Battery Info

   / Battery Info #171  
I have two jump starters like this in our cars. At first I was skeptical, but they outperform my older, more expensive more bulky, and less powerful jump starter. It starts my vehicles and tractor just fine.

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   / Battery Info #172  
On the battery charger. How many amps is ideal for jump starting a dead battery? The link I just posted to on Amazon is rated for 200 amps. There are others on Amazon rated for 250. Is more better?
50-75 amps is good to charge a dead battery. That will get a low battery to starting in 5-20 minutes. 200 amps is usually towards heavy equipment or starting the vehicle off the charger without waiting for the battery to charge.

My 5/10/30/75 amp charger has been fine for me for a decade or so. I just picked up a 200 amp charge as I needed on that did 6v as well. Only does 20 amps on 6v though. Got the old-school dumb one with the mechanical timer so I could abuse it as a general 6 or 12v power supply for testing gear without smart electronic objecting.
 
   / Battery Info #174  
You can't go wrong with Project Farm!
 
   / Battery Info #177  
That one is low capacity. Buy one with 4,000 or 5,000 amps
 
   / Battery Info #179  
50-75 amps is good to charge a dead battery.
And here I've been told that to resurrect a battery it should be charged at a low amperage (about 1-2 A) for a day or two before stepping up to 10 A or so.

Of course, I suppose it depends on if the goal is to save the battery or start the vehicle.
 

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