Will the MiniBoost work if I have several batteries installed in parallel? Setec Customer Support December 13, 2021 05:34 The MiniBoost is capable of charging multiple batteries installed in parallel. Related articles Can I use the MiniBoost if I don't have a J35 or a BatteryPlus35? I want to install MiniBoost in the back of my four-wheel drive, not under the bonnet. Will this work? What are the main benefits of the MiniBoost's reverse voltage, short-circuit and reverse connection protection? Where do I install the MiniBoost relay? Do I need an auto electrician to install this?