Just some random questions/discussions in trying to learn more about batteries (more to be added on later in the course of the discussion 
.
Rather than just making up numbers, lets say you have a one of these:
http://www.interstatebatteries.com/...unique_id:MT-35|Toyota_Camry|2003_US_V6/3.0L)
Cranking Amps: 690
Cold Cranking Amps: 550
Reserve Capacity (min): missing info
1) What harm, if any, is there in dumping 30 volts into a 12 volt car battery (not to mention the car electronics?)? A specific example would be something like this:
http://www.hsn.com/products/mighty-jump-pro-emergency-car-battery-jump-starter/7259651 (20 AA Alkaline in series * ~1.5 = ~30 volts and ~2 Ah).
1.1) Supposing you don't care of the harm and you "just wanted to get home"... would it even work? So, I'm sure that it probably works in some cases, what are the conditions that it would and what conditions would it not work? Obviously these are boosters and not starter (you can't disconnect the car battery and expect the car to start). But at what point can it "not boost"?
1.2) What about replacing the alkaline with lithium like CR123A (using enough batteries for similar voltage)? Would it still work due to the different max current draw and other things else that I don't know about?
1.3) What about replacing them with LSD NiMH (AA) [1.2 v * 20 = 24 volts]?
1.3.1) Since these are rechargeable and not disposable, any harm to the batteries?
2) There are old treads discussing using lithium batteries as a source for jump starters... but back in 2006, the cost was prohibitive. And even, today, lithiums are still more expensive then SLA/AGM/GEL, however with the production volume up, cost has gone down and more viable. Making these variations of this product pop up around the net: http://antigravitybatteries.com/microstartxp3/
2.1) If I had to guess, they are either using Lithium Cobalt Oxide or Lithium Iron Phosphate. And for cost, in some sort of common form like 18650 wired in series and parallel. Maybe 5S-4P configuration gets you (2 Ah, 3.7 v) = (10 Ah @ 14.8 v). Videos on the Internet shows that it works, but is there any harm to the lithium battery?
2.2) Stumbling around, I find that max "constant" draw is 2x, so for a 2Ah, it's 4 amp before the battery is damaged? But these products are not boosters but starters, meaning you can actually disconnect the battery... in which supposedly it's providing 400 peak amps with 200 cranking amps. What are max peak (or burst) draws on the different types of lithium (rechargeable) and is it possible to be providing 200-400 amps?
Maybe soon, we'll replace current chemistry batteries with glucose based batteries: http://www.greencarreports.com/news...ry-has-10-times-energy-of-lithium-researchers
Good karma for your thoughts on the subject...
.Rather than just making up numbers, lets say you have a one of these:
http://www.interstatebatteries.com/...unique_id:MT-35|Toyota_Camry|2003_US_V6/3.0L)
Cranking Amps: 690
Cold Cranking Amps: 550
Reserve Capacity (min): missing info
1) What harm, if any, is there in dumping 30 volts into a 12 volt car battery (not to mention the car electronics?)? A specific example would be something like this:
http://www.hsn.com/products/mighty-jump-pro-emergency-car-battery-jump-starter/7259651 (20 AA Alkaline in series * ~1.5 = ~30 volts and ~2 Ah).
1.1) Supposing you don't care of the harm and you "just wanted to get home"... would it even work? So, I'm sure that it probably works in some cases, what are the conditions that it would and what conditions would it not work? Obviously these are boosters and not starter (you can't disconnect the car battery and expect the car to start). But at what point can it "not boost"?
1.2) What about replacing the alkaline with lithium like CR123A (using enough batteries for similar voltage)? Would it still work due to the different max current draw and other things else that I don't know about?
1.3) What about replacing them with LSD NiMH (AA) [1.2 v * 20 = 24 volts]?
1.3.1) Since these are rechargeable and not disposable, any harm to the batteries?
2) There are old treads discussing using lithium batteries as a source for jump starters... but back in 2006, the cost was prohibitive. And even, today, lithiums are still more expensive then SLA/AGM/GEL, however with the production volume up, cost has gone down and more viable. Making these variations of this product pop up around the net: http://antigravitybatteries.com/microstartxp3/
2.1) If I had to guess, they are either using Lithium Cobalt Oxide or Lithium Iron Phosphate. And for cost, in some sort of common form like 18650 wired in series and parallel. Maybe 5S-4P configuration gets you (2 Ah, 3.7 v) = (10 Ah @ 14.8 v). Videos on the Internet shows that it works, but is there any harm to the lithium battery?
2.2) Stumbling around, I find that max "constant" draw is 2x, so for a 2Ah, it's 4 amp before the battery is damaged? But these products are not boosters but starters, meaning you can actually disconnect the battery... in which supposedly it's providing 400 peak amps with 200 cranking amps. What are max peak (or burst) draws on the different types of lithium (rechargeable) and is it possible to be providing 200-400 amps?
Maybe soon, we'll replace current chemistry batteries with glucose based batteries: http://www.greencarreports.com/news...ry-has-10-times-energy-of-lithium-researchers
Good karma for your thoughts on the subject...
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