Well Andy makes a point. Heat is what kills you and 2 amps on a couple of hours is 4 amp hours. So what if the circuitry allows the current to double due to the half voltage charging resistance. Ok so it's 8 amp hours, big deal. Obviously the size of the battery matters. For a size 24 or larger I wouldn't give it a second thought.
Lest we remember that a given engine requires so many hp to spin it up. Back in the day, the HP (746 watts....dc volt-amps/HP) was produced by 6 volt batteries using twice the current of today's 12v batteries. So what if the current doubles from the 2A setting on the charger.
I have a couple of size 27 6 volt batteries out back. I'd have to partial charge them before I did the test. I think I still have a 2/10 amp 12v charger on the shelf. Might take that on tomorrow and check the charging current between one and 2 across 12 v.
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Today's Featured Article - A 1937 John Deere Unstuck - by Gary Hickman. Here is my story of how I got the pistons out of a 1937 JD B that the engine had been stuck for about 14 years: About 12 years ago my Dad gave me one of the tractors I ran as I was growing up on our farm in central Nebraska. The engine on this tractor, a 1937 John Deere "B", had been stuck for 2 years before he gave it to me. This last spring (1999) I hauled the tractor to our 2 acre lot in St. Libory Nebraska where it joined my antique machinery collection, at that time a 1929 Caterpillar T
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