Altec M-Power 140 Amp Split Charge Relay VSRAltec M Power 140 Amp Split Charge Relay VSR If you are fitting a leisure battery into a boat, which is to be charged by the van's alternator, you will need a split charge system. For vehicles that do not have stop start regenerative systems, this Altec 140 amp VSR is the ideal solution. If you have a modern van with the stop start regenerative systems, you will need an intelligent DC DC charger. The Altec M Power VSR is simply wired between the main