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Author Topic: How to convert a lead acid car battery to an ALUM Battery Part 1 to 7  (Read 30391 times)

Offline hartiberlin

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Re: How to convert a lead acid car battery to an ALUM Battery Part 1 to 7
« Reply #15 on: September 03, 2013, 10:56:12 PM »
Well I let the battery now stay open circuit for the last several days. 1st of September at 11:27 the voltage was then 10.27 ..

September 1st before midday I added 3 eating spoons of potassium Alum in to every battery cell and charged the battery again for an hour or so.

Disconnected then my charger, cause I used my second new empty car battery ( never filled with acid)  for to fill it with NaSO4 Sodium Sulfate- destilled Watter  electrolyte.


I again used 600 Gramms of  NaSO4 onto about 4 Liters of destilled watter and that was now already charging a few hours on the charger.


At September 1st at 11:32 I wrote:
I will let it charge on the EInhell charger until tommorow morning and then make measurements.


Before starting the charger the battery with the NaSO4 hat a PH-level of about 5 to 6 and a Voltage of 8.09 Volts.
The charger only displayed a charge current of about 4 amps, that is curious as the Alum Battery had a charge current of 6 to 8 amps when discharged and reconnected to
the charger, so the internak resistance of the NaSO4 Battery seems to be higher...

Offline hartiberlin

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Re: How to convert a lead acid car battery to an ALUM Battery Part 1 to 7
« Reply #16 on: September 03, 2013, 10:57:07 PM »
Made 3 new battery update videos today.
The first one is with the new NaSO4-destilled Water electrolyte:

https://www.youtube.com/watch?v=f1DSqI2jpvg
https://www.youtube.com/watch?v=Lzvy0ydMFCw
https://www.youtube.com/watch?v=9J7MhhdXWGs

Enjoy !

Regards, Stefan.


Offline profitis

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Re: How to convert a lead acid car battery to an ALUM Battery Part 1 to 7
« Reply #17 on: September 04, 2013, 01:08:48 AM »
yes stefan.the ph of sodium sulfate is neutral,alum is acidic,thats why the difference in power and conductivity.higher acid more power,more conductivity,more voltage at cathode specificly which is very ph dependant.