BigBattery ETHOS 20.48kWh 48V Battery System — K0951

Size storage around your essential loads

Use 20.48kWh of nominal DC capacity as part of an installer-designed backup or solar-storage system. Actual AC energy and runtime depend on usable depth of discharge, inverter efficiency, operating conditions and the loads you connect. A compatible inverter is required to power AC appliances.

What this package includes

Four 5.12kWh ETHOS battery modules, one ETHOS control box, one additional ETHOS rack base, one 4.9ft stack-to-stack power cable pair and one 4.9ft stack-to-stack communication cable. The control box includes its own base; module interconnects follow the manufacturer packing and installation documentation.

This is the battery-system package only. Inverter, solar panels, site wiring, grounding conductors, external protection and installation are separate unless expressly identified in the supplied packing list. Check the current manual for interconnections, placement and clearances before installation.

Communication and installation

ETHOS supports CANBus and RS485 communication. Confirm the specific inverter model, communication protocol and firmware before ordering. The manufacturer rates these configurations at up to 250A continuous DC discharge and 200A maximum charging; inverter and system limits may be lower. Installation, permits and any required system certification must be evaluated for the complete equipment combination.

Choosing your configuration

This listing is specifically for K0951: 4 modules and 20.48kWh. For expansion, use compatible ETHOS components and the manufacturer-approved wiring layout. Do not mix battery models or assume another kit includes the same cables.

ETHOS manufacturer specifications · Installation manual and wiring diagrams · Compare battery banks · Size your backup system · Confirm inverter compatibility

Product Data

Technical Specifications

Why Buy From Us

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Ordering Information

Shipping & Returns

Free shipping in the Lower 48: Standard delivery includes residential delivery and liftgate service when needed, with no fuel surcharge or order minimum. We send tracking when available, and the freight carrier contacts you to schedule delivery.

30-day returns: Contact Torven within 30 days of delivery and we will help you get started. See the return policy for item condition and return-shipping details.

Delivery problem? We are here to help. Contact Torven with your order number and photos. We will handle the claim coordination with the supplier and carrier and help arrange a resolution. Return shipping is covered for approved damage, defect or incorrect-item returns.

Manufacturer warranty: BigBattery provides a 12-year limited repair/replacement warranty for eligible new battery purchases and one-year coverage for included accessories. Manufacturer conditions, exclusions and claim procedures apply; return-shipping responsibilities change after the first year. Read the current BigBattery warranty policy.