NEOVOLT BW-BAT 20kWh HV All-in-One 1PH Battery Kit with T5 5kW Single Phase Hybrid Inverter

NEOVOLT 20kWh HV All-in-One Battery Kit with S5 5kW single-phase hybrid inverter, 2 × BW-BAT-9.6P LiFePO4 batteries (19.2kWh nominal) and energy meter.

  • Expandable storage: Up to 6 battery modules in parallel (57.6kWh nominal).
  • Key specifications: 96V battery system, 2 MPPT, 10kW max. PV input, IP65 and 5kVA backup output.
SKU: NEOVOLT-ESS-S5-20KWH-BATTERY-KIT

3988.00 €

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Product description

NEOVOLT S5 20kWh High-Voltage Battery Storage System for Single-Phase Solar Installations

Easy to install. Single phase plug and play 19.2kWh solar battery system. Easy as 1,2,3.

The NEOVOLT BW-BAT 20kWh HV All-in-One Battery Kit with S5 5kW Single-Phase Hybrid Inverter is a complete solar battery energy storage package for residential photovoltaic installations requiring substantial storage capacity on a single-phase grid connection.

Combining the NEOVOLT BW-INV-SPH5K hybrid inverter with two BW-BAT-9.6P LiFePO4 battery modules, the system provides 19.2kWh nominal energy storage, integrated battery management and coordinated PV, battery and grid operation.

This configuration is intended for properties with moderate instantaneous power demand but comparatively high daily electricity consumption. It allows installers to specify a larger battery reserve without unnecessarily increasing the inverter’s rated AC output.

The manufacturer-matched architecture also simplifies battery communication and system integration compared with independently sourced inverter and battery combinations.

NEOVOLT S5 20kWh Battery Kit – Package Contents

The package includes:

  • 1 × NEOVOLT BW-INV-SPH5K – 5kW single-phase hybrid solar inverter with two independent MPPT trackers.
  • 2 × NEOVOLT BW-BAT-9.6P – 9.6kWh lithium iron phosphate battery modules with integrated BMS.
  • 1 × compatible energy meter – For grid measurement, load monitoring and supported energy management functions.

The 20kWh designation refers to the commercial battery capacity class. Actual usable energy depends on the battery revision, operating limits and manufacturer-approved settings.

Optional accessories: Base-mounting and wall-mounting brackets are available separately. Solar panels, external AC/DC protection devices and site-specific installation materials are not included in the listed package.

The required battery interconnection accessories, communication cables and mounting arrangement should be confirmed against the complete installation specification.

Why Choose a 20kWh Battery with a 5kW Single-Phase Hybrid Inverter?

Battery capacity and inverter output serve different functions. A larger battery does not necessarily require a higher-power inverter.

For residential installations with relatively modest peak demand but significant evening or overnight electricity consumption, the NEOVOLT S5 configuration allows the installer to prioritise stored energy over additional AC output capacity.

This is particularly relevant for households with daytime solar generation, overnight household loads, scheduled electrical appliances or electricity tariffs where shifting consumption between charging and discharging periods is commercially beneficial.

The inverter must still be sized against the property’s simultaneous loads, grid connection limits and intended backup circuits. A large battery bank cannot compensate for insufficient inverter output.

Single-Phase Grid Connection and Power Limits

The BW-INV-SPH5K provides 5kVA rated AC output on a 230V single-phase connection. The manufacturer specifies a 4.6kVA rating for the applicable German configuration.

Installers must confirm the permitted single-phase connection and export limits with the relevant distribution network operator before finalising the system design.

For properties with three-phase supply or three-phase loads requiring direct hybrid inverter integration, the NEOVOLT T5 20kWh Three-Phase Battery Kit is the more relevant configuration to evaluate.

Dual MPPT Solar PV Integration and Energy Management

The S5 hybrid inverter supports up to 10kW maximum PV input power, with two independent MPPT trackers and a maximum PV input voltage of 580V.

The dual-MPPT arrangement is useful for residential rooftops where modules are installed on different orientations, such as east-facing and west-facing roof sections.

Each tracker can operate independently within its specified voltage and current range, allowing the installer to design PV strings according to their electrical characteristics rather than combining unsuitable arrays.

A DC-oversized solar array may improve the available generation profile during lower-irradiance periods. However, the proposed array must be assessed against the inverter’s PV input limits, battery charging capacity and site-specific export requirements.

Self-Consumption and Battery Charging Strategy

The inverter’s internal Energy Management System coordinates photovoltaic generation, household consumption, grid interaction and supported battery charging modes.

Surplus solar electricity can be directed into the battery within the permitted operating limits. Stored energy can subsequently supply connected household loads according to the configured discharge strategy.

The included energy meter provides the measurement input required for energy-flow management. Remote monitoring and additional control functions depend on the installed communication hardware and supported software configuration.

For installers, the relevant design factors are the property’s measured consumption profile, available PV generation, charging window and required battery reserve—not battery capacity alone.

NEOVOLT 96V LiFePO4 Battery Architecture and Parallel Expansion

The BW-BAT-9.6P uses a 96V nominal DC battery architecture, with battery modules connected in parallel rather than series.

This arrangement maintains the nominal system voltage while increasing available energy storage capacity. It must not be confused with conventional 48V/51.2V battery platforms or multi-hundred-volt battery towers.

Inverter compatibility depends on the approved voltage range, BMS communication, charge/discharge limits and applicable firmware—not simply on whether two products use lithium iron phosphate cells.

Expandable Storage up to 57.6kWh

NEOVOLT specifies support for up to six BW-BAT-9.6P modules in parallel, providing a maximum nominal capacity of 57.6kWh.

This allows professional installers to plan additional battery storage where future consumption growth or a larger photovoltaic array justifies an expansion.

Additional modules require the manufacturer’s approved parallel connection arrangement, compatible BMS communication and the appropriate protection and connection equipment.

The inverter’s battery charging and discharging limits must also be checked when expanding storage. Adding battery modules increases stored energy but does not independently increase the system’s maximum AC output.

NEOVOLT additionally documents parallel operation of compatible single-phase hybrid inverters. Multi-inverter installations require their own approved wiring, communication and commissioning arrangements and are not included in this standard package.

Single-Phase Backup Power for Residential Electrical Circuits

The NEOVOLT S5 includes a dedicated backup output rated at 5kVA, with a manufacturer-specified transfer time below 10 milliseconds under supported operating conditions.

This allows the inverter to be incorporated into backup installations serving selected electrical circuits during a grid interruption.

Suitable applications may include lighting, refrigeration, networking equipment and other household loads whose combined demand remains within the permitted backup output.

Backup Design and Electrical Protection

For professional installers, backup capability must be established through the electrical design rather than assumed from the presence of a backup port.

The installation must account for:

  • Continuous and starting power requirements of the protected circuits.
  • Correct grid isolation and approved switching arrangements.
  • Neutral and earthing requirements during backup operation.
  • Available battery energy and configured minimum state of charge.
  • Applicable national electrical and distribution-network requirements.

The manufacturer’s stated transfer time does not replace a site-specific assessment of sensitive equipment requiring uninterrupted power.

Installation Requirements and Professional Commissioning

The NEOVOLT S5 battery storage system is intended for installation by qualified solar PV installers and electrical contractors familiar with hybrid inverter systems and lithium battery storage.

Both the inverter and battery family are specified with IP65 enclosure protection. Nevertheless, mounting location, ambient conditions, clearances and equipment accessibility must comply with the applicable installation instructions.

Each BW-BAT-9.6P module weighs approximately 86kg, making mechanical handling and mounting-surface suitability important installation considerations.

Battery charging is permitted within the manufacturer’s specified temperature range. Installations in unheated garages, plant rooms or other environments exposed to low temperatures must account for these operating limitations.

Pre-Commissioning Checks

Before energising the system, installers should verify:

  • PV strings: Correct polarity, open-circuit voltage, current limits and MPPT allocation.
  • Battery connections: Approved parallel wiring, DC protection and BMS communication.
  • Metering: Correct meter connections, direction of measurement and configuration.
  • Grid settings: Country-specific protection parameters, export limitations and applicable grid requirements.
  • Backup circuits: Load allocation, isolation, switching and protective-device coordination.
  • System software: Compatible firmware and the required monitoring configuration.

For existing photovoltaic installations, the proposed integration must be checked against the installed inverter, distribution board and metering arrangement. The S5 should not automatically be treated as a universally compatible AC-coupled retrofit battery system.

Buy NEOVOLT 20kWh Single-Phase Battery Storage Kits from 3Buy Solar Europe

3Buy Solar is an official NEOVOLT distributor serving professional solar installers, EPC contractors, electrical wholesalers, system integrators and renewable energy resellers across Europe.

This S5 package offers a defined procurement configuration for installers sourcing a complete single-phase hybrid inverter and solar battery system from one manufacturer.

Explore the NEOVOLT solar battery and hybrid inverter range or compare other complete energy storage kits with inverter available through 3Buy Solar.

For solar installation videos and industry resources, visit the 3Buy Solar YouTube Channel. Model-specific commissioning must always follow the applicable NEOVOLT documentation.

Order Online or Request a B2B Project Quotation

Purchase the NEOVOLT S5 20kWh Single-Phase Battery Kit directly through the 3Buy Solar webshop using the Add to Cart button above.

Professional installers, wholesalers and EPC contractors purchasing for multiple projects can request a B2B quotation covering quantities, destination country, availability and required installation accessories.

For procurement enquiries, quote the exact S5 configuration and confirm any optional mounting, connection or backup equipment required for the installation.

Product Datasheet and Downloads

  • Installation and User Manual Neovolt BW-INV-SPH5K Inverter EN

  • Installation and User Manual Neovolt BW-BAT-9.6P  Battery EN

  • Hybrid Inverters Compatibility List – ONLY With NEOVOLT

  • Installations- und Benutzerhandbücher Neovolt BW-INV-SPH5K Inverter DE

  • Installations- und Benutzerhandbücher Neovolt BW-BAT-9.6P DE

  • CE Declaration of Conformity

  • EMC Compliance Certificate

  • IEC Certificate

  • VDE Certificate

  • EMC Certificate

  • G99 Certificate

  • UL Certificate

  • UN 38.3 Test Report

  • MSDS Certificate

  • Manufacturer Warranty Neovolt Inverters

  • Manufacturer Warranty Neovolt Batteries

FAQ regarding NEOVOLT S5 20kWh Single-Phase Battery Kit

The package includes 1 × NEOVOLT BW-INV-SPH5K 5kW single-phase hybrid inverter, 2 × BW-BAT-9.6P LiFePO4 battery modules and a compatible energy meter. The batteries provide 19.2kWh nominal storage capacity. Solar panels, optional mounting brackets and site-specific electrical protection equipment are supplied separately. Watch our solar trainings and webinars or visit you 3Buy Youtube Channel. … or alternatively you can browse for our latest articles regarding renewable and energy efficient heating and cooling in our Solar Distributor Blog.

Have you checked all our products? Go to our Solar PV and Energy Storage Shop | 3Buy Installer-Grade & DIY EU

The NEOVOLT system supports up to six BW-BAT-9.6P batteries in parallel, providing a maximum nominal storage capacity of 57.6kWh. The supplied kit contains two modules. Additional batteries must be installed using manufacturer-approved connections, compatible BMS communication and suitable electrical protection. The nominal battery voltage remains 96V.

Yes. The BW-INV-SPH5K supports up to 10kW maximum PV input power, with two independent MPPT trackers and a maximum DC input voltage of 580V. This allows appropriately designed PV array oversizing, but the inverter’s rated AC output remains 5kVA (4.6kVA under the specified German configuration). Installers must verify PV string voltage, current and local grid requirements.

Yes. The S5 hybrid inverter provides a 5kVA rated single-phase backup output, with a manufacturer-specified transfer time below 10ms under supported conditions. Backup operation requires correctly configured circuits, suitable grid isolation and appropriate electrical protection. Whole-house backup depends on the property’s electrical loads, available battery energy and approved installation design.

Specification

Manufacturer

BrandNEOVOLT

Technical Specifications

Weight200 kg
Dimensions590 × 1500 × 205 mm
ManufacturerBytewatt Technology Co., Ltd.
BrandNEOVOLT
Product CategoryBatteries, Battery Sets, Energy Storage System Kits with Inverter
Nominal Voltage [V]The nominal voltage is defined as the voltage value assigned to an electric circuit or system to designate its voltage class. In simple words, the voltage level of an electrical power system is called the nominal voltage of the system.96V
Battery Voltage Range [V]Indicates the allowable DC voltage window in which the solar battery or energy storage system operates safely. Ensure compatibility with the selected solar inverter and hybrid inverter input voltage range.90 V- 180 V
Nominal Capacity [kWh]Nominal capacity (in kWh) typically refers to the rated energy storage or output capacity of a system, such as a battery, energy storage system, or electric vehicle battery. It indicates the amount of energy that the system can store or deliver under normal operating conditions.19.2 kWh
Nominal Current [A]Nominal current is essentially the normal electrical current that we would expect to flow through a circuit at any given time.50 A
Max. Charge & Discharge Current [A]The maximum charge and discharge current refers to the highest current a battery or energy storage system can handle safely during charging and discharging processes. It is an important parameter that helps ensure the battery operates within safe limits and prevents damage, overheating, or other safety hazards.60 A
Battery TypeHigh VoltageEfficient large-scale battery technology operating above 400 V DC., Lithium Iron Phosphate (LiFePO4) – LFPLithium Iron Phosphate (LiFePO4) batteries are one of the most reliable and safest energy storage solutions for solar systems. Known for their long lifespan, high efficiency, and superior safety, these batteries are a top choice for residential, commercial, and off-grid solar storage.
CommunicationSpecifies how the device communicates with other systems or networks—options include RS485, CAN, LAN, Wi-Fi, 4G, and Optical for data exchange and remote monitoring.CAN, RS485
Inverter TypeAn inverter type refers to the specific technology and functionality of a solar inverter. The main types include grid-tied, off-grid, and hybrid inverters. Each serves a different purpose:Hybrid
PhasesDescribes the electrical phase configuration—Single-phase for residential use, Three-phase for commercial or industrial systems, and Split-phase common in North American households.Single PhaseStandard residential power connection for solar and storage systems.
Rated Power [W]Indicates the maximum continuous power output or input the device can handle under standard operating conditions, measured in watts (W).5 kW
Max. PV Array Input Power [Wp]The PV array power is the maximum power of the PV modules connected to one PV inverter.10000W
Max. PV Input Voltage [V]Maximum PV voltage, which is an absolute limit of the voltage of PV panels connected in series, and “nominal PV power”. If more wattage is available from the panels, the controller won\\\'t use it, it will just limit the current to what it can handle.580V
No. of MPP Trackers (MPPT)An MPPT, or maximum power point tracker is an electronic DC to DC converter that optimizes the match between the solar array (PV panels), and the battery bank or utility grid via the solar inverter. To put it simply, they convert a higher voltage DC output from solar panels (and a few wind generators) down to the lower voltage needed to charge batteries. Maximum Power Point Tracking (MPPT) is a feature built into all grid tied solar inverters. In the simplest terms, this funky sounding feature ensures that your solar panels are always working at their maximum efficiency, no matter what the conditions.2
MPPT Voltage Range [V]The MPPT (Maximum Power Point Tracking) voltage range refers to the range of input voltages at which an MPPT solar charge controller or inverter can operate efficiently to optimize the power output of a solar panel or array.100V – 550V
Maximum Power Current-IMPP [A]IMP is the current a solar panel delivers when operating at its maximum power point under standard test conditions (STC). Crucial for system performance and inverter pairing.15
Max. Output Current [A]The maximum AC current the hybrid inverter can deliver to connected loads or the electrical grid, expressed in amperes (A), under the manufacturer\'s specified operating conditions.21.7
Short Circuit Current [A]ISC is the current a solar panel generates when its output is shorted (no load). Measured under STC, it’s used for fuse sizing and safety calculations.18.75
Nominal AC frequency [Hz]Nominal frequency is the frequency specified by the manufacturer or supplier for a device in normal operation. 60Hz systems tend to be more efficient for longer distance transmission and are better suited for high-power applications, while 50Hz systems are more suited for low-power, local distribution. In the U.S. and many other places it is 60Hz. In Europe and many other places it\'s 50Hz.50Hz, 60Hz
Maximum Battery Expansion6 modules
Max. Battery Capacity57.6 kWh
Protection Rating [IP]IP (or \"Ingress Protection\") ratings are defined in international standard EN 60529 (British BS EN 60529:1992, European IEC 60509:1989). They are used to define levels of sealing effectiveness of electrical enclosures against intrusion from foreign bodies (tools, dirt etc) and moisture.IP65An IP65 rated enclosure gives protection against low pressure water jets from any direction, as well as condensation and water spray. It's suitable for most outdoor enclosures that won't encounter extreme weather such as flooding.
WarrantyNormally covers, manufacturing defects, durability issues, or equipment failure. The warranty typically covers the cost of replacing the faulty or damaged panel with a new working one. Please refer to the Warranty Documents of the product on the Manufacturer s webpage.10 Years
Certification ComplianceC10/11:2021✔Belgian Synergrid technical requirements for grid-connected solar inverters and power generation systems, covering grid protection, anti-islanding, voltage and frequency limits, and safe operation with the electricity distribution network. , CE Certified ✔Meets essential EU safety, health, and environmental protection standards., EN 50549 Compliant ✔Fulfills EU grid connection rules for low-voltage and medium-voltage PV inverters., EN 50549-1✔Confirms that the inverter complies with the European standard for connecting power-generating equipment to low-voltage distribution networks, including requirements for grid protection, voltage and frequency control, and safe grid operation., EN 50549✔EN 50549✔ is the European grid connection standard for generators and energy storage systems., G98✔Confirms that the solar inverter or energy storage system meets UK Engineering Recommendation G98 requirements for connecting fully type-tested generation equipment up to 16 A per phase (approximately 3.68 kW per phase) to public low-voltage electricity networks., G99✔UK Engineering Recommendation G99 defines technical requirements for connecting solar inverters, battery energy storage systems and other generation equipment to public electricity distribution networks in Great Britain., IEC 61000-6-1/2/3/4✔Confirms that the energy storage system meets EU electromagnetic compatibility for immunity + low emissions in both commercial and industrial sites., IEC 62040-1✔IEC 62040-1✔ is the international safety standard for uninterruptible power systems (UPS)., IEC 62477-1✔IEC 62477-1✔ is the international safety standard for power electronic converter systems and their equipment., IEC 62619✔IEC 62619✔ is the international safety standard for rechargeable lithium batteries used in industrial applications., IEC/EN 62109-1&2✔Confirms that the solar inverter complies with international and European safety standards for power conversion equipment used in photovoltaic systems, covering general electrical safety, protection against electric shock, fire hazards and inverter-specific safety requirements., NTS 631✔Spanish technical standard verifying that grid-connected solar inverters and power generation systems meet the requirements of EU Regulation 2016/631, including grid stability, frequency response and reactive power control., RD647:2020✔Spanish Royal Decree establishing technical requirements for connecting electricity generation systems, including solar PV inverters, to the Spanish power grid in accordance with EU grid codes., RoHS & REACH Compliant ✔Free from hazardous substances and compliant with EU chemical regulations., TÜV Rheinland Approved ✔Independently tested for quality, safety, and performance by TÜV Rheinland., UNE 217002:2020✔Spanish technical standard defining test procedures for grid-connected solar inverters, covering DC current injection, overvoltage generation and anti-islanding protection to support safe connection to Spain's electricity distribution network., VDE 0126-1-1✔Confirms compliance with the German standard for automatic grid disconnection and anti-islanding protection, ensuring that solar and hybrid inverters safely disconnect from the public low-voltage grid during grid faults or power outages., VDE Grid Code ✔Certified to German and EU grid connection standards (VDE-AR-N 4105/4110)., VDE-AR-N 4105:2018✔German technical standard specifying grid connection, protection, anti-islanding and power quality requirements for solar inverters and energy storage systems connected to low-voltage electricity networks in Germany., VDE-AR-N 4105:2026-03German technical standard specifying grid connection, protection, anti-islanding and power quality requirements for solar inverters and energy storage systems connected to low-voltage electricity networks in Germany.

Safety & Compliance Information
Installation, commissioning, electrical connection and maintenance must be carried out by qualified personnel in accordance with the manufacturer's instructions and applicable local regulations. Read and follow all product-specific safety warnings and installation instructions before installation or operation. For exact technical specifications, safety instructions and compliance documentation, refer to the manufacturer's documentation available in the Product Datasheet and Downloads section. For further assistance, contact 3Buy Solar.

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NEOVOLT logo – hybrid inverter and solar battery energy storage brand

Neovolt is a smart solar energy storage brand specialising in LiFePO4 battery storage, hybrid inverters, residential energy storage systems and complete solar energy solutions for residential and commercial PV projects. The brand focuses on integrated solar technology where solar panels, hybrid solar inverters, solar battery storage, intelligent energy management and backup power work together to maximise self-consumption, energy independence and long-term savings.

The Neovolt portfolio includes solar batteries, energy storage systems, single-phase and three-phase hybrid inverters, battery management systems (BMS), monitoring devices and installation accessories for professional solar installers, electricians, EPC contractors, solar PV suppliers, solar distributors and solar wholesalers in Europe.

Neovolt solutions are suitable for home energy storage, backup power, solar self-consumption, residential PV installations, light commercial applications and complete solar battery kits, giving installers a flexible product range for building efficient and scalable solar energy storage systems.

More about Neovolt on the official manufacturer page.

Manufacturer
Bytewatt Technology Co., Ltd.
No. 137, West ShiHu Road, Wuzhong District, Suzhou, Jiangsu 215100, China
Tel: +86 180 1268 7058
Website: www.neovoltess.com

European Contact
Suzhou Bytewatt Technology Co., Ltd. – European Market Enquiries
Tel: +86 137 7123 9754
Contact: Neovolt Official Contact Page

“For professional solar installers, Neovolt offers a practical approach to hybrid PV and battery storage integration. Its single-phase and three-phase energy storage solutions help simplify system design, installation and commissioning while providing flexible options for residential and light commercial projects. With integrated energy management, remote monitoring and expandable storage configurations, Neovolt helps installers deliver reliable systems, reduce installation complexity and support long-term customer satisfaction.”

— Professional Solar Installer

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