Battery Info

airbiscuit · Dec 25, 2024

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.

Fallon · Dec 25, 2024

EddieWalker said:
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.

Popgadget · Dec 25, 2024

After watching the project farm video on jumpers, I got this one-

Amazon.com

Haven’t found anything it wouldn’t start.

airbiscuit · Dec 25, 2024

You can't go wrong with Project Farm!

Popgadget · Dec 25, 2024

airbiscuit said:
You can't go wrong with Project Farm!

Agreed. Better than Consumer Reports……

LittleBill21 · Dec 25, 2024

you don't jump with 50 amps, 50 amps is a charge, you need 20 minutes or so to give the battery some times to charge, depending on the size.

just buy a jump pack. so much more convenient.

something like this.

https://www.amazon.com/NOCO-GB40-Ul...56d0e36d47207&language=en_US&ref_=as_li_ss_tl

airbiscuit · Dec 25, 2024

That one is low capacity. Buy one with 4,000 or 5,000 amps

LittleBill21 · Dec 25, 2024

airbiscuit said:
That one is low capacity. Buy one with 4,000 or 5,000 amps

LOL, This one big enough for you?

https://www.amazon.com/NOCO-GB250-U...1fb7fe418bdba&language=en_US&ref_=as_li_ss_tl

Too many Kubotas · Dec 25, 2024

Fallon said:
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.