The CTEK MUS 4.3 Polar, No. 56-958, is a fully automatic "connect and forget" 12V charger with eight charging steps and it offers selectable 0.8A, and 4.3A programs. The Recond and Snowflake modes operate individually or together in both 0.8A and 4.3A programs providing flexibility for the user, according to the company. This charger offers a wide charging range on all lead-acid battery types from 1.2Ah up to 110Ah with additional maintenance capability to 160Ah. Splash proof and dust proof (IP65), the MUS 4.3 Polar protects vehicle electronics, is spark-free, is reverse-polarity protected and is short-circuit proof. The MUS 4.3 Polar includes a five-year warranty.