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48V300Ah Off-Grid 12kW 16kWh All in one ESS

12kW 16.07kWh Off-Grid All IN ONE Energy Storage System 51.2V 314Ah – Dual MPPT, UPS/Generator Modes

Power heavy loads with this 12kW continuous output off‑grid inverter paired with a 51.2V 314Ah LiFePO4 battery (16.07kWh). Dual MPPT channels (single channel 27A/9000W) support up to 15000W solar input, ideal for large residential or small commercial systems. Unique UPS + generator dual mode automatically switches to battery within 10ms (UPS mode) or integrates with a backup generator for extended runtime. 94% PV charging efficiency is still highly effective for most climates. Built-in WiFi BMS offers remote monitoring, battery balancing, and fault alerts. 6000 cycle life ensures >10 years of daily use. Perfect for unreliable grid areas or off-grid farms. B2B quotes for pallet and container orders.

Battery Manage System
Overcurrent Protection
Over-discharge Protection
Low power Protection
High-Low Temp Protection
Overload Protection
Short circuit Protection
Disconnection Protection
Get an up-to-date quote with additional free information to download!

Key Highlights

  • 12kW continuous inverter (24kVA peak): powers central AC, electric range, well pump, and workshop equipment simultaneously without brownouts.
  • Dual independent MPPT trackers (15,000W total PV input): connect two solar arrays with different orientations or shading – harvest up to 30% more daily energy.
  • Selectable backup modes – UPS (10ms) or Generator (20ms): protect sensitive electronics with fast transfer, or delay connection for stable generator sync.
  • 99.9% MPPT tracking efficiency + 94% PV charging efficiency: excellent conversion for large arrays while maintaining cost‑effective solar harvesting.
  • Ultra‑wide MPPT voltage range (60–450Vdc, 500Vdc max): works with lower string voltages – ideal for rooftops with limited panel counts.
  • 160A maximum charging current (PV + AC): fully recharges the 16.07kWh battery in under 1 hour under ideal sun and grid/generator input.
  • 16.07kWh LiFePO₄ battery (314Ah, 6000 cycles): high‑power density perfectly matched to a 12kW inverter – no bottleneck during peak loads.
  • Built‑in WiFi, CAN, RS485 with LCD touch screen: remote monitoring via white‑label app, plus local control for installers and system integrators.
Refrigeration machine backup power battery

Off-Grid & Hybrid Solar Operation

Want to go off-grid? It’s simple:
LOADING...
GRID STABLE
LOAD CONTROL
Supports simultaneous charging and discharging, maximizing solar self-consumption and energy independence.

Battery Management System (BMS) Protection

Designed for stable operation and long service life, the advanced BMS includes:
BMS
  • Overcurrent Protection
  • Over-discharge Protection
  • Low Power Protection
  • High / Low Temperature Protection
  • Overload Protection
  • Short-Circuit Protection
  • Automatic Disconnection Protection
This safety architecture is important for off-grid use, frequent cycling, and real-world installer scenarios.

Core Advantages

Quick Installation

Integrated “battery + inverter + MPPT” design reduces wiring complexity and technician time.

Smart Battery Management System

Built-in BMS with stable protection logic for real household usage and frequent cycling.

High Cycle Life

Premium LiFePO4 cell platform supports 6,000+ cycles class for long service life.

Advanced Structure

Optimized internal layout improves energy density and reliability in a compact cabinet.

Deep Customization (OEM/ODM)

Factory-direct customization with complimentary design support for global partners.

99.99% Device Compatibility

Designed to integrate smoothly with common home energy and solar ecosystems.

Applications

Large Homes with Split Solar Arrays & Heavy Loads

Homes with east/west roof faces or partial shading lose significant energy with a single MPPT. This system’s dual trackers independently optimize each string – you gain morning and afternoon generation that single‑tracker systems miss. The 12kW inverter runs everything from a 5‑ton AC to an induction cooktop. Distributors serving premium residential markets can pitch: “No wasted roof space, no generator needed for most outages.”

Off-grid solar generators in remote workshops

Rural Workshops & Small Manufacturing

Auto repair shops, woodworking shops, and light manufacturing rely on large motors (compressors, saws, welders). This unit’s 24kVA surge handles locked‑rotor currents without tripping. The generator mode (20ms delay) allows a diesel generator to start and stabilize before transfer, preventing voltage sags that damage sensitive controllers. For OEM customers, we offer dry contact outputs for auto generator start.

Off‑Grid Telecom & Remote Clinics with Generator Backup

Telecom towers and rural clinics typically have a diesel generator that runs 24/7 – wasting fuel. This system’s 16.07kWh battery buffers solar and grid/generator, cutting fuel consumption by up to 80%. The dual mode selector: UPS (10ms) keeps critical loads alive during short grid flickers; generator mode (20ms) prevents false starts on unstable generator power. White‑label monitoring app allows remote generator start/stop commands.

Parameters

Nominal Voltage/Capacity51.2V/314Ah
Total Energy16.07kWh
Rated/Standard Discharge Capacity≥314Ah
Charge Cut-off Voltage56~58.4V
Standard Charge/Discharge Current150A
Cycle Life≥ 6000 cycles, 70% SOH, 25°C
TypeOff-grid
Input Voltage Range90~280VAC
Output Power12kW
Output Voltage/Frequency230VAC, 50/60Hz±0.1%
Maximum Open Circuit Voltage500Vdc
MPPT Maximum Power9000W (Efficiency 99.5%)
DisplayLCD
CommunicationUSB, RS485
Operating Temperature-10°C ~ 60°C
DisplayLCD
CommunicationCAN, RS485, WiFi
Operating Temperature-10°C ~ 60°C
Dimensions580×580×643 mm
Weight≤ 144 kg

Certificate

Pre-integrated UN38.3, MSDS, UL, CE, FCC, IEC, RoHS and other certifications to shorten market access cycles.
MSDS
UN38.3
UL
UL
Identification and Classification Report for Air Transport of Goods
Report for Safe Transport of Goods
Material Safety Data Sheet
UN38.3

Wholesale Process

Quality Control

Frequently Asked Questions (FAQ)

Dual MPPT allows connecting two separate solar arrays that face different directions (e.g., half east, half west) or have different shading patterns. Each MPPT channel independently finds the maximum power point – you can harvest up to 30% more daily energy compared to wiring all panels to a single MPPT, where one shaded or mismatched string drags down the whole array.

  • UPS mode (10ms transfer): Use when your backup source is the grid (or a very fast inverter generator). It switches to battery almost instantly – perfect for computers, servers, medical equipment, and any load that cannot tolerate a power blink.

  • Generator mode (20ms transfer): Use when you have a conventional diesel or propane generator. The 20ms delay allows the generator to start, reach stable voltage and frequency, and then the inverter connects. This prevents the generator from being hit with a sudden load before it’s ready, and also protects the inverter from dirty generator power.

You can change the mode anytime via the LCD or mobile app.

  • Single channel (one PV input used): max 27A, 9000W, voltage 60‑450Vdc operating (500Vdc open circuit).

  • Both channels used: each channel limited to 22.5A (total 45A), combined max 15,000W. Voltage range same 60‑450Vdc per channel.

This means you can connect e.g., 8000W on channel 1 and 7000W on channel 2, as long as neither exceeds 22.5A (or 27A if only one channel active). The controller automatically manages current sharing.

This system prioritizes high inverter power (12kW) and dual MPPT flexibility over absolute peak efficiency. 94% is still very good – the difference between 94% and 99% on a 10kW array is about 500W lost. However, the benefit is you gain the ability to run 12kW loads and use two separate PV strings. Many real‑world installations see higher overall harvest from dual MPPT than the small efficiency loss. For maximum efficiency with single MPPT, see our other models.

Yes. A 5‑ton AC typically draws 5‑6kW running with a startup surge of 12‑15kW. This inverter delivers 12kW continuous and 24kVA peak (≈19‑20kW for a few seconds) – enough for most residential 5‑ton units. For very large commercial AC, we recommend adding a soft starter to reduce surge current. The generator mode (20ms) is especially useful if your AC is powered by a generator during outages.

The battery is 16.07kWh (314Ah). Max total charge current is 160A (PV) + 160A (AC) = 320A theoretical, but practical limit is around 250A due to BMS and cell ratings. At 250A and 51.2V, that’s about 12.8kW. Empty to full would take roughly 1.2‑1.5 hours under ideal conditions (full sun + grid/generator). In real off‑grid use, solar alone (up to 9000W) charges in about 2 hours.

The MPPT operating range starts at 60Vdc. However, the inverter requires at least 80V (similar to other models) to wake up and start tracking. Once active, it can harvest down to 60V. This low threshold allows early morning and late afternoon generation.

Yes. You can leave the second channel disconnected. The system will operate normally on a single PV input, up to 9000W (27A). You can add the second array later without changing any hardware – just connect and configure via the LCD.

  • Dimensions: 580×580×643 mm (same as 6kW16kWh footprint and height)

  • Weight: ≤144 kg

  • IP20 – indoor use (garage, utility room, basement)

  • Mounting: floor standing recommended; wall mounting possible with heavy‑duty bracket (optional accessory)

  • Clearance: 200mm on sides and top for airflow

  • Operating temperature: -10°C to +60°C

Two persons recommended for lifting due to weight. It fits through standard doorways.

No. The inverter has a built-in relay that disconnects the AC input during generator mode delay. You simply connect the generator output to the AC input terminals. The inverter detects the generator presence (voltage/frequency) and applies the 20ms delay automatically. For fully automated generator start/stop (e.g., when battery is low), we offer a dry contact accessory that connects to the generator’s remote start terminals.

  • CAN (for parallel operation and internal BMS)

  • RS485 (Modbus RTU – connect to SCADA, energy meters, or generator controllers)

  • WiFi (2.4GHz – for white‑label mobile app)

  • USB (local firmware upgrade or data logging to flash drive)

We provide full protocol documentation to OEM partners upon NDA.

We are the factory. Customization includes:

  • Logo on front panel and LCD startup screen

  • Custom packaging (color box with your artwork, foam inserts, pallet labeling)

  • White‑label mobile app (your brand name, icon, color theme, optional private server)

  • Custom user manual and spec sheet in your brand language

  • Factory pre‑set parameters (default backup mode, charging limits, voltage thresholds, and generator start/stop logic)

MOQ for logo branding: 100 units. Sample orders (1‑2 units) available for evaluation. Bulk pricing available for containers. Contact us for a quote based on destination port and customization level.

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