5.5kW All in One Hybrid Inverter & 5kWh Lithium Battery | Voltacon

The Voltacon 5.5kW home energy storage system packs a hybrid inverter, 5kWh lithium-ion battery bank and AC charger into one compact metallic cabinet. It's G98/G99 compliant and ENA registered, built for grid-tied UK homes that want self-consumption, backup power or off-peak tariff charging. Solar panels help but aren't required to run the system.

Key features of this home battery storage system

• Hybrid inverter, 5.5kW with integrated solar charger and AC charger up to 100A
• Battery capacity, 5kWh lithium-ion, expandable up to 50kWh
• Compliance, G98/G99 compliant and ENA certified for UK grid connection
• Cycle life, over 8,000 battery cycles
• Surge discharge, up to 3C
• Enclosure rating, IP20, indoor installation only

How it works

Surplus solar generation charges the battery first, with any excess exported to the grid if configured. Without panels fitted, the system can charge overnight on an off-peak tariff and discharge during peak hours, cutting electricity costs even before any PV is added. Panels can be connected later to boost self-sufficiency further.

It runs in grid-tie, off-grid, or grid-tie with backup mode, with supply priority set to PV, battery or grid as needed. A built-in timer handles scheduled charging and discharging, and real-time monitoring software is included alongside USB, RS232, Modbus, SNMP, GPRS and Wi-Fi communication interfaces.

Panel compatibility

Compatible with monocrystalline and polycrystalline PV modules only. Do not connect other array types, and never earth either terminal of the solar array.

Applications

• Residential grid-tied solar self-consumption
• Off-peak charging with peak-hour discharge
• Home backup power during grid outages
• Properties with or without existing solar PV

Installation notes

Fitting must be carried out by a qualified electrician or MCS-accredited solar installer, with G98 or G99 notification and DNO approval secured before grid connection. AC wiring, battery connections, DC fusing and earthing must follow IET Wiring Regulations. IP20 rated for indoor use only, so this is not a DIY job.