GRANKIA AIO-7K16LV-US is a 7kW split-phase solar storage battery system for residential applications. It combines a 7.2kW split-phase inverter, a 16kWh LiFePO4 battery pack, and solar management electronics in one cabinet.
The solar storage battery system delivers 120V/240V split-phase output, 10.8kW surge capacity for motor startup, and cycle life rated at 8,000 cycles at 80% depth of discharge. It supports backup power, solar self-consumption, peak load shifting, and off-grid operation.
Energy Storage for US Residential Applications
The global transition toward renewable energy continues.
Homeowners encounter these conditions:
- Unstable grid supply.
- Rising electricity costs.
- Limited solar utilization during daytime.
- Increasing demand for backup power.
A conventional solar system generates electricity only when sunlight hits the solar panels.
A complete energy configuration requires storage, control logic, and power conversion.
The AIO-7K16LV-US solar storage battery system combines solar generation, battery storage, and backup switching in one platform.
Homeowners store solar energy during daylight and discharge it when grid prices rise or utility power fails.
Why Integration Matters for Residential Storage
Traditional solar installations usually require multiple independent components:
- Solar inverter.
- Battery cabinet.
- Battery management system.
- Solar charge controller.
- Communication gateway.
- Protection devices.
This increases:
- Installation complexity.
- Wiring requirements.
- Maintenance costs.
- System footprint.
The AIO-7K16LV-US changes this approach.
It integrates:
| Component | Function | Benefit |
| Hybrid inverter | Converts DC solar/battery power into AC electricity | Reliable household power supply |
| LiFePO4 battery | Stores renewable energy | Long service life and high safety |
| Dual MPPT charger | Optimizes solar harvesting | Higher energy yield |
| BMS system | Battery monitoring and protection | Improved battery reliability |
| Communication module | Remote monitoring | Smart energy management |
This integrated design functions as all in one solar battery storage system for home backup.
Core Technical Architecture
The AIO-7K16LV-US is built around three major energy flows.
Solar Energy Flow
During daylight:
Solar Panels → Dual MPPT Controller → Battery / Home Loads
The system supports:
- Maximum PV array power: 9.0kW
- Two independent MPPT trackers
- Maximum PV open circuit voltage: 500VDC
- MPPT operating range: 90VDC – 450VDC
Dual MPPT technology allows different rooftop orientations or multiple solar strings to operate efficiently.
For example:
- East-facing solar panels.
- West-facing solar panels.
Each array can be optimized independently.
Battery Energy Flow
The integrated battery uses LiFePO4 chemistry.
Compared with traditional lead-acid batteries, lithium iron phosphate technology provides:
- Higher cycle life.
- Better thermal stability.
- Higher usable energy capacity.
- Lower maintenance requirements.
Battery specifications:
| Parameter | Specification |
| Battery Chemistry | LiFePO4 |
| Nominal Energy | 16kWh |
| Battery Voltage | 51.2VDC |
| Rated Capacity | 314Ah |
| Cell Configuration | 16S1P |
| Cycle Life | ≥8000 cycles @ 80% DoD |
| Battery Voltage Range | 40-58.4VDC |
AC Power Output
The AIO-7K16LV-US supports both single phase and split phase applications.
For US residential applications, split phase output is especially important because many household appliances require 240V power.
Supported output:
- 120VAC single phase.
- 240VAC split phase.
- Automatic voltage recognition.
- Pure sine wave output.
This makes it suitable for:
- Refrigerators.
- HVAC systems.
- Water pumps.
- Home appliances.
- Emergency circuits.
Key Features and Benefits
Native Split-Phase Output (120/240VAC)
Rated 6.0kW single-phase / 7.2kW split-phase. Outputs 120VAC between L1-N and L2-N, and 240VAC between L1-L2. Auto-recognition eliminates external transformers or phase-stacking hardware.
One cabinet backs up the entire panel — not just a sub-panel. Installers reduce wiring time and material costs.
16kWh LiFePO4 Battery with 8,000+ Cycle Life
51.2VDC nominal battery, 16S1P cell configuration, 314Ah rated capacity, rated for ≥8,000 cycles at 80% depth of discharge.
LiFePO4 chemistry avoids the thermal runaway risk profile of NMC cells and tolerates deep, daily discharge cycles far better than lead-acid or older lithium formats.
At one full cycle per day, 8,000 cycles projects to roughly 20+ years of usable service — a battery lifespan that outlasts most residential solar loan or lease terms, and one of the reasons this solar storage battery system is positioned as a long-term asset rather than a consumable component.
Dual MPPT Solar Charging
Two trackers, each 16A, support up to 4.5kW per string (9.0kW total). Operating voltage: 90–450VDC; max open-circuit: 500VDC.
Two trackers permit east/west roof orientations without mismatch losses. A single-MPPT system would lose 5–15% under mixed orientation; dual MPPT recovers that yield.
High Round-Trip Efficiency
>94% peak PV-to-inverter efficiency and >91% peak battery-to-inverter efficiency.
Less energy is lost converting sunlight to storage and storage to usable AC power, compared to systems in the high-80% to low-90% range.
Over a multi-year ownership period, higher conversion efficiency measurably increases the effective kWh delivered per kWh of installed capacity — improving the payback economics of the entire solar storage battery system.
Fast Backup Power Switching
10ms transfer time for PC/electronic loads, 20ms for standard home appliances.
Falls well within the ride-through window of most UPS-sensitive electronics and doesn’t cause visible flicker or resets on typical household appliances.
Sensitive electronic equipment receives stable backup power.
Integrated Monitoring and Wide Protection Set
LCD + LEDs, app/web monitoring, RS232, CAN, Bluetooth, WiFi, and comprehensive protections.
Higher reliability and easier fleet management for installers and operators.
Technical Specifications
| Category | Specification |
| Model | AIO-7K16LV-US |
| System Type | Split Phase Solar Storage Battery System |
| Rated Output Power | 7.2kW Split Phase |
| Single Phase Output | 6.0kW |
| Rated AC Output Voltage | 120VAC (L1-N / L2-N) / 240VAC (L1-L2) |
| Battery Capacity | 16kWh |
| Battery Type | LiFePO4 |
| Maximum PV Array Power | 9.0kW |
| MPPT Trackers | 2 × 16A |
| Max. Solar Charge Current | 150A |
| Max. AC Charge Current | 120A |
| Surge Power | 10.8kW |
| Output Waveform | Pure Sine Wave |
| Installation | Floor Mounted |
| Protection Rating | IP20 Indoor |
Split-Phase Power Conversion for North America
The AIO-7K16LV-US matches North American residential electrical standards.
Unlike standard single-phase battery systems, this solar storage battery system supports split phase output with automatic voltage recognition.
It can provide:
- 120VAC output for common household circuits.
- 240VAC output for high-power appliances.
- Stable pure sine wave electricity.
- High surge capability for motor-driven equipment.
The inverter architecture enables smooth power conversion between:
PV DC Power → Battery DC Storage → AC Household Power
This ensures continuous energy availability regardless of solar conditions.
Intelligent Battery Management System (BMS)
The integrated BMS continuously monitors battery conditions.
Protection functions include:
- Overcharge protection.
- Over-discharge protection.
- Over-temperature protection.
- Over-current protection.
- Short circuit protection.
- Voltage monitoring.
Battery operating parameters:
| Parameter | Value |
| Battery Voltage | 51.2VDC |
| Charging Cut-off Voltage | 58.4VDC |
| Discharging Cut-off Voltage | 43.2VDC |
| Operating Temperature | -20°C to 50°C |
| Cycle Life | ≥8000 cycles |
The BMS improves system safety and extends battery service life.
Smart Monitoring and Communication
Modern energy storage requires intelligent management.
The AIO-7K16LV-US supports:
- WiFi monitoring.
- Bluetooth connection.
- CAN communication with BMS.
- RS232 inverter communication.
- Mobile APP monitoring.
- Web portal monitoring.
Users can check:
- Solar production.
- Battery SOC.
- Charging status.
- Energy consumption.
- Historical performance.
This creates a connected residential energy ecosystem.
Application
Residential Solar Backup
The primary application is home energy storage.
Typical configuration:
Solar Panels + AIO-7K16LV-US + Household Loads
Suitable for:
- Single-family houses.
- Villas.
- Remote homes.
- Areas with unstable grid supply.
The 16kWh battery capacity can support essential household loads during outages.
Off-Grid Solar Power System
For locations without reliable electricity infrastructure, the system can operate independently.
A typical off-grid configuration includes:
- PV modules.
- AIO-7K16LV-US.
- Backup generator.
- Residential loads.
The generator compatibility function provides additional energy security.
This makes it suitable for:
7kW off grid solar battery system for remote homes
Peak Shaving and Electricity Cost Optimization
Electricity prices are increasing in many regions.
The system can store solar energy during low-demand periods.
Energy can then be used during:
- Evening peak hours.
- High electricity price periods.
- Grid shortage events.
This improves solar self-consumption and reduces grid dependence.
AIO-7K16LV-US Compared With Traditional Solar Systems
| Feature | Traditional Solar System | AIO-7K16LV-US |
| Inverter | Separate device | Integrated |
| Battery | External installation | Built-in LiFePO4 |
| MPPT Charger | Additional equipment | Integrated dual MPPT |
| Backup Function | Requires extra hardware | Built-in |
| Installation | Complex wiring | Simplified installation |
| Monitoring | Multiple platforms | Unified APP/Web monitoring |
Technical Advantages for US Residential Energy Storage
The US residential market requires specific electrical compatibility.
The AIO-7K16LV-US supports:
| Requirement | System Capability |
| Split Phase Output | 120V/240V |
| Frequency Compatibility | 50Hz/60Hz Auto Detection |
| Pure Sine Wave | Supported |
| Generator Integration | Supported |
| Backup Switching | 10-20ms |
| Indoor Installation | IP20 Rated |
These specifications make it suitable for North American residential energy applications.
