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48V600Ah Off-Grid 12kW 32kWh All in one ESS

51.2V 628Ah 32.15kWh Home Battery Storage with 12kW Built-in Off-Grid Inverter

Maximum energy independence: 51.2V 628Ah (32.15kWh) LiFePO4 battery combined with a 12kW off-grid inverter featuring dual MPPT trackers (single channel 27A/9000W, total PV input 15000W). This system supports both UPS mode (sub-10ms switchover) and generator mode for hybrid backup strategies. 94% solar charging efficiency, 6000 cycle life, and built-in WiFi BMS for fleet management. Ideal for multi-family homes, light commercial, or telecom base stations requiring high daily throughput. The 16S2P configuration ensures balanced charge and extended calendar life. With 32kWh usable energy, you can survive 2-3 days without sun. Integrate diesel generator automatically when battery is low. Contact us for OEM, private labeling, and technical support.

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

  • 32.15kWh large-capacity battery (628Ah) paired with 12kW inverter: delivers extended runtime and high power simultaneously – ideal for whole-home and light commercial applications.
  • Dual independent MPPT trackers with 15,000W total PV input: maximize solar harvest from split arrays (east/west or different roof pitches) with independent optimization.
  • 250A standard charge/discharge current: supports rapid energy throughput – perfect for high-consumption scenarios and fast daytime recharging.
  • Selectable UPS mode (10ms) or Generator mode (20ms): choose instant transfer for sensitive loads, or delayed connection for stable generator synchronization.
  • 99.9% MPPT tracking efficiency + 94% PV charging efficiency: excellent conversion for large solar arrays while maintaining real-world cost-effectiveness.
  • Wide MPPT voltage range (60–450Vdc, 500Vdc max): flexible panel configurations with low 60V start-up – works with diverse solar module types.
  • 16S2P LiFePO₄ architecture (6000 cycles @ 70% SOH): Grade A cells provide over 10 years of reliable service, reducing long-term ownership costs.
  • Built-in WiFi, CAN, RS485 with LCD touch screen: full remote monitoring via white-label app, plus Modbus RTU for third-party system integration.
16kWh off-grid Home energy storage

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

12kW 32kWh Large Residential Estates Solar energy storage battery

Large Residential Estates & Multi-Building Properties

Estate homes with guest houses, pools, workshops, and electric vehicle charging need both high power and large storage. This system delivers 12kW continuous output with 32.15kWh storage – enough to run multiple buildings overnight. Dual MPPT allows connecting garage roof panels and main house panels separately, optimizing each array independently. Distributors serving luxury property markets gain a premium "whole-estate backup" solution.

Commercial & Light Industrial – Retail Stores, Restaurants, Small Factories

Retail shops and restaurants run refrigeration, lighting, POS systems, kitchen equipment, and HVAC simultaneously – outages mean lost revenue and spoiled inventory. This system's 32.15kWh provides 8–12 hours of backup for a typical 3–4kW commercial load. The 24kVA surge handles compressor startups without tripping. Generator mode (20ms) allows seamless integration with existing backup generators for extended outages.

Telecom Base Stations & Remote Infrastructure with High Daily Throughput

Telecom towers, remote clinics, and pumping stations require 24/7 uptime with frequent deep cycling. This system's 250A charge/discharge current handles high daily energy throughput, while 32.15kWh capacity provides multiple days of autonomy during cloudy periods. Dual MPPT allows connecting ground-mounted and roof-mounted arrays separately. CAN/RS485 integration enables centralized remote monitoring for fleet operators.

Parameters

Nominal Voltage/Capacity51.2V/628Ah
Total Energy32.15kWh
Rated/Standard Discharge Capacity≥314Ah
Charge Cut-off Voltage56~58.4V
Standard Charge/Discharge Current250A
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
Dimensions580×580×938 mm
Weight≤ 253 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

About us

Founded in 2016 · Headquartered in China

A decade of energy storage manufacturing excellence.

Who We Are

Residential Solar Energy Storage Battery Solution Manufacturer

TURSAN is a high-tech enterprise integrating R&D, manufacturing, and global sales of lithium battery–based energy storage systems. Founded in 2016, we operate a 20,000+m² production facility producing reliable LiFePO4 power solutions for residential, commercial, and outdoor applications.

 

Through a strategic partnership with BYD, we co-manufacture larger-capacity, safer, and more environmentally friendly portable power stations and home battery backups. Today we serve global brand owners, distributors, EPC contractors, and project developers in over 60 countries — saving OEM clients up to 20% in annual sourcing cost while meeting the toughest international safety standards.

Home Battery Backup
Portable Power Station
Industrial BESS
Mobile EV Charging
LiFePO4 Battery
Off-Grid & Hybrid Inverter

OEM&ODM Process

Phase 1

Confirm Requirements and Finalise the Solution

We collect all customer specifications: voltage, capacity, dimensions, communication protocol, etc. Then we decide if it is a pure OEM job (build exactly to your drawings) or an ODM job (we provide the design). We issue a clear BOM (bill of materials) and 2D/3D drawings for both parties to sign off, avoiding any later misunderstandings.

Phase 1
Phase 2
Phase 2

Procurement and Incoming Inspection

We purchase all materials according to the BOM: cells, enclosure, brackets, screws, wiring, BMS boards, etc. When goods arrive, we do sampling or 100% inspection. For cells, we measure voltage, internal resistance and check appearance. For structural parts, we check dimensions and hole sizes. Any non‑conforming items are rejected and never go into our warehouse.

Phase 3

Cell Sorting and Matching

We group cells from the same batch by voltage and internal resistance values. We then match cells with the closest parameters into one set (for example, if a string uses 4 cells, the voltage and resistance differences among those 4 must stay within our set limits). This directly affects how long the battery pack will last without performance decay.

Phase 3
Phase 4
Phase 4

Laser Welding and Module Assembly

We fix cells into holders, then laser‑weld the tabs (connectors). We do pull‑force tests on sample weld spots to check strength. After that, we fasten the welded sub‑modules into the enclosure or tray, using torque‑controlled tools to apply the correct tightening force.

Phase 5

BMS Installation and Wiring Connection

We mount the main BMS and slave boards in their designated positions, then plug in all voltage sampling wires and temperature sensors. We always have a two‑person verification of the wiring sequence – this prevents reverse connections that could burn the boards when we power up.

Phase 5
Phase 6
Phase 6

First High‑Voltage Safety Test

We apply high voltage between the positive/negative terminals and the enclosure to measure insulation resistance and withstand voltage. We check for any leakage or breakdown. If this test fails, the module goes back for rework immediately – it does not move forward.

Phase 7

High‑Temperature Standing and Self‑Discharge (K‑Value) Check

We place the modules in a 45 °C room for 24–48 hours. We measure voltage before and after the standing period, then calculate the daily voltage drop (K‑value). Units with excessive drop are rejected because they indicate internal micro‑shorts that could cause early failure later.

Phase 7
Phase 8
Phase 8

Charge/Discharge Aging and Capacity Calibration

We connect the modules to charge/discharge equipment and run several full cycles at the current specified by the customer. During the process, we record actual discharge capacity, charge/discharge efficiency, and the temperature/voltage differences among individual cells. If all data stay within our acceptance limits, we calibrate the final rated capacity. If not, we isolate and analyse the failed units.

Phase 9

Final Inspection, Labelling and Packaging

We re‑measure total voltage, internal resistance and insulation performance. We check appearance for scratches, gaps, or damaged screws. We attach a permanent nameplate (with serial number), UN38.3 hazardous‑goods label, and all required operation warning labels. Then we package the battery with foam or cardboard for shock protection, as per customer requirements, and record the final weight.

Phase 9
Phase 10
Phase 10

Shipment and Document Handover

We verify the shipping quantity, address and consignee. We prepare all accompanying documents: factory test report, MSDS, UN38.3 test summary, and transport condition certificate. We arrange pickup with our logistics partner, and after dispatch we send the tracking number and estimated arrival time to the customer.

Quality Control

Frequently Asked Questions (FAQ)

Total energy is 32.15kWh. With LiFePO₄ chemistry and BMS management, over 90% (≈29kWh) is usable per cycle without degrading battery life. For a typical home consuming 10–12kWh/day, this provides 2–3 full days of autonomy without solar input.

12kW continuous (24kVA peak) can run:

  • 5-ton central AC (≈5–6kW running, 14–16kW surge)

  • Electric oven + cooktop (≈7–8kW combined)

  • Refrigerator, freezer, lighting, electronics (≈1–2kW)

  • Well pump or pool pump (≈1.5–2.5kW)

  • EV charger (7kW level 2 – with other loads managed)

The 24kVA surge handles motor startups without tripping. For commercial loads, multiple units can be paralleled.

Two independent MPPT trackers allow connecting two solar arrays with different orientations (e.g., east-facing and west-facing), different tilt angles, or different shading conditions. Each tracker independently finds the maximum power point – this can capture 20–30% more daily energy compared to wiring all panels to a single MPPT, where a shaded or mismatched string pulls down the whole array’s performance.

  • Single channel used: max 27A, 9000W, 60–450Vdc operating (500Vdc open circuit)

  • Both channels used: each channel limited to 22.5A, combined max 15,000W

This allows connecting e.g., 7500W on channel 1 and 7500W on channel 2, as long as neither exceeds 22.5A when both are active.

250A at 51.2V equals approximately 12.8kW of power throughput. This means:

  • The battery can fully recharge in under 2 hours with optimal solar + AC input

  • High continuous loads (up to 12kW) are supported without battery bottleneck

  • Ideal for applications with daily full cycling and fast recharging needs

For comparison, standard 150A systems max out at ≈7.7kW throughput – this model offers 66% more power handling.

  • UPS mode (10ms transfer): Switches to battery almost instantly when grid fails. Use when your backup source is the utility grid or a very fast inverter generator. Perfect for computers, servers, medical devices, and POS systems that cannot tolerate any interruption.

  • Generator mode (20ms transfer): Delays connection by 20ms, allowing a diesel or propane generator to start and stabilize before the inverter connects. Prevents generator overload and protects the inverter from unstable generator output.

You can select the mode via the LCD touch screen or mobile app.

This system prioritizes high inverter power (12kW), dual MPPT flexibility, and the 250A high-current BMS over absolute peak efficiency. 94% is still excellent – on a 10kW array, the difference between 94% and 99% is about 500W lost. However, the benefit is that you can run 12kW loads, use two separate PV strings, and charge at 250A – features that most 99% efficient single-MPPT systems cannot offer. For most real-world installations, the dual MPPT harvest gain far outweighs the small efficiency loss.

Yes. The system supports hybrid charging – solar and AC input (grid or generator) can work together to recharge the battery. Max combined charge current is limited by the BMS to ensure battery safety. You can set charging priority (solar first, grid/generator as backup) via the LCD or mobile app.

  • Dimensions: 580×580×938 mm (taller than 16kWh models due to doubled battery capacity)

  • Weight: ≤253 kg – requires a pallet jack or two-person lift; floor standing recommended

  • IP20 – indoor installation only (garage, utility room, basement, equipment shed)

  • Clearance: 200mm on all sides for ventilation and cable access

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

  • Max altitude: 4000m (derating above 1000m)

We recommend professional installation by a certified electrician. Wall mounting is not recommended due to weight.

Yes. Up to 6 units can be paralleled via CAN bus communication, providing:

  • 192.9kWh total storage

  • 72kW total inverter output

  • 1500A total charge/discharge current

The BMS supports master-slave configuration. Parallel kits (communication cables, busbars, and configuration guide) are available upon request.

  • CAN: Internal BMS communication and parallel operation

  • RS485 (Modbus RTU): Connect to SCADA systems, energy meters, generator controllers, or building management systems

  • WiFi (2.4GHz): White-label mobile app for remote monitoring (iOS/Android)

  • USB: Local data logging and firmware updates

We provide full Modbus register maps and CAN protocol documentation to OEM partners upon NDA.

We are the factory – not a trading company. Customization includes:

  • Logo printing on front panel and LCD startup screen

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

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

  • Custom user manual and technical specification sheet in your brand language

  • Factory pre-set parameters: default backup mode, charging current limits, voltage thresholds, generator start/stop logic, and grid priority settings

  • Custom connector types or cable lengths (subject to engineering review)

MOQ for logo branding: 100 units. Sample orders (1–2 units) available for evaluation with unbranded or pre-production branding. Bulk container pricing available – contact us with your destination port and quantity for a formal quote.

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Partner with TURSAN, Ignite a New Chapter in Your Country's Energy Storage Business

As a professional manufacturer of solar lithium battery energy storage systems, TURSAN is dedicated to providing the global market with high-quality home energy storage batteries, inverters, portable power stations, and all-in-one storage solutions. We now sincerely invite you to become our exclusive partner in your country or region, to jointly develop the clean energy storage market and create steadily growing business value.

Market Protection

Exclusive Regional Authorization

After signing the agreement, we will cease wholesale distribution to other clients in your region, fully safeguarding your market interests.

Fast Fulfillment

Priority Order Processing & Shipping

Ensure you can respond to local demand immediately and capture time‑sensitive market opportunities.

Brand Ownership

Product Customization Support

From your first order, we can design and produce energy storage systems completely tailored to your brand.

Full Coverage

Comprehensive Product Range Suppor

From home storage and portable power to inverters and all-in-one units with built-in inverters — meeting diverse application needs.

Global Trust

Proven Success in 30+ Countries

We have already helped partners worldwide achieve measurable brand growth and increased profitability.

Partner Flexibility

Your Most Reliable Backend

Whether you are a systems integrator, electrical distributor, or building your own brand, you get stable products and flexible cooperation mechanisms.

📩 Contact us now to receive a customized partnership proposal and product information.
Let’s join hands to bring reliable power solutions to homes and businesses, and co-create a green energy future together!

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