The batteries around here get charged every two months or so to keep them topped up. My work horse charger is the Can Tire automatic one which is 6 or 12 volt and does deep cycle batteries to. The 15 amp Power Runner gets used lots to and will also flash codes if the battery is shorted internally or sulphated but it has no deep cycle choice. The more expensive CTEK is probably my favorite. It’s compact and can be left on indefinitely as it will go into maintenance mode. Besides charging and desulphating all kinds of batteries including the new sealed gel type, it can be used as a power supply. Although it is Swedish designed, the small print on it says, you guessed it, ‘Made In China’.
