This device repaired 2 batteries, that were weak, after the treatment with this device I did a voltage check, & the batteries are retaining their full voltage. Now they're cranking like new!
Larry DimasiMerbein, Victoria, Australia 
In part 1 of Larry’s video below, he demonstrates how he connects the Infinitum Desulfator paralleled with a charger.
In the second video testimonial below, Larry successfully revives a dead 12V Exide 700CCA truck battery. After charging the battery with the Infinitum Desulfator installed, the battery cranked a truck like new.