WheelchairDriver

I used a Pulse Repair battery charger to recondition my batteries. They wouldn't hold a charge and would die after a couple hours around the house.

I had to run the 24 hour repair cycle 4 times.
I started with a dead battery, ran the repair cycle, then tested it for a day. After the first cycle, there was no improvement. After the second repair cycle there is a slight improvement. Then after the third repair cycle there was a significant improvement.

Now the batteries last for two full days!
https://www.amazon.com/dp/B097D397M6
Also had to make a XLR adapter to charge it through the joystick..

Let me tell you some interesting information.
First of all links for affiliates are not trustworthy as you are the salesman and stand to profit. So it hurts credibility. IF youare an affiliate!

And theres no magic here.
Its a cheap charger and it has way too many marketing stages. 3 is the maxiumum needed on any battery. And even 2 stage if perfect if you can manually fine tne the termination point.

As you discharge any type of lead based battery, the acid in the water based electrolyte is chemically changed (used up) and it coats the plates and all the microscopic fine active plate lead particles with a coating of lead sulfate. And the opposite plate with lead dioxide. The electrolyte at maximum discharge point has little acid strength left and it is almost water. Which is why it feels "flat"... In the case of a gel battery same applies but the electrolyte is thickened up by the addition of silica gel crystals to make it into a very thick immobile paste.

As you RECHARGE a lead battery, this lead dioxide and lead sulfate are chemically returned back to the electrolyte and the led plates should be completely free of sulfates.

BUT to recharge a lead battery FULLY as in do so for long enough to complete that process 100% on every charge takes around 20 hours. around 8 to 12 hours charging, and 8h on float to top off. On a very DEEP discharge.
And takes at LEAST 16 hours on a rapid charge/float cycle if its discharged by say half.
A top off on an otherwise UNUSED full battery after a month in storage still takes at least 8 hours.

But sadly mobility chargers are shit.
I have around 10 of the things rusting away in my garage where I dumped them one after the other after testing exactly what they did.
And they ALL charge at the wrong voltage (another problem) and then they end the CV charge stage FAR too soon and give a green light.
And only the ones that then go to float would actually make up for this in time if you were to wait the full 16 to 20 hours+ every charge.
You cant do that it simply isnt practical.

So what happens is this.
Every time you recharge with a mobility charger, SOME lead sulfate is allowed to stay on the plates, mostly internally in the active pasted parts of the grids. Over time this build and builds. The battery impedance increases. The capacity decreases.

If the chargers the mobility industry shipped WERE ANY GOOD this wouldnt happen. And it doesent happen on mine because I use a proper charger. Configured correctly.

Now the very act of CORRECTLY charging is by definition returning the lead sulfate back to the electrolyte. You dont need pulses, waves, negative pulses or any other marketing nonsense. Non of that helps. Its simply a dc reaction.

Any fancy pulse, or wave form, or other charger is simply a charger that WORKS just keeps on charging for long periods that eventually removes at least some of the lead sulfate back to the acid/electrolyte. Or it charges at a damaging high voltage for a limited period. The pulse or wave nature does nothing useful. The battery doesent care one way or another.

To desulfate a battery that has been allowed to sulfate in the first place either through continual undercharging or allowing to go flat over time CAN be rectified - to some degree - as long as you dont wait too long. The longer you wait the more impossible this becomes as the lead sulfate turns into larger xstals, that no longer conduct electricity. This means that it has then become permanant sulfation. Every sulfated battery is a combination of normal lead sulfate and permanant sulfation. How much of each we wont know until the battery is desulfated (properly charged).

From experience I can tell you it certainly wont restore full capacity. And that it will soon go back to being unhealthy. Even if it shows promise initially. As sulfates are not the only reasons batteries deteriorate.
But without falling for all the snake ol "pulse" or frequency, or waveform repair mode nonsense which is basically marketing, all you need is use a decent charger such as the beutiful ZXD of which I have 4!

See here. https://www.wheelchairdriver.com/board/ ... start=2010

Simply set the voltage to around 16 to 17. And set the Amps to a low continual level like 0.6A on group24 - that is low enough to allow the battery recombination system to cope (no destroyed gel, no electrolyte losses. And connect it up. Leave at .6A for a few days and then measure impedance and capacity to see how much you recovered. That costant fixed current will have exactly the same effect as "pulses" negative waves, and all the rest of the woo woo stuff they claim. It will return all the lead sulfate that can be, back to the electrolyte.

And then use the same charger SET CORRECTLY to 14.6V (AGM) 14.1V (GEL) and to 12A if charging via XLR or 25A if charging via Anderson as you really should.
Set it to stop the CV stage and go to float after 8 hours. Or around 0.25 to 0.3A and to a 27.2 FLOAT state and set that to last another 8 hours.

Then the battery will be CORRECTLY charged in a way no mobility charger gets close to. And no more sulfation.
Is simply the act of charging that "desulfates" a battery. If its done correctly.


This thing can do a VERY controlled noise free:
0-60V
0-50A (to 3000 watts output max)
as a power suppy.
It can also be set up as a GOOD 3 stage charger with the correct parameters and current cut off as well as a "desulfator" for anderson or rapid charge at high amps via Anderson too. Its a very accurate and powerful tool.
https://www.wheelchairdriver.com/board/ ... start=2010

And no I dont sell them! I know a lot about batteries and I buy these with my own money.