Schematic Wiring Diagrams

Yes — three levels. Schematic Wiring Diagrams: professionally drawn schematics for each pack and common layouts. System Design service: we design the whole system to your loads and space. Done-4-You Plug & Play Boards: your components mounted and wired on 17mm structural ply (hex-faced or slip-reduced finish) with routered edges for a clean install — built to your custom design and dimensions, so it drops straight onto your van wall or boat bulkhead. Victron also publishes free example schematics: https://www.victronenergy.com/support-and-downloads/systems

No. The MultiPlus-II must be installed with correctly sized DC cabling and fusing, AC input/output protection, and it must be programmed to suit your battery type and system before use. Programming requires either a Cerbo GX or an MK3-USB interface. If you'd rather skip that step, add our Custom Programming Upgrade at checkout and your unit arrives pre-programmed to your battery specifications.

Follow the power, because current is what sets cable size and cost: watts / volts = amps, so the same 3,000W load pulls 250A at 12V but only 62A at 48V. Victron's own guideline (Wiring Unlimited): 12V suits inverters up to 3,000VA, 24V up to 5,000VA, and 48V for 5,000VA and up. So: 12V — vans, boats and small setups. 24V — mid-size systems. 48V — big inverter loads and all whole-home off-grid: quarter the current of 12V, much thinner cable, higher efficiency, and the best range of storage batteries. If you're planning big inverter loads (aircon, workshop tools, whole house), start at 48V — it's cheaper than upgrading later.

While we are confident in the advice and information provided, all electrical products must be installed by a licensed electrician or suitably qualified person, in accordance with the manufacturer's instructions and applicable Australian standards.

Every pack pairs a Victron inverter/charger with a professionally matched lithium bank, sized as a set so you never buy mismatched parts: choose your battery family (Energy Eco lithium, Energy Eco Semi-Solid State, Fusion Lithium, or Pylontech) and your size — 12V packs from 2000VA/270Ah up to 3000VA/480Ah, 24V packs to 5kVA/400Ah, 48V packs from 3kVA/5kWh up to 10kVA/20.48kWh. Each pack page lists its exact contents, and a matching professionally drawn wiring diagram is available for every pack. Adding later is designed in: solar bolts on with an MPPT sized to your roof space, and batteries expand within each range's approved parallel limits — the EE48-5.12 goes all the way to 16 modules on its rack system. Because every pack is built on the same Victron architecture, expansion uses standard parts, never replacements.

Yes — three in-house install teams: Motion Plus Marine (marine electronics and electrical systems), Motion Plus Solar (off-grid and solar systems), and Motion Plus Electrical (electrical installations). Based in the Port Stephens, Newcastle and Lake Macquarie region, with installs available within our service area along the east coast. Outside our service area, we supply the system pre-wired and programmed for your own qualified electrician to install. Tell us what you're planning and we'll quote supply and install together.

First principles: series increases voltage, parallel increases capacity — and beyond that, the battery's BMS decides, so this is per-model, not a general yes. Universal rules first: only ever combine identical batteries — same model, same capacity, same age, and charge them to the same voltage before connecting. The approved limits per Energy Eco model: EE12-135-BT and EE12-240-BT — up to 6 in parallel AND up to 4 in series, so you can build 12V, 24V, 36V or 48V banks from either. EE48-5.12KWH battery — up to 16 in parallel (81.9kWh of storage), series NOT supported: it is a 48V building block, you add capacity sideways, never stack voltage. Fusion Lithium V-LFP-12-100: up to 4 in series and up to 20 in parallel — one of the most flexible BMSs on the market (check each model's own sheet, limits can vary across the range). Tell us your target voltage and capacity and we'll confirm the combination before you buy.