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15kWh Solar Stacked Lithium Battery

15kWh Solar Stacked Lithium Battery Manufacturer

We are a direct manufacturer of stackable home solar energy storage systems, designed for whole-home backup, daily solar self-consumption, and off-grid living. The system uses LiFePO4 stacked lithium battery modules with a plug-and-play stacking structure—fast installation, clean wiring, and flexible capacity upgrades.

  • High-quality LiFePO4 cells for long cycle life (6,000+ cycles class)
  • Off-grid / grid-tied charging and discharging
  • Bluetooth / Wi-Fi monitoring (battery stack monitor via App)
  • Global OEM & ODM advanced production lines for brand partners
Battery Manage System
Overcurrent Protection
Over-discharge Protection
Low power Protection
High-Low Temp Protection
Overload Protection
Short circuit Protection
Disconnection Protection
Universal 5 hole
US-JP std
Universal std
EU std
AU std
British std
Get an up-to-date quote with additional free information to download!

Why 15kW Power Stack Batteries for Homes

Whole-House Power Output + Expandable Battery Stacks
A 5kW output system is typically chosen when the home has:
  • multiple air conditioners (or larger tonnage AC),
  • high starting-surge loads (pumps, refrigerators, compressors)
  • cooking loads or mixed household + small business usage

With the 5kWh per layer architecture, users can expand energy by adding battery stacks instead of replacing the whole system. This makes it easier for installers to upsell upgrades later, and easier for homeowners to scale.

15kW Stacked Solar Battery for Home

Off-Grid & Hybrid Solar Operation

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

Core Advantages

Quick Installation

Stackable design reduces installer time and cable complexity.

Smart Battery Management System

Remote monitoring and real-time alarms via App.

High Cycle Life

LiFePO4 chemistry supports long service life for daily cycling.

Advanced Structure

Higher energy density within the same footprint (battery stacks).

Deep Customization (OEM/ODM)

Branding, labeling, manuals, packaging, and project configuration support.

Device Compatibility

Designed to integrate smoothly with mainstream residential energy systems.

Battery Manage System (BMS) Safety Protection

A robust BMS is essential for a stacked lithium battery used at high power levels. Our protection logic includes:
BMS for 5 kW battery stacks
  • Overcurrent Protection
  • Over-discharge Protection
  • Low Power Protection
  • High / Low Temperature Protection
  • Overload Protection
  • Short-Circuit Protection
  • Automatic Disconnection Protection
This ensures the battery stack stays stable under peak loads and in harsh weather or emergency backup situations.

Mobility + Emergency-Ready Design

Mobility + Emergency-Ready Design

easy to move indoors/outdoors

Built for power outages

stable backup power without complicated rewiring

Flexible use

stack your batteries anywhere you need energy resilience

Applications

15kW Home Stacked Power

Whole-House Backup (Grid-Tied + Backup)

With 15kWh of capacity, this system keeps high-load homes powered for longer during extended outages — no compromise on runtime.

15kW Off Grid Solar Power Battery

Off-Grid Home Power

Connect PV → charge your stack battery → run loads day/night. Add more modules when you expand your home or add new appliances.

15kW Camping Power Battery System

Emergency + Mobile Scenarios

Rugged design for emergencies. If your model includes wheels/handle (like your other SKUs), it’s easy to position in a garage / utility room / sheltered outdoor space.

OEM & ODM Support

OEM/ODM Capabilities (For Distributors & Brands)

We support deep customization for power stack battery programs:

Enclosure and structural customization
Branding, labeling, and packaging design
Wiring harness / connector / output options (project-based)
Manuals, marketing assets, and dealer kit support
Automated Production Line for Solar Battery Pack

Parameters

Battery Battery Capacity15.66kWh
Battery Rated Voltage51.2V
Battery Cycle LifeLiFePO4, ≥ 6000 cycles, 70% SOH, 25°C
Battery Charge/Discharge Current100A
Battery Dimensions600×430×150 mm
Battery Weight46.9 kg
Inverter Rated AC Output Power5kW
Inverter AC Output Voltage220V (Optional)
Inverter AC Output Frequency50Hz (Optional)
Inverter AC Rated Input Voltage220V (Optional)
Inverter AC Input Power3000W
Inverter Grid TypeOff-grid/ On-grid
Inverter DisplayLCD
Inverter CommunicationRS485
Inverter Operating Temperature-10°C ~ 60°C
Inverter Dimensions600×430×204 mm
Inverter Weight16.4 kg
Base Dimensions600×430×152 mm
Base Weight9.3 kg
Certificates

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)

Runtime depends on the battery energy (kWh) and your home’s average load (kW). A common estimate is: Runtime (hours) ≈ Usable kWh ÷ Average kW. For example, a 15kWh battery running a 3kW average load may last around 4–5 hours, while a 1.5kW average load could last closer to 8–10 hours. Real-world runtime also varies with inverter efficiency, temperature, and surge loads from appliances like air conditioners and pumps.

It depends on the AC type (inverter vs non-inverter), tonnage, and starting surge current. A 5kW output system can often handle 1–2 air conditioners plus essential loads, but the safe approach is to check each AC’s rated power and startup requirements. If multiple AC units must run at once, consider load management (priority circuits) and sufficient battery capacity for longer runtime.

A 5kW system can power most household loads, including refrigerators, lighting, TVs, computers, small kitchen appliances, pumps, and often air conditioning. The main limitation is not only total watts, but also surge power and how many large loads are running simultaneously. For “whole-home” backup, many homeowners prioritize essential circuits and add more battery modules to extend runtime.

A 12V 220Ah battery stores about 12V × 220Ah = 2,640Wh (2.64kWh) (nominal). A 15kWh battery is roughly 15 ÷ 2.64 ≈ 5.7, so about 6 units in theory. In practice, you should plan for inverter losses and usable depth of discharge, so 6–7 batteries is a more realistic equivalency range depending on system design.

If you mean a 5kW solar array (PV), divide 5,000W by the panel wattage. For example, with 400W panels: 5,000 ÷ 400 ≈ 13 panels. With 550W panels: 5,000 ÷ 550 ≈ 10 panels. Final count depends on roof space, shading, orientation, and local code/utility limits.

Solar panels increase energy generation, while batteries increase energy availability at night and during outages. If your batteries rarely reach full charge, add more panels first. If your batteries fill quickly at midday but you still buy power at night, add more battery capacity. The best value usually comes from balancing both based on your load profile.

The 40/80 rule is a battery-longevity guideline: keeping the battery between about 40% and 80% state of charge for routine daily use can reduce long-term degradation. While LiFePO4 is more durable than many lithium chemistries, avoiding constant 100% storage (especially in heat) and avoiding very deep discharge can still help maximize service life. Many users set a daily charge limit and reserve full charges for outage readiness.

Charging time depends on the grid charging power (kW). A simple estimate is: Time (hours) ≈ Battery kWh ÷ Charge kW. For example, charging at 3kW may take about 5–6 hours, while 5kW may take about 3–4 hours. Charging usually slows near the top of the charge curve, so real charging time can be slightly longer than the basic calculation.

Cost depends on what is included (inverter, battery capacity, PV array, installation), your market, and whether installation is included. A full system cost also varies based on battery capacity (kWh), certification requirements, wiring/protection components, and labor. For B2B projects, pricing is best quoted by configuration (5kW inverter + number of battery modules + required standards).

For many homes, yes – especially if you prioritize essential circuits and manage high-load devices. If you run multiple large AC units, electric ovens, electric water heaters, and EV charging simultaneously, you may exceed 5kW. A load list and peak-demand estimate is the best way to confirm, and capacity can be extended by adding more battery modules for longer runtime.

It can, depending on electricity price, sunshine, incentives, installation cost, and how much of your solar you use directly. Batteries improve savings when you have high evening consumption or unfavorable export rates, because they increase self-consumption. Payback is most reliable when sizing matches your actual usage patterns instead of oversizing for theoretical production.

Air conditioning/heating, water heating, electric ovens/stoves, clothes dryers, and older refrigerators/freezers are frequent top contributors. Long run-times at high power matter more than short bursts. Understanding your daily load profile helps size both PV and battery modules correctly.

Yes. When the battery reaches its charge limit, the system will reduce charging current or curtail PV input depending on inverter/MPPT behavior. Off-grid systems often divert excess energy to loads or simply limit PV output once storage is full.

It depends on how fast you want to charge and your peak sun hours. If you want to charge 15kWh in about 5 hours, you need roughly 3kW of effective charging power (and more PV capacity to account for losses and clouds). Many systems oversize PV slightly to ensure consistent charging performance.

Not usually—partial charging is often beneficial for longevity. Many users operate between 20–80% or 30–90% for daily cycling. If your priority is maximum backup readiness, you may charge higher more often, but daily partial charging can help extend life.

Gentler charging rates can reduce heat and stress, which may support longer battery life. However, “best” charging rate depends on the battery design and BMS settings. A properly designed LiFePO4 system balances safe charging speed with long-term durability.

Higher Ah means more capacity at the same voltage, which can provide longer runtime. Lifespan, however, depends on cell quality, operating temperature, depth of discharge, and charge/discharge rates. A well-designed BMS and correct installation often matter more than Ah alone.

Yes, in many cases. The runtime depends on voltage, fridge power, duty cycle, and inverter efficiency. A larger battery capacity generally provides more runtime and less depth of discharge per day, which can improve longevity.

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2026 TURSAN Product Catalog

1 file(s) 12.81 MB
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5kW Stacked Home Battery Backup User Manual

1 file(s) 844.37 KB
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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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