This project has been built as per the YouTube link in the description.
I am documenting it publicly here for any who want to execute it.
It requires a 36V, 8A to 10A capable DC Power source. Such as a 36V Meanwell SMPS PSU found in Amazon or EBAY.
There are 2 main double sided PCBS, about 6" x 4" each.
1) A pulse driven 'Power Board" which is detailed in my other battery desulfator project in this site. It includes heavy duty custom snubber (Not a MOV not a TVS) to handle inductive backemf transients which destroy more common weaker designs. Visual feedback of the transients.
2) A 'control' PCB which uses a TL494 PWM IC and some opamps with voltage, temperature and hall effect current sensing for the 12V/6V lead acid (not GEL) battery being processed. A simple Calibration protocol for the ACS 713 Hall effect sensor is documented.
3) The control PCB runs the Pulse PCB and has a couple simple controls; a couple switches and a 'volume' control Potentiometer for setting the desired average current flow.
Now the claim of 12KW pulse power is based on actual sampled pulse currents x differential voltage drop across the battery. As a result of this multiple 100% copper 12 AWG cables are required to handle the pulsing. Otherwise #6 to #8 AWG could be used but they are a bit inflexible.
Kelvin style voltage sensor is employed and an NTC thermistor is used for battery temperature sensing.
The average currents are throttled back as the battery reaches Equalization voltage or if its core temperature approaches 45 °C. Thus the charging profile is managed via CC at first then CV as EQ V (15.75V or 7.85V for 12v/6V respectively) is reached and Constant temp if 45°C is reached.
Max. average current consumed is limited to 7A and delivered as hi current pulses via a low ESR capacitor bank and MOSFET switching bank .
There are independent calibration trimmers for the EQV setting for both 6V & 12V batts.