A123 Worlds Smallest VS. "Strongest" 12V Jumpstart battery

In this video i finally decided to show you how IMPRESSIVE are these A123 cells. During the test, when the starter ran for about 2-3sec, the current reached 230A.

The GM volt wanted to use the same A123 brand and chemistry of these cells.

I never saw any smaller booster pack than this one that i built.. even though i searched on the www or in any stores.. so i believe that this is probably the most compact and powerfull boostpack in the world... They dont need to be plugged like 10 or 15 minutes like many "booster" conected to lighter plug....

This one can quick boost in less than 30sec.. just the time to connect it.. no need to wait!

For those who ask about battery mixing.. there is no problem.. their charge voltage is 14.4V (3.6V/cells) and this is the same common voltage of any alternator charging voltage. their charge and discharge profile (graph curve) one of the most similar than SLA (lead acid)... Nicad or NiMh can not do that... they can explode... the A123 can not explode.. just search about: "A123 Nail test" on youtube you will see... they are SAFE battery.. no toxic.. no fire...

In this voideo i'm not trying to sale them.. I repeat: I just want to show people that the NEW Lithium battery are far away from the last that explode (Sony lithium cobalt.. like on the laptop or cellphone..)

Like for the SAFT battery, the army is using them too.

I know these A123 cells perfectly cause i tested them and i know every of their caracteristics. Just ask.. that will be a pleasure to me to tell you about them!

Doc

• Category

  Autos & Vehicles

[ChuckyDoll79]

Est-ce possible de remplacer une batterie de voiture conventionnelle par les batteries de type LiFePO4? Et ce, même durant les démarrages à froid en hiver?

[Doctorbass]

Oui biensur. mais ca reste couteux pour le moment. les LiFePO4 de puissance sont capable de plus de 70Amperes d'intensité de courant par ampere heure de capacité.

C'est donc dire qu'une simple batterie de 2 ou 3 Ah est capable de starter a peut pres tout les 4 cylindre . cependant peux et garantir ne veulent pas dire la meme chose... donc il faut un certain ratio de securité..

[Doctorbass]

Personellement je crois qu'une simple batterie de 10-15Ah LiFePO4 peux starter n'importe quel moteur a combustion pour voiture a n'importe quel temperature. ce qui donnerias environ 1000A au demarrage.

[hippyraverocker]

Surely that cannot be good for the cells? Lead acids are built to give huge current short term to start the engine. I would have thought the combination of cracking the engine and then high charge current from the alternator would destroy them.

[Doctorbass]

These kind of lithium cells can last for 2000cycles compare to lead acid ( 200 cycles) they can be cdischarged at 60C ( 140A) each cell and be charged at 4C ( 10A)

but since this pack is not built to stay connected to teh alternator, it does not really matter for the few second it is connected to it

[Doctorbass]

This guy you are talking about is ME.. and i can ensure you that it start any 4 cylinder engine no problem. I also tried to disconnect the oem battery and to start the engine ONLY with the tiny battery and it work. Tis battery have a C rate of 60C at 2.3Ah wich is around 143A for 10 second.. but it deliver much more under heavier load like a starter.

Car maker dont want to spend $ on lithium battery to start ICE .. they preffer making an electric car with them as well

[Ivaylo Minikov]

Very nice :)

[PA3555]

bah comme un batt 12V nautilus de bateau 1000A a 2000A

[compaq2441]

You can now buy these batteries direct from China.....

[practicalcreation]

Oui, mes tres couteux a ce moment. Meme un batterie de vtt/motoneige LI-Po est de 400$ US. Tres bon batteries ausi. Meme les li-ion ou Li-Po generic 26650/500 de la Chine se sont 15$ cdn chq.

[practicalcreation]

26650's are basically D-cell batteries, 26500 are c-cell. There are a few portable booster packs that uses these cells instead of lead acid. There are also motorcycle, atv & snowmobile li-Po batteries that use these batteries. The drain is not all that different than a lead acid. However the amp flow is slower due to regulation. The danger is leaving the lipo/li-ion battery connected to the car and charging. Get if off ASAP.

[portaaids]

As he has stated above, the way he has it directly connected to the car battery and alternator is not good for the battery pack (although A123s, as are all LiFePO4 chemistry batteries, are extremely robust). However there are lead acid replacement LiFePO4 batteries out there that are the same form factor as a standard car battery and have the necessary electronics to act just like a lead acid battery. It is certainly one way to lighten your car.

[johngrzan]

you kidding turnigy. google it and see the backlash of faulty product

[asa9enaka]

The battery in the video is ANR26650M1-B with 2.5 Ah capacity. A123 has a new bigger battery. The AHR32113M1Ultra-B with 4.5Ah capacity.