JOINT | R-ESS Series

All-in-One Residential Energy Storage Systems

JOINT’s home energy storage system (R-ESS) is a high-power home energy storage system designed for whole-home backup and solar self-consumption.
It stores excess solar energy during the day and supplies stable power to your home at night or during grid outages.
With up to 12 kW output, modular LFP batteries, and seamless backup switching, it keeps your home running just like normal, even when the grid goes down.

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RG series-Residential Energy Storage Systems
Up to

4.6 kWh

Usable Capacity

Up to

8

Modules Connection

Up to

26.1 A

Grid AC Output Current

Up to

100%

Depth of Discharge

Whole-Home Power Capability

Up to 12 kW output to power air conditioners, ovens, and other high-load appliances.

Rremium tier 1 battery cells

High Performance and Safety

Solar-Optimized Energy Storage

proactive and passive safety mechanisms

afci tECHNOLOGY

instant Protection, Enhanced Safety.

24/7 Clean Energy for the Whole Home

Smarter, Cleaner, More Reliable

Safe, Quiet & Durable

Safer LFP battery technology with longer lifespan and higher thermal stability.

Cloud monitoring

Real-Time Visualization, Anytime, Anywhere

Product Specifications at a Glance

Number of MPPT Trackers

2

Number of MPPT Trackers

2

Backup Switching Time

10 ms

Battery Type

LFP (LiFePO₄)

Battery Type

LFP (LiFePO₄)

Nominal Battery Voltage

51.2 V

Max. PV Input Voltage

1000 V

Max. PV Input Voltage

1000 V

Max. PV Array Power

16 kW / 20 kW / 22 kW

Max. AC Continuous Output Power

8000 W / 10000 W / 12000 W

Max. AC Continuous Output Power

8000 W / 10000 W / 12000 W

Battery Capacity (Expandable)

100/200/300/400/500/600/700/800 Ah

Max. Efficiency

97.2%

Max. Efficiency

97.2%

Protection Rating

IP65

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