I am a partner in a battery desulphation company located on the east coast. Our service extends the life of the battery from 40% to 90% depending on the condition of the battery. Our service is done at the client's location and we provide a before and after report comparing the voltage, specific gravity and impedence readings as well as any recommendations on the individual cells of the battery. This service saves money by extending the life of the battery and is much less expensive than the cost of a new battery (averages between 30 and 40 percent of the cost of a new battery). The battery reconditioning companies out there make some acid adjustments and make the battery look good, but they really do not do anything to restore the functionability of the battery. Our system removes the harmful sulphur from the lead cells and allows the electricity to be absorbed into them.