safe to assume it is sealed and use an apropriat charger, ive never actualy come across acar battery that is fully sealed as it would prevent charge /discharge by product gasses escaping and would result in a big bang!!. at present level of batery tech. sealed just means you cant top up the battery , using a charger other than one specificaly designed for a SEALED battery will just buble off battery fluid more quickly and therefore shorten the battery life , so if your battery is over say 3 years old dont wory any battery charger from halfords or argos in the 10- 20 quid range is good for a slow overnite charge , steer clear of powerfull start/chargers there bad for any battery.
lee jcb mecanic, January 2010
