The PulseTech SolarPulse Battery Chargers are designed to charge, maintain, and desulfate lead-acid batteries in vehicles and equipment stored outside. The battery chargers are available in 3-, 7-, and 12-watt and reduce jump starts, increase battery power, and extend battery life by as much as three times, says the company. SolarPulse works with all types of 12V batteries, are weatherproof, and offers multiple mounting options.