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Patented square wave technology makes the BLS the most effective desulfator available. The BLS-48N works with 48 volt battery powered vehicles or battery systems, most commonly used on golf carts. Ideally mounted full time to constantly keep the batteries in optimum condition. The system should be charged regularly. It will rejuvenate old batteries and extend the life of good working batteries, it can double or even triple battery life. Comes with 3/8′ eye rings for attachment.