Schumacher SC-600A SpeedCharge High Frequency Battery Charger for $29.54. Shipping is $0.97 for a total of $30.51shipped. Here is a screenshot for reference. Alternatively, it is also available at Amazon for $30.55 shipped. This battery charger monitors battery condition to adjust charge rate downward to prevent battery damage and includes 50-amp clamps for top and side-mounted battery posts.