PWM solar charge controllers with a big capacitor bank in parallel with the panels are the best. They give such powerful pulses that you can hear the wires ticking quite loudly.

these 6V boys already have heavy rogue sulfate crystals really all over the place, everywhere on the plates. this is probably a difficult/impossible-to-solve case though. The second issue is that because all the sulfatation is built up, the acid literally is greatly watered down as a consequence. (means : the SO4 is no longer in solution but finally bound in the crystals, reducing the acid level in the water) . I would assume these are dead.

I've taken completely discharged batteries, and brought them back to life. If a battery is completely discharged, most chargers won't work. You have to trick the charger by connecting a good battery in parallel with the bad, and then put on the charger. Once the bad battery shows a positive charge, then you can go about just hooking up a slow charger, 1 or 2 amps, and let it charge for 24 hours or so, and it should be good to go. If it DOESN'T hold a charge at that point, then here's what you do. 1. Take your battery to an auto parts store of your choosing. 2. Buy a new battery. 3. Leave your old battery for a core replacement. 4. Install your new battery. 5. Resume using whatever battery-powered equipment that the old battery came out of. Carefully following these important steps for replacing an unrecoverable battery will help insure continued usage of your battery-powered device with limited frustration. LOL

PulseTech "120volt" plug in Desulfators work great, constantly pulsing the battery plates to break up accumulated Sulfation from not being used, charged and maintained. I've used these units on many 6 volt deep cycle golf cart batteries and they work well. Lead acid batteries require attention and charging/discharging & charging to keep Sulfation off of the battery plates. If your dealing with 6 volt deep cycle batteries, you connect two six volt batteries together and use one 12 Volt PulseTech Desulfator. They have saved many of batteries for me as well as rejuvenating a few " left for dead" batteries.

BTW: Did anyone care to notice that he might be using a 12V desulfator on a 6V battery. ICYW: Desulfators need to draw a little power from the battery to operate, and if the voltage is not high enought. the desulfator will not operate.

thank you i confirm that I also did multiple testing with desulfators and never got any positive result

I really got a charge out of watching this. Thank you for the infoTainment. Cheers!

If may add my 2 cents, this is important to revive any battery, after removing the old acid, turn the battery on its side and flush with nominal pressure of water, it is to remove the broken down pieces of the lead inside, these pieces short out the battery and touch the plates, flush it well and remove these contaminants and also free any debri still existing on the plates, drain well, then use an Epsom salts mixture, good luck

excellent music !

Loving the new background music!

Greetings, during the sulfation process, do the residues fall to the bottom of the battery or simply disappear by virtue of Epson Salt dissolves? If it falls to the bottom is it important to get rid of it for the best functionality of the battery itself?

i was just wondering this same question yesterday, I bought the 45 dollar one on ebay that does 12-48v and i think it works and i hooked it up to my oscilloscope and it definitely is doing something because i can see the pulse waveform . cant wait to see the next installment, also would you be able to hook you desulfator to the osilloscope in the next video?

Very interesting video...thank you! I recently purchased a BLS 36v Desulfators for my EZ-Go golf cart. I tested all 6 6v batteries after fully charging them each individually and letting them "rest" for about 10 hours. Each tested at 6+ volts and each does not appear to have any "dead" cells. I have had the BLS installed for a full week now, discharging the batteries by running the cart daily to the point of barely moving the cart, then recharging again. I still can only get just a few minutes of use out of the cart. Would you say this is a wasted effort trying to revive the batteries or maybe another problem? Just curious! Thanks!

Thanks, do you know if Noco chargers which come with desulfator included like Noco 5 do work? Thanks

What about fancy smart chargers like NOCO brand that has a repair mode. It says in the documentation it will bring the voltage up to about 16.5 to desulfate the 12v battery

Always love your videos. I want to make a solar portable power generator and heard the 6 volt trojans are great. But you got me thinking about making a lithium battery pack. I was wondering tho about the normal solar charge controllers if they would work for lithium batteries?? I am also considering making lithium battery pack using the ones like you did for your bike on electric wheel chair, on my car, etc. what do you think?

i think the best way with a lead acid it to take it to pieces and clean it properly. Or you can try an alkali cleaner. But the problem is you need to pour out the acid and store it somewhere whilst you do this.

Did you try any other desulfators? And if yes which you had the most success with?

Perhaps if you take a bad battery, desulfate it, then replace the electrolyte?

To date, I have not seen one published scientific journal showing that desulfators work. To date, none of us have seen a desulfator company show us a live video on battery with transparent case showing the sulfate crystals being broken down. We hear anectodal stories but no hard science proving that any of these units desulfate anything.

By the way Rinoa Super-genius, A desulfator like that doesnt supply enough current to do even the smallest batteries. I would get something like the infinitum whcih instead of a few milliamps, it will supply a couple of amps of current to oscillate the plates. Plus it needs to always be on a trickle charger, not to mention the battery needs to be in the right condition

So the Whizbang plus unit wasn't any good? Which desulphators have you tested that are stronger, better & faster than the Whizbang plus that you can actually recommend?

Yeah, I got duped into buying a WizBang as well. I saw no difference.

That battery is only about half charged.. Charge it up to 7.2v till its only taking an amp or less of current.. The resting voltage should drop to approximately 6.4 to 6.6v after sitting for an hour

I just yeet 24 volts at my 12 battery that I’m desulfating until it gets warm or the seals start popping

not defending desulfators but if your battery started off with 52 amp hour capacity it means it is not heavily sulfated to begin with so you cant expect to notice a difference. desulfators are for batteries which are sulfated and their capacity has dropped significantly but voltage not lower than 10.5 as it gets too hard when its tooo low

I picked up a good desulfator from Ebay several years ago. Wasn't cheap though. I just had to replace Everstart Max Walmart battery. I purchased it in 2004 . The desulfator kept it alive for 10 years. I've recovered about 5 batteries over the years with it.

Cold you repeat the experiment using a 12v battery?

very good

is the desulfator not supposed to be used while trickle charging the battery?

Hey, what's your opinion on max voltage for a healthy(near new) 6v golf cart battery? And when driving around, what is the lowest voltage I should let it get down to? I want to keep my batteries healthy for as long as possible?

Desulfation takes weeks even months (2-3 Months) ......it works for me, i am using it on my inverter and car battery. Inverter battery 10 years + now still running like a charm.

I used a desulfator kit with good success. The key is 1) not all kits are equal (most are low power and probably don't do anything) and 2) you have to charge the battery at around 14.5 volts. You can't just attach a shitty 12v trickle charger and expect it to work.

You didn’t finish the absorbed in charge so what are you really testing? Charge of the absorption voltage which is probably 7.3 V, until the tail current reaches .1 C at least.

can I buy that from you for 10.00?

You know the desulfator effect on ni-cd or li-ion battery ?;can this regenerate this?

Kick ass music!!!

The wiz bang plus is supposed to be used on a battery that is being maintained. You are not supposed to leave it on a battery for 2 months without charging it. You likely had sulfation occurring from the battery’s self discharge not being addressed. Also, please use a smart charger. The way you charged it can easily overcharge a lead acid battery. :/

Did you give up .... Keep a trickle charge with the whizbang ?

I use a Pulse Tech PowerPulse passive desulfator, they claim to have a patented frequency they use to desulfate batteries that can extend battery life up to three times, I have been using it on my BMW battery for the past three years and never have any issue's starting even though I only drive about 25 miles per week.

mr super when the next coming up mr desulfer

I thought I'd comment as I was browsing new 'desulfator' videos. I (M.I.T. certified in EE) have spent the last 3 years developing and testing a complete recovery system for L.A. batts. Mainly auto and marine sized are the targeted units. I have ascertained the actual ionic process and achieved a statistical 33% recovery of 'junk' batteries back into service with no chemicals or cleaning etc. Turnaround is about 24 hours for a 12V 50Ah batt! The batt can be as low as 2V rest V. The system auto detects the battery condition and calibrates the recovery and qualification processes which include dedendriting, desulfating, charging, pulse charging, reflex charging, grid & buss bar testing, hi pulse discharging, cranking amp and C/5 Ah rerating. The system (has 4 cables) can sequentially process two batts and can hotswap for 24/7 recovery, fully uploadable data log for the last 24 recoveries. It is capable of 1000 (1KA) pulses with an avg continuous maximum draw of 300W, peak rating @ 350W. The display shows precision voltage, avg current,, pulse current, cell temps, Ah delivered, and the phase of recovery (there are 10 phases). Built in high laminar flow battery cooling system for rapid turnaround, rev. polarity protection, short circuit protection, electronic fusing, overheat shutdown, crowbar fusing. System reclassifies appropriate battery use...for automotive (SLI) or 'backup' UPS applications. System throughput is about 20 'good' batteries per month yield from a 60 battery feedstock (average 12 hour per batt.) It employs multiple 'live current' testing protocols to assess battery condition and perform early rejection as required. System provides long term float charge 'maintenance' capability for eight recovered batteries. It is portable & UL listed. I wanted to create the 'final' system, no more guesswork & snake oil. It tells you the final battery's Ah rating and updates the cranking amp rating improvements on the fly during the recovery! It also tells you what the failure mode is for a rejected battery.

Your supposed to keep a trickle charger attached on battery as well as the desulfator in order to desulfate the battery

Using desulfator with a new battery will give u best result and battery last so long then normal battery lifetime.

I'm not 100% on this but I don't think it's a good idea to let one of these idle on a battery for long periods of time without some charge. I know these are designed to stay on your battery for a few months while the battery is in service but when the battery is powering desulphator the battery is discharging. The great killer of lead batteries is not putting back what you used ASAP. Perhaps try this with some charging.

Desulfating needs to be done at 10A to 20A or more depending on size for 3-5 minutes or more with caps off and in an open area away from flames and electrical sparks because the battery will emit explosive hydrogen. Several YT videos show how this is done using a DC welder. It is quit dangerous because apart from the obvious danger of violent explosive gasses, you could be sprayed with boiling hot acid, lead shrapnel, and other nasties. However this is the only way to effectively desulfate these batteries.

2 months?????

I see one major problem with this video. That is a wizbang BD-12 12 volt desulfator. You are using it on a 6 volt trojan battery. I am not suprized it didn't work.

A desulfator will only work while the battery is being charged. You need to cycle the battery. And they aren't magic, If the battery is too far gone (internal resistance to high) it won't work.

Probably not a 12v desulphator. Also, desulphators work best while receiving a trickle charge.

It's the cycling on a good charger that desulfates not a desulphator

These don’t work because most batteries die from positive plate corrosion not sulfation.

most all the desulfators you can buy are toys they dont zap the sulfation with enough pulsed current... we are working on a high power desulfator to restore large batteries

YOU haven't fully charged battery before discharge test. That's way, why "desylsator doesn't work".

This battery is shot completely.

Take it apart!

Has anyone actually had much luck with desulfators? Any recomendations, don't wanna spend much but don't wanna waste money on cheap junk!

I bought one of those and it doesn't seem to do anything for my half dead solar batteries either! But thanks for the verification!

I distracted by waving tail at 03:39.

Ha ha "Crappy desulfator" you allways make me laugh :-)), i cant see how just a discharge however clever can do anything. So do you think heavy charge then heavy discharge cycles are better for batterys?

desulphated with out charging? Your kidding right?

super dune a dune sell desutfadter unit 70.00 dollars in interest is worth it

look at the floor its on ng

52.9 to 53.5 an improvement and you call it a failure. 2 months is 10% of a batteries life, and then it improved. Yes you have one sample but you can not say it is due to error. You don't know what the error is. Seems you are writing to the conclusion to your opinion.

cheaper to get new bat :D

Just overcharge the battery with 2A for 7days and you will see way better improvement than this ...

dude it doesn't take a month to disulfate a battery

Thats some dodgy testing there. I'd like to see more consistent and better measured charging. The discharge data is useless without amp hours in, numbers to compare to. As well as temperature figgures. I'd call it a neutral result. There was some improvement, especially on the voltage. further testing is needed to see if it was from the de-sulfator. Did you flunk out at science or are you being intentionally facetious? Having said all that I doubt a de-sulfator that small could have a coil big enough to do much to a battery of that size. A look at the output on the scope would tell a lot. Spike magnitude and duration etc. I dare say many of the commercial de-sulfaters dont work very well. If you want a good one, study up and make it yourself. I've seen very positive results from a number of systems I have made. Most of the good ones have a charging ability too. Like this circuit Sohei Thoth developed a while ago. He has a heap of videos over a year or more leading up to this one AFIC SJR MultiCharger Or if you just want a desulfator that doesn't charge (Much) and is easy to make. This Joult Theif I made a while back should blast the plates of larger batterys like yours nicely. MOT Slow flash Joule Thief. Single transistor flasher with no capacitors. Have a look inside while its running. You will see it working. Of course results will also depend on the condition of the battery being re-conditioned. Looking at all the (Brown) sulfation on that cell, I'd say you could get much better results with a stronger system. If you look inside when its running. you can see the ion transfer reversing the damage. Smashing crudd of the plates. Although that battery has plates designed for CCA over deep cycle and may deteriorate beyond recovery too. The plates are so very thin and delicate. Sulfation is holding them together in places. Its borderline whether it can be improved.

Annoying audio track

Another gimmick I guess

The music tho.....