Desulfating with Harbor Freight charger

MEXICOWANDERER from an older thread wrote:
OK I'll pray I that I'll end up making this more confusing.

The charger has an "automatic" charging selection. It works on all but the 50 amp BOOST setting that obviously has to bypass a 25 amp circuit breaker. The boost setting should be used when the car won't start and time is money. For less than a minute anyway.

Secondly, I do not trust the automatic setting, period. With any battery any time, even when constantly monitored. It shuts off far too quickly (around 14 volts give or take a dozen).

To use the charger manually, to defeat the automatic @#$%^&!! setting, slide that switch over to "Start". Honorable Chinese decal maker not bi-lingual enough to understand that the word Start is a misnomer. The setting should say "Manual". For $29.99 you can't have everything.

The 50 amp boost only works on the manual (start) position. I could care less.

This charger just kicks the liverwurst out of an old Schumacher 10 amp, a Craftsman 10 amp, and "no decal" transformer style charger. The Harbor Freight transformer is WAY bigger and heavier. This thing just laughs as it is pumping out 18 amps into a discharged 12-volt battery.

It runs 10 to 20 degrees cooler under prolonged full load than other of my other transformer based chargers.

Some Chinese engineer got carried away when he designed this transformer. It reminds me of the $37.95 5,000 BTU window air conditioners we purchased 11 years ago. Goldstar. One set of 2 has been in operation for 11 years a half year at a time (5.5 years of operation at 100% loaded) and still perform like new.

Someone is going to eventually wise-up in China and figure out they don't need all that transformer. Then the charger will be like the rest of the 10-amp junk on the market. I intend to have a stock of $29.95 chargers by then.

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DESULFATION REGIMEN

Charge battery @ 14.7 volts or thereabouts until amperage decreases to less than 5% of rated amp hour capacity. Terminate charge

Apply CONSTANT CURRENT (as best you can, no less than 4% and no more than 7% of rated amp hours in amperes) Exp. 4-7 amps in a 100 amp hour battery.

Allow the battery to accept that CONSTANT AMPERAGE charge rate until one of four things happen:

1. All the cells revert to original specific gravity density (exp 1.275).

2. Voltage climbs to 16.0 volts (2.67 volts per cell)

3. Electrolyte temperature reaches 50C, 122.0F

4. Any cell boils violently, or emits smoke

Do not exceed the values above. Stop the charge if a value is reached, or of cell electrolyte goes nuts.

WEAR EYE PROTECTION! Hot sulfuric acid splashed in the eyes will cause instant total and permanent blindness!