ZT-REES-LV-ST-16k Residential Energy Storage System Low-Voltage | Stackable | 16kWh The ZTTEK Hearth LV-16k-ST is a modular, stackable low-voltage LFP energy storage system delivering 16 kWh per unit with high-capacity 314 Ah cells. Designed for retrofit solar installations using microinverters or PV inverters, the system combines tool-free stacking, quick-plug connectors, and flexible parallel expansion — suitable for homes, small commercial sites, farms, and workshops. This ESS scales to 256 kWh via DC combiner architecture.

Retrofit-Friendly PV Integration

Designed for straightforward integration with microinverter and PV inverter systems.
- RS485 / CAN communication interfaces
- Compatible with mainstream microinverters and PV inverters via software matching
- Quick-plug connectors reduce installation time and on-site complexity
- No dedicated high-voltage wiring or specialist tools required

High-Density 314Ah LFP Cells

Large-cell LFP chemistry for extended cycle life and stable performance over the system lifetime.
- Cell capacity: 314 Ah; rated energy: 16 kWh per unit
- Cycle life: ≥6,000 cycles @ 80% DoD
- Natural convection cooling — no active cooling maintenance required
- Charge temperature: 0°C to 55°C; discharge: -20°C to 55°C

Flexible Parallel Expansion

Designed to grow with project requirements — from single-home backup to commercial-scale ESS.
- Fast expansion with 2 parallel units; up to 16 units total via DC combiner
- Max. expandable capacity: 256 kWh
- Supports both residential and light C&I applications on a single platform
- Phased investment supported — add units without replacing existing hardware

High Power Output for Heavy Loads

Continuous and peak discharge capability to handle demanding residential and commercial loads.
- Continuous charge/discharge: 120 A
- Peak discharge: 205 A — handles motor startup surges and commercial equipment
- Suitable for refrigeration units, water pumps, machinery workshops, and small factories

Safe Outdoor-Ready Design

Multi-layer protection for reliable operation in both indoor and outdoor environments.
- IP65 enclosure rating for outdoor deployment
- BMS protection: over-voltage, under-voltage, over-current, over-temperature
- Breaker over-current and magnetic-trip protection within combiner architecture
- Relative humidity: 5–95%; altitude: <3000 m

Open Smart Energy Management

Compatible with intelligent scheduling, third-party EMS, and grid flexibility programs.
- RS485 / CAN communication interfaces
- Works with ZTTEK smart gateway for load management and energy scheduling
- Supports third-party EMS integration
- Suitable for VPP participation, demand-side flexibility, and smart building projects

Applications

Solar Retrofit

Add battery storage to existing PV systems using microinverters or PV inverters without rewiring.

Time-of-Use Optimization

Charge at low-tariff periods and discharge during peak price windows to reduce electricity bills.

VPP & Demand Response

Participate in virtual power plant programs and grid flexibility markets.

Smart Building Integration

Connect to building EMS for automated scheduling and energy reporting.

Datasheet

ZT-REES-LV-ST-16k Stackable.pdf