Victron Energy 48V storage system 40.96kWh – 8× Lithium NG 51.2V 100Ah, 2× Lynx Smart BMS NG, Quattro 10kVA or 8kVA or MultiPlus-II 6.5kVAComplete 48V DC system, 40.96kWh, eight 51.2V batteries in two banks

Overview

Eight Lithium NG 51.2V 100Ah batteries in parallel store 40.96kWh in this 48V system for off-grid homes, farms and workshops. They form two banks of four, each behind a Lynx Smart BMS 500 NG, with a Class T fuse per battery and equal cable lengths to the busbars. Each bank alone can supply 400A at 1C, enough for any of the three inverter/charger options at full load: Quattro 48/10000/140-100/100, Quattro 48/8000/110-100/100 or MultiPlus-II 48/6k5/100-50. A Cerbo GX MK2 with GX Touch 70 and an Orion-Tr 48/12-30A complete the system.

• 24V or 48V banks from 10.24kWh to 61.44kWh
• Two independent banks, each with its own Lynx Smart BMS NG
• MultiPlus-II or Quattro inverter/chargers from 5kVA to 3×15kVA
• Class T battery fuses and fused Lynx Distributor outputs
• Cerbo GX MK2 with GX Touch 70 and VRM portal
• Isolated Orion-Tr converter for a 12V circuit

What's in the kit

• 1 × Victron Energy Quattro 48/10000/140-100/100 10kVA version
• 1 × Victron Energy Quattro 48/8000/110-100/100 8kVA version
• 1 × Victron Energy MultiPlus-II 48/6k5/100-50 6.5kVA version
• 8 × Victron Energy LiFePO4 Battery 51.2V/100Ah NG
• 2 × Victron Energy Lynx Smart BMS 500 NG (M10)
• 2 × Victron Energy Lynx Power In (M10)
• 1 × Victron Energy Lynx Distributor (M10)
• 1 × Victron Energy Cerbo GX MK2
• 1 × Victron Energy GX Touch 70
• 1 × Victron Energy Orion-Tr 48/12-30A (360W) Isolated DC-DC converter
• 1 × Cables, Class T and MEGA fuses, communication cables and GX supply parts

How the systems work

Each kit is a complete DC side built from Victron parts. Lithium NG batteries contain LiFePO4 cells, cell balancing and an integrated shunt, and send cell voltages and temperatures over M8 cables to a Lynx Smart BMS NG. The BMS calculates state of charge, pre-charges the inverter capacitors and opens its contactor, rated 500A or 1000A continuous, if a cell leaves its limits. Over VE.Can it reports to a Cerbo GX MK2, which uses DVCC to steer the charge and discharge currents of the inverter/charger.

For 24V the kits parallel 25.6V batteries; for 48V they parallel 51.2V batteries or use strings of two 25.6V batteries in series, the maximum Victron allows, with identical capacity. Every kit splits its batteries into two banks, each behind its own Lynx Smart BMS NG, using Victron's parallel redundancy feature: if one BMS disconnects its bank, the other keeps the system running, within the current that bank can deliver.

Inverter/chargers and distribution

Depending on the kit, the AC side is a MultiPlus-II 24/5000/120-50 or 48/6k5/100-50 with one AC input, or a Quattro with two AC inputs for grid and generator, from 24/5000 to 48/15000; three Quattro 48/15000 units form a three-phase system. Batteries connect through Class T fuses and the inverter through MEGA fuses on Lynx Distributor busbars, whose fuses the BMS monitors. An isolated Orion-Tr DC-DC converter supplies a 12V circuit with up to 30A.

What the installer adds

Solar chargers and panels, the AC distribution with breakers and residual current devices, battery racks or brackets, earthing and commissioning are not part of the kits. Lithium NG batteries are IP65, but the BMS stops charging below 5°C, so winter charging needs a frost-free room. Cable sections and fuse ratings are chosen for a compact layout with batteries, Lynx busbars and inverter close together; longer runs need new calculations. Grid-parallel ESS operation requires the certificates and settings of the destination country.

Questions and answers