Compact & Effortless Setup
The industry's most compact battery, its high-density design (35% above average) and ultra-lightweight (<30kg) modules allow for fast, hassle-free, one-person installation.
Residential Battery Energy Storage System (BESS)
Ultimate Safety for your battery
Welcome to the future of home energy management with the YES-EU Home BESS our Residential energy storage system, a system designed to safely and efficiently power your life. As a high-quality, green solution, the home BESS represents the industry’s most compact residential battery, offering a sleek, energetic profile perfectly suited for modern households. Whether you are looking to maximize solar self-consumption or leverage dynamic electricity tariffs and Virtual Power Plants (VPP), this system delivers exceptional, long-lasting value.
- Cycles
- 15,000
- Per module
- <30 kg
- Weatherproof
- IP66
YES-EU Home BESS — The most compact residential battery in industry
Why Home BESS
Five reasons it stands apart
Limitless Scalability
Seamlessly expand from 6.0 kWh to 64 kWh per stack, featuring a universal 80V–1000V operating range and support for up to 10 parallel systems for powerful microgrids.
Unmatched Lifespan & ROI
Engineered to maximize profits from dynamic tariffs and Virtual Power Plants, delivering an incredible 15,000 cycles and backed by a rock-solid 15-year extended warranty.
Bulletproof Resilience
Built for the harshest environments with an IP66 rating that completely blocks rainstorms and operates flawlessly from freezing -20°C winters to blistering 50°C summers.
Instant Upgrades
Advanced passive balancing automatically aligns module charges (~10% SOC/day), letting installers simply stack new batteries onto existing systems, saving 3 to 4 hours of expensive labor.
Using Scenarios
Designed for the way you live
From tight closets to severe winters, every scenario is engineered into the product.
Scenario 01
Tight Spaces installation
Because the Home BESS features a Volumetric Energy Density (VED) that is 35% above the industry average, it maximizes energy storage in minimal space. If you want to install a battery in a narrow garage or a small closet, a standard 4-module system (providing a robust 12 to 13 kWh of energy) stands exceptionally compact at just 0.74 to 0.75 meters tall. Its sleek, hidden-wiring design without decorative panels means it looks clean and unobtrusive anywhere in the house.
Scenario 02
Effortless Upgrades for Growing Families "Easy Retrofit"
Imagine buying an electric vehicle or installing a heat pump a few years after your initial battery purchase and suddenly needing more energy. With traditional systems, aligning the State of Charge (SOC) of old and new batteries is a tedious process that can take a technician 3 to 4 hours. Because the Home BESS features an advanced passive balancing capability of about 10% SOC per day, a technician can simply bring a new 26.5 kg module into your home, stack it directly on top of your existing system, and leave. This saves 3 to 4 hours of on-site labor, translating to roughly 180 to 240 Euros in savings just on retrofit installation costs.
Scenario 03
Surviving Extreme Weather
Not everyone has the indoor space for a battery, meaning it must be installed outdoors where it is exposed to the elements. If you live in an area prone to severe weather, the Home BESS's die-cast aluminum enclosure is IP66-rated and offers 72-hour flood resilience. Furthermore, if you experience freezing winters, the battery operates flawlessly down to -20°C and can discharge without needing an internal heater, keeping your home powered even during freezing winter grid outages.
Scenario 04
Dynamic Tariffs
Energy markets are changing, and homeowners can now make money by buying electricity when it is cheap and selling it back to the grid when it is expensive (dynamic tariffs or VPPs). This requires charging and discharging the battery multiple times a day, which degrades standard batteries quickly. The Home BESS is engineered for extreme longevity, offering 8,000 cycles with its standard cells and up to 15,000 cycles with the premium Kunlun cells. This means you can participate in daily energy trading without voiding your warranty or destroying your battery's lifespan. Even in a standard self-consumption scenario (1 cycle a day), the superior energy throughput of the Home BESS can result in up to 1,764 Euros in additional savings over 10 years compared to competitors, while still retaining 80% of its battery health.
Scenario 05
Peace of Mind
Installing a high-capacity electrical device in a home with children requires absolute trust in the product's safety. The system uses inherently stable LFP chemistry and features an ultra-low failure rate (<1PPB), having passed the industry's most brutal abuse tests, including nail penetration and extreme heat (hot box) tests. Additionally, unlike many smart home devices, the Home BESS's battery pack operates with zero Wi-Fi, completely eliminating any cybersecurity risks or hacking concerns.
Scenario 06
Savings on Initial Installation
Heavy traditional battery systems require two or more specialized installers, driving up your initial invoice. Every single component of the Home BESS, including the battery modules, weighs less than 30 kg (each module is just 26.5 kg) and features integrated handles. This allows a single installer to carry the modules down a flight of stairs and easily click them together. This lightweight, no-fuss design saves approximately 60 to 95 Euros per hour on labor, cutting total installation costs significantly. Over the entire lifespan of the product, the reduced logistics, installation, and maintenance efforts can save you up to 154 to 194 Euros per kWh.
For Installers
Advantages for installers
One-Person Installation
Every component, including the individual 26.5 kg battery modules, weighs under 30 kg and comes with integrated handles. This ultra-lightweight design enables a single installer to carry and set up the entire system without a helper, saving at least 300 Euros a day (or 60 to 95 Euros per hour) in labor costs.
Zero-Friction Assembly
The system is built for an ultimate installation experience with no side screws needed between modules and no decorative panels to attach. It also utilizes a hidden wiring design, making the physical installation exceptionally quick, clean, and straightforward.
"Stack and Leave" Retrofitting
Traditional battery upgrades require technicians to spend 3 to 4 hours on-site manually aligning the State of Charge (SOC) between old and new batteries. The PR-S4 uses an advanced passive balancing capability of ~10% SOC per day, allowing installers to simply stack the new module on top and leave, saving 3 to 4 hours of expensive on-site labor (roughly 180 to 240 Euros).
Simplified Training & Procurement
The battery is designed as a "One SKU fits all" solution that works for both residential and commercial (C&I) setups. Because the installation mode is exactly the same for both scenarios, it completely streamlines procurement and saves massive amounts of time and cost in training installers.
Reduced Logistics & Storage Costs
The modules are packed in highly compact dimensions (600×400 mm) that are fully compatible with standard Euro pallets. This standardized design cuts storage and logistics costs by over 20% (saving roughly 2.55 to 3 Euros per kWh).
Highly Versatile Placement
The system's exceptionally small footprint only requires a minimum clearance of 10 cm from the wall. When paired with its IP66 weatherproof rating and optional wall mounting, installers have the ultimate flexibility to easily place the system indoors, outdoors, or in very tight, low-clearance environments.
Product configurator
Find your ideal Home BESS
Answer five quick questions and we'll help you size the right configuration.
Regardless of the setup, a minimum clearance of 10 cm is required on the left side of the wall.
YES-EU Home BESS features an IP66 Protection Class and a durable die-cast aluminum enclosure, meaning it can be installed outdoors with ease. It is entirely protected against rainstorms, features 72-hour flood resilience, and can charge or discharge in extreme temperatures from -20℃ to 50℃ without needing an internal heater.
Products
Specifications
44.8V / 75.2Ah / 3.3kWh
Modular configuration: Module × 2~19 in Series; Max 4 stacks in parallel.
| Module in series | 2S | 3S | 4S | 5S | 6S | 7S | 8S | 9S | 10S | 11S | 12S | 13S | 14S | 15S | 16S | 17S | 18S | 19S |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Nominal Energy / kWh | 6.74 | 10.11 | 13.48 | 16.84 | 20.21 | 23.58 | 26.95 | 30.32 | 33.69 | 37.06 | 40.43 | 43.80 | 47.17 | 50.53 | 53.90 | 57.27 | 60.64 | 64.01 |
| Rated Energy / kWh | 6.37 | 9.55 | 12.73 | 15.92 | 19.10 | 22.29 | 25.47 | 28.65 | 31.84 | 35.02 | 38.20 | 41.39 | 44.57 | 47.76 | 50.94 | 54.12 | 57.31 | 60.49 |
| System Nominal Voltage / V | 89.6 | 134.4 | 179.2 | 224 | 268.8 | 313.6 | 358.4 | 403.2 | 448 | 492.8 | 537.6 | 582.4 | 627.2 | 672 | 716.8 | 761.6 | 806.4 | 851.2 |
| System Output Voltage / V (Vcell 3.0~3.55V) | 84~99.4 | 126~149.1 | 168~198.8 | 210~248.5 | 252~298.2 | 294~347.9 | 336~397.6 | 378~447.3 | 420~497 | 462~546.7 | 504~596.4 | 546~646.1 | 588~695.8 | 630~745.5 | 672~795.2 | 714~844.9 | 756~894.6 | 798~944.3 |
| System Current / A | 78.4~9 | 117.6~ | 156.8~ | 196~24 | 235.2~ | 274.4~ | 313.6~ | 352.8~ | 392~49 | 431.2~ | 470.4~ | 509.6~ | 548.8~ | 588~74 | 627.2~ | 666.4~ | 705.6~ | 744.8~ |
| Operating Voltage / V (Vcell 2.8~3.55V) | 9.41 | 149.1 | 198.8 | 8.5 | 298.2 | 347.9 | 397.6 | 447.3 | 7 | 546.7 | 596.4 | 646.1 | 695.8 | 5.5 | 795.2 | 844.9 | 894.6 | 944.3 |
| System Size (W*D*H) | 530*315*486 | 530*315*617.5 | 530*315*749 | 530*315*880.5 | 530*315*1012 | 530*315*143.5 | 530*315*275 | 530*315*406.5 | 530*315*538 | 530*315*669.5 | 530*315*801 | 1360*315*1143.5 | 1360*315*1143.5 | 1360*315*1275 | 1360*315*1275 | 1360*315*1406.5 | 1360*315*1406.5 | 1360*315*1538 |
| Weight / kg | 75.1 | 104.9 | 134.7 | 164.5 | 194.3 | 224.1 | 253.9 | 283.7 | 313.5 | 343.3 | 373.1 | 409.4 | 439.2 | 469 | 498.8 | 528.6 | 558.4 | 588.2 |
| Charge / discharge power / kW | 5.21 | 7.81 | 10.42 | 13.02 | 15.62 | 18.23 | 20.83 | 23.44 | 26.04 | 28.64 | 31.25 | 33.85 | 36.46 | 39.06 | 41.66 | 44.27 | 39.31 | 41.50 |
| Cell configuration in module | 14S1P |
| Module configuration | Module * 2~19 in Series; Max 4 stacks in parallel |
| Max Charge/Discharge Current | 62A |
| Environment temperature range | -20~50℃ |
| Optimal operating temperature | 15℃~30℃ |
| Storage Conditions | 30℃~60℃ / 7 days | -20℃~45℃ / 6 months | 5%-95%RH |
| Room Temperature Calendar Life (25°C ± 2°C) | 10 years, 15 years extendable |
| Room Temperature Cycle Life (25°C ± 2°C) | ≥15000 cycles (Kunlun cell, 25℃, 0.5C/0.5C) |
| Dimension | Module: W530*D315*H131.5mm; HVB: W530*D315*H166mm |
| Cooling | Natural cooling |
| Altitude | ≤3000m |
| Communication between module and PCS | CAN/RS485 |
| Parallel connection | Max. 4 (without DCDC); Max 10P with DCDC Converter |
| Safety Certification | UN38.3 / IEC62619 / VDE2510 / IEC62477 / EMC / ISO 13849 PLd |
| IP Rating | IP66 |
Power your home, your way
Ready to bring the Home BESS into your home?
Talk to our European team for a tailored configuration, installation and lifetime service.
European-rooted, technology-driven. Accelerating the energy transition through integrated electric transport and storage solutions since 1969.
- Headquarters · Switzerland
- info@yes-eu.com
- +41 00 000 00 00