InstaGen BMS Battery Management System For 5kWh V2 Battery Storage Modules
InstaGen BMS Battery Management System For 5kWh V2 Battery Storage Modules additional 1InstaGen BMS Battery Management System For 5kWh V2 Battery Storage Modules additional 2

£478.32 ex VAT£573.98 inc VAT

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Product features

  • **BMS unit only**
  • Control unit for InstaGen V2 5kWh modules
  • Smart system monitoring
  • Advanced safety protection
  • Seamless stack integration
  • Supports multiple InstaGen battery modules
  • Optimised for solar storage
  • Durable, long-lasting design
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Description

Please note, this is the BMS unit only. Additional system components must be purchased separately for a complete InstaGen setup.

The InstaGen BMS Battery Management System, also referred to as the "control box", is the essential control unit for InstaGen’s V2 5kWh battery storage modules, providing intelligent monitoring, protection and communication across the entire energy storage stack. Engineered for reliability and long-term performance, this BMS ensures every module operates safely, efficiently, and in perfect balance - maximising usable capacity and extending overall battery lifespan.

Designed as the central “brain” of the InstaGen home energy storage system, the BMS continuously tracks cell voltage, temperature, current flow, and system status. It automatically regulates charge and discharge cycles, protects against electrical faults, and keeps every battery module operating within safe parameters. This results in stable performance whether the system is storing excess solar energy, powering essential loads, or working with your time-of-use tariff.

Fully compatible with InstaGen’s modular low-voltage V2 (5.12kWh) battery units, this BMS enables flexible system expansion to suit your ever expanding power needs. Whether you are installing a single battery or building a larger stack of up to four modules, the BMS ensures seamless integration and coordinated operation. Its robust design, straightforward plug-and-play installation, and dependable performance make it a vital component of any InstaGen energy storage setup.

  • Essential control unit for InstaGen V2 5kWh battery modules
  • Smart monitoring of voltage, temperature & current
  • Advanced safety protection against over-charge, over-discharge & short circuits
  • Cell balancing technology for improved lifespan & consistent performance
  • Seamless integration with modular InstaGen battery stacks
  • Supports system expansion up to four stacked modules
  • Reliable communication with inverters & system controllers
  • Optimised for home solar storage & off-peak energy management
  • Robust, long-lasting design for domestic energy systems
  • Control Box Dimensions: W: 640mm x H: 240mm x D:145mm
  • Control Box Weight: 11kg

What Is InstaGen?

InstaGen is a modular home energy battery storage system designed to store excess solar power or off-peak electricity for use whenever you need it. Using safe and long-lasting lithium iron phosphate (LFP) battery modules, the system helps homeowners reduce energy costs, increase self-consumption, and gain greater resilience during power outages. With flexible sizing and smart monitoring, InstaGen battery storage offers a reliable, future-ready solution for modern UK homes.

Experience the LV-(5-20)S-G2 series - a deep-cycle, high-capacity LFP battery system engineered for safer operation, long service life, and a streamlined user experience in modern home energy storage.

Key Features

  • Scalable Storage Capacity: Each InstaGen inverter can support a single battery tower ranging from 5.12 kWh to 20.48 kWh, with up to four stackable modules.
  • Enhanced Safety Design: Built with LFP chemistry and equipped with module-level fire protection, alongside safeguards for overvoltage, undervoltage, overcurrent, overtemperature, and undertemperature, plus an integrated DC breaker.
  • Installer-Friendly Setup: IP66-rated for indoor or outdoor installation, featuring quick-connect fittings and a stackable architecture that removes the need for complex inter-module wiring.
  • High-Quality Performance: Offers a recommended 90% depth of discharge and delivers up to 8,000 cycles at 25°C and 0.5C, ensuring long-term reliability.
  • Reliable Assurance: Backed by a 10-year warranty and certified to IEC 62619, UN 38.3, and IEC 61000-6-1/-3 standards.

InstaGen Battery Stack Components Required:

  • 1x BMS
  • 1-4x Battery Modules
  • 1x Battery Base
  • 1x Inverter-to-Battery Cable Pack

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DELIVERY INFORMATION

Fast, reliable UK delivery

  • FREE UK delivery (2–3 working days) on orders over £99 exVAT (order before 4pm)*.
  • Orders under £99 exVAT are charged £6 inc VAT (£5 exVAT).
  • Need it quickly? Choose from our Next Working Day & Saturday delivery options below (order before 2pm).

Delivery options & rates

Delivery OptionDelivery TimeCost
Standard Delivery2-3 working days£6.00 (£5.00 exVAT)
FREE Standard Delivery (orders over £99 exVAT)*2-3 working daysFREE
Next Working Day Delivery (order before 2pm)Next working day£9.99 (£8.33 exVAT)*
Next Working Day by 12pm  (order before 2pm)Next working day£20.00 (£16.67 exVAT)
Next Working Day by 10:30am  (order before 2pm)Next working day£21.60 (£18.00 exVAT)
Saturday Delivery  (order before 2pm Friday)    Next working day£20.00 (£16.67 exVAT)
Northern Ireland, Highland  & Islands Delivery  3-5 working days£9.99 (£8.33 exVAT)

Important: Orders placed after 2pm on Friday (or over the weekend) are processed on Monday for next working day delivery. Next Day & Saturday Delivery options NOT available on all products.

*FREE Standard & Next day delivery available on select products and will be clearly shown on the product page.


What to expect

  • We dispatch Monday - Friday (excluding public holidays).
  • Once dispatched, you’ll receive tracking information (where available).
  • If delivery is delayed for any reason, we’ll contact you as soon as possible with an updated estimate.

Please note: we cannot be held responsible for missed deliveries. Customers are advised to check their spam or junk folder to ensure tracking information and estimated delivery details are received.


Specialist product delivery

Some products require specialist handling:

  • For Portable power please allow up to 4 working days for delivery.
  • Solar panels are shipped via our £100 pallet delivery service.
  • In some cases a third-party supplier may fulfil your order directly.

Delivery areas & restrictions

  • Northern Ireland, Scottish Highlands & Channel Islands: please contact us for shipping rates.
  • Portable power to Northern Ireland: we can’t currently ship these items due to insurance issues with the courier.
  • International delivery: unfortunately we do not currently offer international shipping.

Questions, problems, or returns?

RETURN POLICY

Last updated May 23, 2024

Thank you for your purchase, we hope you are happy with it.

However, if you are not completely satisfied with your purchase for any reason, you may return it to us for a full refund, store credit, or an exchange; please see below for more information on our returns policy.

RETURNS

If you find you have received the wrong or damaged item(s), you need to contact us within 7 days of receipt of goods. Any time after this you are responsible for returning the goods at your own cost following the standard returns process.

All returns must be postmarked and in writing within fourteen (14) days of the purchase date. All returned items must be in a new, unopened and unused condition, with all original tags and labels attached.


RETURN PROCESS

To return an item, please click the ‘Download Returns Form’ below and complete all data fields. You can then email this to our team once completed.
Place your item(s) securely in its original packaging along with the returns form.
Please note that the RMA# on the returns address is your original order number; please ensure to reference this on the returns address, as per below.
You are now ready to mail your return to the following address:

Attn: Returns
RMA #/Order No -
Eco WizardUnderfloor Wizard Ltd t/a ECO Wizard
Beechfield House
Winterton Way
Macclesfield
Cheshire
SK11 0LP
United Kingdom

We ask that all customers when returning products send the goods via a trackable courier service. Underfloor Wizard Ltd t/a ECO Wizard will not be held responsible for goods which do not arrive at our premises.

Please note, you will be responsible for all return shipping charges, unless in the instance of damaged/faulty goods received in which case we can issue you with a returns label to cover the cost of postage.

Download Returns Form

REFUNDS

After receiving your return and inspecting the condition of your item, we will process your return or exchange. Please allow at least seven (7) days from the receipt of your item to process your return or exchange. Refunds may take 1-2 billing cycles to appear on your credit card statement, depending on your credit card company. We will notify you by email when your return has been processed.

Faults on installed products: 

If a product that has been installed develops a fault, please contact us, do not uninstall the product yourself. We will arrange for an engineer or technical support from the brand to assist with diagnosing the fault. Once the fault has been confirmed we can then arrange for the necessary next steps to occur.


EXCEPTIONS

The following items cannot be returned or exchanged:

  • opened box, damaged, missing or incomplete items cannot be returned.
  • items that have been installed.


QUESTIONS
If you have any questions concerning our return policy, please contact us at: returns@ecowizard.co.uk

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