Portable Jump Starter Advice

I bought this last month.
Cost and quality is a bit more but you get what you pay for.
Less than the cost of a service truck jump start.

 

Ditto above.

Best jump box I have seen so far.

We have 3 and they are used daily. So far almost a year with no issues.

 

I have one similar to that. Works like a charm.

 

how long to charge one up and how long does it last sitting waiting to be used?

 

I bought a Stanley Fatmax 1200 last year at Sam's Club. Only plugged it in the wall one time since then. It's still fully charged.

 

Charges quickly. Less than a half hour w wall charger. May take longer with a DC or USB charge.
Need to charge every 6 months to maintain warranty.
Lith ion battery good for 500 jumps according to manufacturer.
Our shop uses a 10,000 amp unit bit that was a bit to pricey and overkill for me.

Best price I found.
Goodall Start All Lithium Ion Jump Pack 12V 2500 Amp JP-12-2500T

 

I can tell you they will jump a completely dead tractor with 4 group 31s. And more than one back to back.

Ours never get drained and are always plugged in when not in use.

 

$159.00 is a good price.

 

Pretty impressive there.