[DeTomaso] Lithium Jump Start Gizmo is this Real???
Sean Korb
spkorb at gmail.com
Fri Dec 22 17:48:08 EST 2017
They work very well for jump starting your car and I have use it on #1382
and many other cars. But. You have to recharge them using the
manufacturer's instructions (usb charge on the ones I have seen) so they
will *not* take prolonged high amperage charging or run accessories long
term.
But they *could* do that in parallel with a high quality battery management
system or BMS. That's what makes the Lithium race batteries so expensive
and the cheap ones dont't have quality parts or prolonged testing in the
field. Most of the batteries say on the box to not use them in parallel.
There are commercial and open source BMS systems. They use a
microprocessor to measure the voltage of each 3.6V cell in the system and
its temperature millisecond to millisecond to bring all cells into
balance. If one of them is lagging it can add amps or shunt amps away. If
it goes bad it will become a resistor. In your power drill this just makes
it get hot or die. With a high amperage system like a starting battery or
an electric motorcycle it could overheat and catch fire if each cell is not
attended to individually and quickly.
Lead-Acid is a much more resilient chemistry for high amperage charging but
even those need to be handled with some care. They don't explode as often
as they used to but it's still a thing. Lead is very heavy and it only
lasts maybe 1/5th the number of discharges and recharges that Lithium does.
Good god, I am a boring person! Just buy a battery built for the purpose.
sean
On Fri, Dec 22, 2017 at 11:52 AM, Ken Green via DeTomaso <
detomaso at server.detomasolist.com> wrote:
> I Keep seeing these things for sale, are they real?
> [1]http://drivinglife.net/best-lithium-ion-jump-starter/
> They seem to claim that a pretty small lithium battery can jump start a
> car? Are they just good for a small engine that starts immediately?
> If they are real, why can't you put several in parallel for extra
> cranking, and use them as your car battery?
> This one claims up to 20 starts and up to a 6 liter gas engine:
> [2]https://www.amazon.com/NOCO-GB40-UltraSafe-Lithium-Starter/dp/B015TK
> UPIC
> Ken
>
> References
>
> 1. http://drivinglife.net/best-lithium-ion-jump-starter/
> 2. https://www.amazon.com/NOCO-GB40-UltraSafe-Lithium-
> Starter/dp/B015TKUPIC
>
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--
Sean Korb spkorb at spkorb.org http://www.spkorb.org
'65 Suprang,'68 Cougar,'78 R100/7,'60 Metro,'59 A35,'71 Pantera #1382
"The more you drive, the less intelligent you get" --Miller
"Computers are useless. They can only give you answers." -P. Picasso
-------------- next part --------------
They work very well for jump starting your car and I have use it on
#1382 and many other cars.A But.A You have to recharge them using the
manufacturer's instructions (usb charge on the ones I have seen) so
they will *not* take prolonged high amperage charging or run
accessories long term.
But they *could* do that in parallel with a high quality battery
management system or BMS.A That's what makes the Lithium race
batteries so expensive and the cheap ones dont't have quality parts or
prolonged testing in the field.A Most of the batteries say on the box
to not use them in parallel.
There are commercial and open source BMS systems.A They use a
microprocessor to measure the voltage of each 3.6V cell in the system
and its temperature millisecond to millisecondA to bring all cells
into balance.A If one of them is lagging it can add amps or shunt amps
away.A If it goes bad it will become a resistor.A In your power drill
this just makes it get hot or die.A With a high amperage system like a
starting battery or an electric motorcycle it could overheat and catch
fire if each cell is not attended to individually and quickly.A
Lead-Acid is a much more resilient chemistry for high amperage charging
but even those need to be handled with some care.A They don't explode
as often as they used to but it's still a thing.A Lead is very heavy
and it only lasts maybe 1/5th the number of discharges and recharges
that Lithium does.
Good god, I am a boring person!A Just buy a battery built for the
purpose.
sean
On Fri, Dec 22, 2017 at 11:52 AM, Ken Green via DeTomaso
<[1]detomaso at server.detomasolist.com> wrote:
A A I Keep seeing these things for sale, are they real?
A A [1][2]http://drivinglife.net/best-lithium-ion-jump-starter/
A A They seem to claim that a pretty small lithium battery can jump
start a
A A car?A Are they just good for a small engine that starts
immediately?
A A If they are real, why can't you put several in parallel for
extra
A A cranking, and use them as your car battery?
A A This one claims up to 20 starts and up to a 6 liter gas engine:
A A [2][3]https://www.amazon.com/NOCO-GB40-UltraSafe-Lithium-
Starter/dp/B015TK
A A UPIC
A A Ken
References
A A 1. [4]http://drivinglife.net/best-lithium-ion-jump-starter/
A A 2. [5]https://www.amazon.com/NOCO-GB40-UltraSafe-Lithium-
Starter/dp/B015TKUPIC
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Posted emails must not exceed 1.5 Megabytes
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To manage your subscription (change email address, unsubscribe,
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Members who post to this list grant license to the list to forward
any message posted here to all past, current, or future members of
the list. They also grant the list owner permission to maintain an
archive or approve the archiving of list messages.
--
Sean Korb [8]spkorb at spkorb.org [9]http://www.spkorb.org
'65 Suprang,'68 Cougar,'78 R100/7,'60 Metro,'59 A35,'71 Pantera #1382
"The more you drive, the less intelligent you get" --Miller
"Computers are useless.A They can only give you answers." -P. Picasso
References
1. mailto:detomaso at server.detomasolist.com
2. http://drivinglife.net/best-lithium-ion-jump-starter/
3. https://www.amazon.com/NOCO-GB40-UltraSafe-Lithium-Starter/dp/B015TK
4. http://drivinglife.net/best-lithium-ion-jump-starter/
5. https://www.amazon.com/NOCO-GB40-UltraSafe-Lithium-Starter/dp/B015TKUPIC
6. mailto:DeTomaso at server.detomasolist.com
7. http://server.detomasolist.com/mailman/listinfo/detomaso
8. mailto:spkorb at spkorb.org
9. http://www.spkorb.org/
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