5kWh Solar Backup: Discover Energy 48V LiFePO4 Battery + Phocos PSW-H-6.5KW-120/48V 6.5kW Hybrid Inverter - ESS Kit

This kit includes the primary components listed below. Additional wiring, mounting hardware, or balance-of-system equipment may be required depending on your installation requirements. Contact our team for a personalized equipment review and custom add-on pricing.

The 5kWh Solar Backup ESS Kit combines the Discover Energy 48-48-5120-H AES Rackmount LiFePO4 battery, the Phocos PSW-H-6.5KW-120/48V 6.5kW hybrid inverter, and a factory-matched cable set into a complete solar battery backup system for home and residential off-grid installations. Every component is pre-selected for electrical compatibility — eliminating the hours of datasheet cross-referencing that comes with building a system from individual parts.

What's included

• Discover Energy 48-48-5120-H — 5.12 kWh, 51.2V, 100 Ah LiFePO4 AES Rackmount battery; 19-inch 3U rackmount form factor; GEN-4 BMS with LYNK port
• Phocos PSW-H-6.5KW-120/48V — 6,500W single-phase hybrid inverter/charger; 120Vac pure sine wave output; dual integrated MPPT solar charge controllers
• Discover Energy 950-0070 — AES Rackmount ESS battery cable set with terminal connectors; pre-assembled for this battery-inverter combination

Component specifications

One purchase, no sourcing overhead

Building a home solar battery storage system independently means confirming that battery voltage, charge rate tolerances, cable ampacity, and inverter charge settings all align — typically requiring hours of datasheet review and vendor back-and-forth. This kit removes that burden: the Discover 48V LiFePO4 battery, Phocos 6.5kW inverter, and interconnect cable set are bundled because they are confirmed as electrically compatible, with charge parameters configured at commissioning using Discover's published voltage thresholds for the Phocos inverter's lithium battery profile.

Who this kit is for

• Whole-home backup for small to mid-size homes — 6.5kW of continuous inverter output supports essential loads including refrigeration, lighting, fans, and multiple small appliances simultaneously during grid outages.
• Tesla Powerwall alternative seekers — buyers who want a UL-certified LiFePO4 battery with a 10-year warranty and 100% usable capacity, without proprietary ecosystem lock-in or installer-only configuration.
• Residential off-grid solar installations — appropriately sized for cabins, ADUs, and smaller homes pairing a 3–10kW PV array with local storage for around-the-clock energy independence.
• Emergency preparedness — the 10ms inverter transfer time (UPS mode) and 5.12 kWh of fully usable storage sustain critical loads through extended outages without a generator.
• Multi-battery system starting point — the LYNK port and parallel scaling capability (up to 184 kWh per gateway) make this kit a practical first module in a larger whole-home battery backup system.

How the components connect

The Discover 48-48-5120-H battery connects to the Phocos PSW-H-6.5KW-120/48V inverter via the included 950-0070 cable set using Amphenol SurLok Plus terminals. The Phocos inverter manages PV charging across its dual MPPT inputs (up to 120A combined), grid or generator charging (up to 120A), and AC load output simultaneously. The battery's GEN-4 BMS communicates state of charge, temperature, and cell balance data over the LYNK port; the Phocos inverter's CAN Bus and RS-485 interfaces enable charge coordination when paired with Discover's optional LYNK II Gateway.

Items you will likely need to complete the installation: a DC breaker or fuse between battery and inverter, an AC load center or breaker panel, PV array with appropriate string wiring, conduit, and an optional rackmount enclosure such as the Discover AES Slimline. Contact the A1 SolarStore team for a personalized balance-of-system checklist.

Why choose this solar ESS kit?

Sourcing a 6.5kW inverter and a 5kWh LiFePO4 battery independently typically means verifying communication protocol compatibility, matching charge parameters, and sizing interconnect cables — all before a single wire is run. This kit bundles components that are factory-confirmed compatible, backed by a 10-year Discover battery warranty and dual UL certifications across both main units. The Phocos PSW-H-6.5KW-120/48V adds meaningful headroom over 5kW alternatives: dual MPPT inputs accept up to 10,000Wp of PV, a 120A solar charge current is 50% higher than comparable 5kW inverters, and the 13,000VA peak surge handles motor-start loads without derating. For homeowners comparing residential solar battery backup systems or evaluating off-grid storage options, this kit offers a credentialed, pre-engineered path to installation without the research overhead of assembling a system from scratch.