A mains powered 12V Battery Charger. The small XS 800 (0.8Amps, 12V) charger is ideal for jet skis and small boats. It will also maintain charge for batteries up to 100Ah. Battery maintenance charger with CTEK features 4 stage electronic charging. Time to charge 60Ah battery 60 hours, time to charge 20 Ah battery 20 hours.