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SunWell Energy

8200W 16kWh All-in-One ESS

8200W 16kWh All-in-One ESS

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Model

Designed for homes and small businesses needing backup and solar self-use, the 8200W 16kWh All-in-One ESS packs LiFePO4 storage into an all-in-one enclosure. Owners use it to ride through outages and shift solar or grid energy into the evening peak. It works with mainstream hybrid inverters and grows from a single unit to a bigger bank.

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8200W 16kWh All-in-One ESS — Technical Specifications
MODELSW-MA8K16LV
Rated Power8200VA/8200W
Rated Capacity16kWh
INPUT
Nominal Voltage230Vac(Settable)
Selectable Voltage Range170-280Vac(UPS) / 90-280Vac(Appliances)
Nominal Input Frequency50/60Hz(Auto Sensing)
OUTPUT
Nominal Voltage230Vac(Settable)
Surge Power16400VA
Frequency50/60Hz
Peak Efficiency96%(PV to INV)
Peak Efficiency93%(Battery to INV)
Transfer Time10ms(UPS) / 20ms(Appliances)
WaveformPure Sine Wave
Overload Protection60s@105%~110% Load / 10s@110%~140% Load / 5s@≥140% Load
BATTERY
Battery TypeLiFePO4
Battery Voltage51.2Vdc
Rated Capacity314Ah
Battery Voltage Range40~58.4Vdc
Max. Battery Discharge Current157A
SOLAR CHARGER & AC CHARGER
Solar Charger TypeMPPT
Max. PV Array Power13000W(6500W×2)
Max. PV Array Open Circuit Voltage500Vdc
MPPT Operating Voltage Range60~450Vdc
Max. PV Input Current27A×2
Max. Solar Charge Current140A
Max. AC Charge Current120A
Max. Charge Current(PV+AC)140A
PHYSICAL
Product Dimension (W×D×H)310×700×1100mm
Package Dimension(L×W×H)795×400×1260mm
Net Weight130kg
CommunicationRS232(Inverter)/CAN(BMS)/Bluetooth/WiFi
Lithium Battery ActivationYES(By PV or Utility)
OPERATING ENVIRONMENT
Operating TemperatureCharge: 0°C to 50°C / Discharge: -20°C to 50°C
Storage Temperature0 to 35°C (Storage: 6 months @ SOC 20%-50%) / -15 to 0°C, 35 to 45°C (Storage: 1 month @ SOC 20%-50%)
Humidity10%~85% Relative Humidity(Non-condensing)

Features

  • All-in-one architecture integrates battery, inverter and management. The system combines storage, a hybrid inverter and MPPT in one enclosure, cutting installer time and wiring.
  • Built-in inverter and MPPT handle solar, grid and backup. It harvests PV, powers loads and switches to battery backup within moments of an outage, with no manual action.
  • Intelligent EMS optimizes self-consumption and savings. The system routes power between solar, battery, grid and load in real time, enabling time-of-use scheduling and peak shaving.
  • Real-time monitoring keeps status visible. Through the unit display communication you can check state-of-charge, power flow and faults on site or remotely.
  • Safe LiFePO4 chemistry with multi-layer protection. Inherently stable cells plus system safeguards monitor over-voltage, over-current and temperature during daily operation.
  • Scalable storage expands as demand grows. Add battery modules or parallel units to increase capacity, protecting your initial investment as needs rise.

Applications

  • Whole-Home Backup: Keeps lights, refrigeration, Wi-Fi, and a well pump running through outages as part of a managed essential-load system.
  • Daily Solar Self-Consumption: Stores midday PV in the 16kWh LiFePO4 pack and discharges it in the evening to cut grid purchases.
  • Off-Grid & Remote Homes: Supplies independent power for cabins and outbuildings away from the grid when paired with sufficient PV.
  • Home Office & Sensitive Electronics: Pure-sine-wave 230Vac output protects computers, routers, and medical devices from switching glitches.
  • Peak Load Support: The high surge rating starts motor-driven appliances such as pumps and compressors without tripping.
  • Future Capacity Expansion: Parallel/concurrent operation lets you add cabinets later as household demand rises.

Energy Management & System Architecture

The SW-MA8K16LV manages energy through an integrated architecture pairing a built-in MPPT solar charger, a pure-sine-wave inverter, and a 51.2Vdc LiFePO4 battery in one cabinet. PV generation feeds the dual MPPT, which accepts up to 13000W across a 60–450Vdc range and converts it to charge the 314Ah battery or supply the load. A 5-inch color LCD displays live energy flow between PV, battery, grid, and load so users see system behavior in real time.

Battery storage delivers 8200W continuous and 16400VA surge through the inverter/PCS at 96% PV-to-inverter and 93% battery-to-inverter efficiency. Intelligent control handles charging from PV or utility (lithium activation by PV or utility) and load management via selectable input ranges, while RS232, CAN, Bluetooth, and WiFi links report status and support coordinated parallel operation.

Grid, Backup & System Integration

The system works as a grid-connected backup center, delivering 230Vac output with a 10ms(UPS)/20ms(Appliances) transfer that keeps essential loads running through outages. Solar self-consumption is built in: the inverter directs daytime PV to power the home and charge the battery first, managing flow between PV, storage, and load to cut utility draw.

Backup energy comes from the 16kWh LiFePO4 bank, rechargeable from PV or the grid, while the selectable 170–280Vac(UPS)/90–280Vac(Appliances) input rides through unstable supplies. Scalability comes via parallel/concurrent operation, letting multiple cabinets combine for more power and capacity, and RS232/CAN/Bluetooth/WiFi links enable monitoring and home energy-management integration.

Warranty

LiFePO4 batteries for 5 years, hybrid inverters for 2 years, and solar panels under the supplier policy of a 10-year product warranty plus 30-year linear power warranty. If you experience any quality issues within the applicable warranty period, please contact us and we will arrange a replacement or repair promptly.

Frequently Asked Questions

Will the SW-MA8K16LV work with the solar panels I already have?

Yes. The dual MPPT accepts up to 13000W of PV across a 60–450Vdc range with a 500Vdc open-circuit limit, so larger residential arrays connect via MC4. Keep your string voltage inside the MPPT window.

How long can it keep my home running during an outage?

With 16kWh of LiFePO4 and 8200W continuous output, it runs a fuller set of essentials—fridge, lighting, Wi-Fi, a well pump, even a small AC—for many hours by load, and the 16400VA surge starts motor appliances.

Can I charge it directly from solar without the grid?

Yes. The integrated MPPT charges the battery directly from PV, and lithium activation by PV or utility lets the system self-start and charge without grid, supporting off-grid and backup use.

Can I add more capacity as my needs grow?

Yes. It supports parallel/concurrent operation, so you can add more all-in-one cabinets to raise both power and energy as demand grows.

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We typically respond to all inquiries within 24 hours during business days.

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