lot better than minimum wage at the time, and I got good raises regularly while there.
I don't know the volts or the amps the trickle charger provided. We were not given access to that info. I looked for 13.7 to 14.4 Volts after a motor started being provided to the battery via an alternator and voltage regulator, depending on the charge state of the battery and what the alternator/regulator could provide.
I am in here to learn. If I repeat an often asked question, forgive me. I don't do much shopping at Harbor Freight, I've no idea what that latest charger does to give 11 amps at what ever finished voltage. that's what works for 225 amp 6v batteries. Is that a different set of amps for a 150 Ah T1275, about 2/3's of 11 amps, due to a T6 being 225 amp hours? I don't know, but is 7 amps better for the T1275? Therefore, I ask... tons of variables from capacities of batteries. All of which effect charge rates, optimal amps to provide and optimal voltage. I worked a ton every day with a Frias No 1. I treated the glass and rubber on them like gold, never broke one, unlike a lot of the other employee guys in the battery shop. That instrument was like gold.
