[shorod]

If you're referring to a desulfator, I've had mixed results with mine. I have both a standalone unit and a charger with a desulfator mode. I suppose if they are used regularly they would be successful at keeping a battery working well for longer than typical periods, but for rejuvenating a battery that is already weak/dead, I wouldn't rely on it.

That being said, I do have some empirical results using the standalone desulfator with some AGM batteries used in electric go karts. The place was having issues with the run time on their go karts to the point where they had to lower the race durations after only a few months because the karts were not retaining enough charge. I hooked up a current prove and voltage probe to my datalogging oscilloscope, made several runs to watch the discharge profile, then used the desulfator and ran the same test. The desulfator did help get the charge back to about 70% of the original run time, but never fully brought them back. The place ended up trying a different brand of batteries.

-Rod