This handy and economic 6 volt or 12 volt AC adapter is a non-floating charger used for 6 volt or 12 volt Sealed Lead Acid (SLA) batteries. 500 ma output, 120v/60hz input (standard US 110v 2-prong outlet).
IMPORTANT: This is a non-floating charger, meaning you cannot leave the battery connected all the time because it will overcharge and damage the battery (possibly creating a fire hazard).