Timeline for Jump start car from lithium ion laptop battery
Current License: CC BY-SA 3.0
10 events
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| Jan 31, 2018 at 15:39 | comment | added | Russell McMahon♦ | @Gleb 10 seconds may be too short, deep-ending on many factors. 10s x 10A = 1s x 100 A at 100% efficiency. More like 300 - 400 A for a second or few would be better = longer charge time and/or larger charge current. | How can it work? - Good question. DOES it work. Yes. Often. From above: "Note: You will find much discussion on whether jumpstart energy is first saved in the car battery. I'm wholly convinced that it is. I have started cars from battery packs joined with twisted connections and thin wire and connected to the battery by 3 feet + of "lamp cord." | |
| Jan 25, 2018 at 15:28 | comment | added | Gleb | @RussellMcMahon does it mean that 10 seconds of charging from a lithium power bank can bring car battery back to life? What would be the current during those 10 seconds of pre-charging? even at 10A which is already quite high for Lithium battery at 12V -- it would pump just 0.02 Amper*hours into the car battery. That's 0.05% of capacity of a small car battery - how can it make any difference? | |
| Jan 29, 2015 at 15:32 | comment | added | PlasmaHH | Note that quite some products like APA 16547 Power Pack provide 600A direct starter power, but those are mostly low Ah starter batteries with a convenient package. The same way you can just get a (charged) spare car battery from somewhere else ( I have been doing this quite a lot of times). | |
| Oct 16, 2014 at 15:18 | comment | added | Russell McMahon♦ | @KyranF Essentially, yes. They may dump a supercap to get more available energy quickly but the leads, cllips, plugs and internal battery cannot handle typical CCA levels at voltage drops that are useful. They say "TIPS for using the PowerAll: 1. When Jump Starting a car with a dead battery, you often need to leave the PowerAll connected for 10 seconds (or longer) to build up enough of a charge in your car's battery. Wait 10 seconds between start attempts as well." \ One user comment said "20 times without a battery". | |
| Oct 16, 2014 at 15:07 | comment | added | KyranF | so are you suggesting that these devices are connected, allowed to trickle/fast charge the car battery enough to then attempt to start the car? Rather than a 10 second "attach and push button"? | |
| Oct 16, 2014 at 15:03 | vote | accept | Lessac | ||
| Oct 16, 2014 at 14:35 | history | edited | Russell McMahon♦ | CC BY-SA 3.0 |
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| Oct 16, 2014 at 14:28 | comment | added | Lessac | added link in the question to the actual battery model, which says 9 cells. So yes probably 3 cells each in series of 3. | |
| Oct 16, 2014 at 14:16 | history | edited | Russell McMahon♦ | CC BY-SA 3.0 |
added 853 characters in body
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| Oct 16, 2014 at 14:09 | history | answered | Russell McMahon♦ | CC BY-SA 3.0 |