BYD Battery-Box is a home LiFePO4 battery renowned for its modularity: you stack modules to fine-tune capacity, and you can expand it later if needed. wendows is an installer: advice, installation and after-sales by our own teams, with subsidies and reduced VAT handled for you.
BYD offers the Battery-Box in several capacities to match your needs and your solar installation. Here are the configurations we install most often in Belgium — sized case by case.
The entry point for storing the surplus of a small solar installation and covering the evenings. Compact configuration, ideal for a flat or a small household.
The most common sizing for a family home fitted with panels: you store during the day to consume in the evening, depending on configuration.
For heavy consumers (heat pump, electric vehicle): you stack BYD modules to aim for broad autonomy, depending on your consumption profile.
Paired with a compatible inverter, the battery can power certain essential circuits during an outage. An option to confirm at sizing.
Beyond capacity, it's the LiFePO4 chemistry and the modularity that make the difference. The brand-specific benchmarks, installed by our teams.
Lithium iron phosphate is prized for its thermal stability and longevity. Cobalt-free, it's a safe and hardy chemistry, well suited to everyday residential storage.
The Battery-Box is assembled from modules: you start with a small capacity and expand as your needs grow. The exact sizing depends on your installation and your consumption.
Manufacturer warranty on the cycles and capacity retention, depending on the range. wendows acts as your relay for any work carried out under warranty.
Charge/discharge power depends on the number of modules and the associated inverter. It's set at sizing to follow your consumption peaks.
High-voltage architecture, designed for efficient DC coupling with compatible hybrid inverters. The choice of coupling is made according to your solar installation.
You add modules to increase capacity later, without replacing everything. Handy to start small and then keep pace with your needs.
* Valeurs indicatives selon la gamme et la configuration. Les performances et garanties exactes dépendent du modèle, du vitrage et des dimensions — confirmées lors du métré.
Buying a good battery isn't enough: its performance depends on the sizing and the coupling to the inverter. Our installers fit it to the manufacturer's rules, and we handle the warranty and after-sales directly.
BYD isn't our only string. Depending on your solar installation and your budget, other brands may suit you better. Compare them, then we decide together at sizing.
An overview of the storage brands we install in Belgium: LiFePO4 and lithium-ion, by capacity and by budget.
See all battery brands → vs BYDModular LUNA2000 battery that naturally pairs with a Huawei inverter. The go-to when the installation is already in the Huawei ecosystem.
Compare with Huawei LUNA → vs BYD13.5 kWh pack with built-in backup and control via the Tesla app. Worth considering if you want an all-in-one solution and native grid backup.
Compare with Powerwall → the guideBefore the brand, the principle: understand how a battery stores your solar surplus and cuts your electricity bill.
All about home storage → the chemistryLithium iron phosphate chemistry explains the safety and longevity of the Battery-Box. Understand its strengths before choosing.
Understand LiFePO4 → to combineA battery only makes sense with good solar production. Check the sizing of your panels before adding storage.
See solar panels →When you add a battery to your panels, you're choosing two things: a storage brand and an installer. BYD answers the first with the Battery-Box, a modular LiFePO4 battery that genuinely changes the game: you store the day's surplus to consume it in the evening, and you can expand the capacity later without replacing everything.
The brand is recognised for its lithium iron phosphate chemistry, valued for its stability and longevity. You can start with a modest capacity, then stack modules as your needs evolve — heat pump, electric car — without changing the warranty logic or the coupling.
"An undersized battery empties too fast, an oversized one never fills up: everything comes down to the sizing.
That's where our role as an installer matters. We size the usable capacity according to your real production and consumption, fit it to the manufacturer's requirements and remain your single point of contact for the warranty, the commissioning and the after-sales. No buck-passing between the seller, the manufacturer and the fitter.
One contract, one person in charge. Advice, sizing, ordering the Battery-Box, installation, subsidies and after-sales: everything goes through wendows, from the first call until after the warranty.
On the budget side, the battery is priced mainly according to the chosen capacity and the coupling to the inverter. To get a sense of your project, start from our storage pricing page, then ask for a costed quote: it's the only way to get a fair price, sized to your installation.
The price depends mainly on the chosen capacity, the coupling to the inverter and your existing installation — not just the brand. Here are starting ranges for a BYD installed by our teams, with subsidies deductible afterwards.
See the detailed storage price grid →* Indicative ranges for an installed BYD battery, excluding specific configurations. Precise, costed estimate with your free quote.
It's a modular LiFePO4 battery recognised for the stability and longevity of its chemistry. The appeal: you adapt the capacity by modules and expand it later. As with any storage, the result depends as much on the sizing and coupling as on the battery itself — hence the importance of an installer.
It depends on your solar production and your evening consumption. Generally, we aim for ~5 kWh for a small household, ~10 kWh for a family home, and ~15 kWh or more with a heat pump or electric car. The exact figure is set at sizing, depending on configuration.
Yes. That's the whole point of the modularity: you stack modules to increase capacity later, without replacing the whole unit. Handy to start sensibly and then keep pace with your changing energy needs.
The Battery-Box couples with compatible high-voltage hybrid inverters. If your installation doesn't have one, it needs to be planned for. We check compatibility with your existing equipment during the study.
Depending on the range, the manufacturer warranty can run up to 10 years and covers the cycles and capacity retention. wendows acts as your relay and handles the intervention. The exact terms are specified on your quote.
Reckon from around €4,000 for ~5 kWh and from ~€6,500 for ~10 kWh installed, depending on the coupling to the inverter and your installation. Subsidies and reduced VAT deducted afterwards, depending on your region and your eligibility.
Free on-site survey, recommended range, grants calculated, a single point of contact. Describe your project in under a minute.