Battery Life Saver BLS-12/24BW 12 and 24 volt Battery System Desulfator Rejuvenator For use with 12 and 24 volt battery systems, most commonly used with solar/wind battery banks Can extend battery life two to three times by removing and preventing the accumulation of lead sulfate crystals using patented square sine technology Rejuvenates old weak batteries. Maintains new batteries in optimal condition. Prevents slowdown. Restores power and performance to any electric motorized vehicle. From golf carts to trolling motors, you'll regain lost performance. This model is the same as the BLS-12/24B, but has 4 foot wire leads giving an 8 foot span Comes with O-rings for attachment. Alligator clips are no long provided by manufacturer