Ngen Star

The lungs that store power-
and release it when need it

Stackable battery storage for smarter energy independence

Star batteries store the extra solar energy your home produces during the day, so you can use it later — at night, during cloudy weather, or even during a power outage. Instead of sending unused energy back to the grid, you keep it for yourself.

They're smart, stackable, and built to grow with your needs. Whether you want lower energy bills, more independence from the grid, or peace of mind during blackouts.

Key features

Smart storage. Built to scale.

Modular & Scalable

Stack units from S2 to S9 to increase capacity as needed.

Long lifespan

>6000 charge/discharge cycles for lasting performance.

Efficient & safe

90% usable capacity, smart thermal regulation.

Flexible integration

Compatible with Smart Box systems and SG Connect.

Compact design

Saves space with vertical stacking options.

10-year warranty

Reliable support for the long run.

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Power your home with
the future of green energy

Become energy self-sufficient.

Power your home with the future of green energy

The Star S2-S9 series offers flexible, high-efficiency battery storage for homes and businesses. Each unit is modular and stackable, allowing users to expand capacity as their energy needs grow — up to 41.9 kWh per stack.

With a 90% depth of discharge, >6000 cycles, and smart temperature management, these batteries deliver long-term reliability. Compatible with single-phase and three-phase systems (S2 for H1 inverters; S8-S9 only for 4800-type setups), they are the ideal companion to your SG Connect ecosystem.

Compare Star Battery Models

Find the right capacity for your needs

Battery type	Type 4300	Type 4800
Model	Nominal capacity
STAR S2*	8,280 Wh	9,320 Wh
STAR S3	12,420 Wh	13,980 Wh
STAR S4	16,560 Wh	18,640 Wh
STAR S5	20,700 Wh	23,300 Wh

Battery type	Type 4300	Type 4800
Model	Nominal capacity
STAR S6	24,840 Wh	27,960 Wh
STAR S7	28,980 Wh	32,610 Wh
STAR S8	-	37,270 Wh
STAR S9	-	41,930 Wh

* S2 Compatible with 1-phase inverter STAR-H1
** S8 and S9 available only for 4800 system

Engineered for Performance

Cycle life

>6000

Recommend discharge current [A]

Max. Charge/Discharge Current [A]

Depth of discharge (%)

Operating temperature [°C]*

Charging from 0 to 55
Discharging from -10 to 50

Dimensions (WHD) [mm]

570x(350-1352)x380

Warranty

10 years

Battery module types

Master & Slave - how the Star system scales

Model	Battery type	Capacity [WH]	Item number
Master 4300	ESM4300	4150	504627
Slave 4300	ECS4300	4150	504628
Master 4800	ESM4800	4660	504629
Slave 4800	ECS4800	4660	504630

How it works:

Each NGEN Star battery system is built from stackable modules of the same battery type (4300, or 4800 Wh). These modules come in two versions:
MASTER - The main control unit. It manages communication, safety, and operation for the full stack.
SLAVE - Expansion modules. They add storage capacity and operate under the Master's control.
To build any Star system, you need one Master and add as many Slaves as needed — up to the desired capacity.

Ready to get started?

Find a local installer or distibuter —
or reach out and we'll guide you.

Downloads

Ngen Star 4300

Ngen Star 4800