Models SuperStart520, 620 and 1020 all feature a fast-charge timer device to enable rapid battery recovery with a reduced risk of boiling the battery. Fast-charge facility allows the maximum charge output to be utilised for up to one hour after which it is automatically cut off. All SuperStart models are fitted with a heavy-duty transformer, flush mounted ammeter and variable charge rate controls. The SuperStart1020 requires a 3-phase supply and features a remote start facility which is particularly useful when working on commercial vehicles.