Due to a problem with my solar charger system during inclement weather, the expensive 5-year old battery in my RV was allowed to discharge over the course of a couple of months and was no longer fully charging. I was resigned to purchasing a brand new battery, but then discovered a replacement would cost over $250. Figuring I had nothing to lose except $70, I decided to give the PulseTech Xtreme Charger a try. When I removed the battery from the RV, I had initially hooked it up to a traditional bulk charger. However, the battery wouldn't hold a charge above 12.8 Vdc. When my PulseTech arrived a couple of days later, I connected it up and let it do its thing for a few days. When I rechecked the battery, it would now hold a charge of 12.9 Vdc overnight, so I reconnected it to the PulseTech and left it alone for an entire week. It would now hold a charge overnight at 13.1 Vdc. I wound up using the PulseTech for a total of three weeks, after which the battery voltage slowly but surely increased to 13.4 Vdc. I have little doubt that had I left it connected even longer then I could have eventually achieved the magical level of 13.6 Vdc, but I needed to reinstall the battery into the RV for quick mini-vacation. Bottom line: the PulseTech does indeed work, but you need to be very, very patient. If you absolutely need your battery healthy the very next day, then this is NOT the charger for you.
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