LiFePO4 Battery Energy Storage Solutions for Home & Business
Rakour delivers LiFePO4 battery energy storage systems from 5.12kWh to multi-MWh — engineered for homes, businesses, and beyond.
The foundation of modern energy independence — how BESS works and why it matters
A battery energy storage system charges during low-demand or high-generation periods, then discharges power on demand. At its core, a BESS converts AC electricity to DC for storage, then inverts it back when needed. This cycle is managed automatically, with no manual switching required.
Every Rakour battery energy storage system integrates a built-in battery management system (BMS) that monitors cell voltage, current, and temperature in real time. It controls charge and discharge cycles, executes cell balancing, and triggers protection against overcharge, over-discharge, and thermal faults — keeping the system safe across its full service life.
Grid instability and rising electricity costs have made energy storage systems essential rather than optional. From solar self-consumption to backup power and peak demand reduction, a BESS enables users to control when and how they consume energy. Rakour designs battery energy storage systems for both residential and commercial environments, offering scalable output from 5.12 kWh up to multi-hundred-kWh configurations.
Rising electricity costs and grid pressure are making energy storage a smart, strategic investment
Renewable energy storage demand is accelerating worldwide. Solar generation now exceeds grid absorption capacity during peak hours in many markets, creating curtailment losses. Batteries solve this by absorbing surplus generation and releasing it when the grid needs it most. IEA data shows global energy storage capacity is projected to grow from 45 GW in 2023 to over 228 GW by 2035.
Time-of-use tariffs mean electricity can cost two to three times more during peak hours than off-peak periods. A properly sized battery energy storage system lets homeowners and businesses charge at low rates and discharge during expensive peaks, directly reducing monthly electricity bills without reducing consumption. This dynamic alone drives strong ROI in most markets.
Xiamen Rakour Technology Co., Ltd. is a specialist manufacturer of battery energy storage systems, focused on LiFePO4 chemistry across both low-voltage residential and high-voltage commercial product lines. With certified products shipped globally and OEM/ODM capabilities, Rakour serves installers, distributors, and system integrators who need reliable, scalable energy storage hardware.
Your application scenario determines everything — system voltage, capacity, and inverter compatibility
Residential energy storage focuses on self-consumption and backup power. A typical home system pairs with a low-voltage inverter at 48V nominal, storing solar energy generated during daylight for evening use. Rakour's LV series covers 5.12 kWh to 16 kWh per unit, with up to 15 units in parallel — giving households up to 240 kWh of scalable capacity without a system redesign.
Commercial energy storage targets businesses with consistent daytime loads: factories, retail centers, offices, and light industrial facilities. These applications require higher continuous power output, tighter grid compatibility, and often demand charge reduction as a primary value driver. Rakour's HV series operates at 232V–980V and pairs directly with high-voltage inverters for C&I deployments.
Understanding the difference between LV and HV architecture is the first step toward correct system sizing
Rakour's LV series operates at a nominal 51.2V with a working range of 46.4V–57.6V. This matches the input specs of most standard residential hybrid inverters. LV units are rack-mounted and support up to 15 parallel connections, making capacity expansion straightforward. The low voltage battery architecture suits homes and small commercial sites with inverter systems under 60V DC bus.
The HV series connects 5 to 17 battery modules in series via a BCU (Battery Control Unit), reaching a maximum operating voltage of 980V. This high voltage battery topology reduces cable losses and supports higher continuous discharge currents — up to 200A on the 314Ah HV model. HV systems are engineered for commercial inverters requiring 160V–1000V DC input ranges.
Why lithium iron phosphate chemistry and smart battery management define long-term safety and performance
Lithium iron phosphate battery (LiFePO4) chemistry offers thermal stability that standard lithium-ion cannot match. The iron-phosphate bond does not decompose at high temperatures, eliminating thermal runaway risk under normal operating conditions. Rakour selects LiFePO4 cells across its entire product line, ensuring that both residential and commercial systems meet strict safety benchmarks without compromise.
Rakour LV and HV products achieve ≥6,000 charge-discharge cycles at 90% DOD for standard configurations, with select 280Ah and 314Ah LV models rated at ≥10,000 and ≥11,000 cycles respectively. At one cycle per day, this equals 16–30 years of operational life — far exceeding the typical warranty period and providing predictable long-term value for installers and end users.
The battery management system in every Rakour unit operates at two levels: a slave BMS inside each module monitors individual cell voltage and temperature; a master BMS in the BCU coordinates system-level decisions. Protections include over-discharge, overcharge, over-current, and high/low temperature cutoffs. CAN, RS485, and RS232 communication ports allow real-time monitoring via inverter, PC, or mobile app through built-in Wi-Fi.
These technical parameters directly determine how much usable energy you get — and for how long
Total energy and usable energy are not the same figure. A 16 kWh system at 90% DOD delivers 14.4 kWh of usable power per cycle. Rakour's 314Ah LV model specifies a total energy of 16,077 Wh with 14,469 Wh usable at 90% DOD. Always compare battery capacity on a usable-energy basis, not nameplate capacity, to make accurate system-to-system comparisons.
Cycle life multiplied by usable capacity per cycle equals total lifetime energy output — the real measure of value. Rakour's 280Ah LV unit delivers ≥10,000 cycles, yielding over 129,000 kWh of total lifetime throughput per unit. This figure matters more than upfront cost alone when evaluating the levelized cost of storage for any project.
A battery energy storage system must communicate reliably with its inverter. Rakour units support CAN, RS485, and RS232 protocols, covering the communication standards required by most major inverter brands including Deye. The BCU touch screen displays real-time SOC, voltage, and current — giving installers and operators immediate visibility without additional monitoring hardware.
Start with what you need today — Rakour's architecture lets you expand capacity without replacing existing hardware
Rakour's LV series supports up to 15 units connected in battery parallel, expanding total capacity from a single 5.12 kWh unit to over 240 kWh on one inverter system. Before adding new units, installers must verify that voltage difference between parallel units stays within 1V and that battery production dates fall within the same 12-month window. This prevents capacity imbalance and ensures stable cell balancing across the expanded system.
The HV series scales differently — by stacking 5 to 17 battery modules in series within a single BCU-controlled rack. Each added module increases both voltage and total energy simultaneously. The 51.2V314Ah HV supports up to 10 independent inverters in AC parallel operation, making it suited for commercial sites requiring redundancy or phased power ramp-up without infrastructure changes.
Third-party certification is not optional — it is how Rakour proves product safety before a single unit ships
Rakour battery storage systems carry CE, ROHS, UN38.3, MSDS, and IEC62619 certifications across product lines. CE confirms compliance with European safety and EMC directives. UN38.3 is mandatory for air and sea freight, verifying the battery withstands altitude, temperature shock, vibration, and short-circuit stress without incident. IEC62619 covers safety requirements specifically for secondary lithium battery cells in stationary applications — a standard directly relevant to grid-connected storage.
Before certifications apply, hardware protection is the primary line of defense. Every Rakour unit includes over-discharge, overcharge, over-current, and high/low-temperature cutoff functions within the BMS. The HV series adds a DC fuse and soft-start circuit inside the BCU to prevent inrush current damage during initial energization. These protections operate automatically without user input, removing installation-dependent safety variables.
The LV rack-mount series carries IP20 protection, suitable for enclosed indoor installations. The NSTLV ground-mount series achieves IP54, resisting dust ingress and water splashing for semi-outdoor or garage deployments. Humidity tolerance across all Rakour products is ≤85%RH, with an operational altitude ceiling of 2,000 m — meeting the installation environment requirements of most residential and light commercial sites globally.
The same Rakour hardware supports on-grid, off-grid, and solar-plus-storage configurations — the inverter setting determines the mode
In grid-tied operation, Rakour batteries charge during off-peak hours or from solar panels, then discharge during peak-rate periods to reduce electricity costs. The BMS communicates with the inverter via CAN protocol, enabling automatic time-of-use scheduling. Rakour HV systems support up to six charging and discharging time periods per day when paired with compatible hybrid solar inverters, allowing precise control over when stored energy is consumed or exported.
In off-grid battery mode, Rakour systems operate as the primary power source. The BMS maintains SOC within safe boundaries while the inverter manages load distribution. LV units support seamless switching between grid and off-grid modes — the HV 314Ah series, when paired with Deye SUN-series inverters, achieves grid/off-grid transition in under 10 ms, protecting sensitive equipment from interruption during outages.
Pairing Rakour batteries with PV arrays increases solar battery storage efficiency by absorbing surplus daytime generation rather than exporting it at low feed-in tariff rates. The BCU CAN port connects directly to inverter BMS ports, eliminating third-party communication adapters. Rakour HV systems are validated with Deye SUN-29.9K to SUN-80K inverter series, with wiring diagrams and parameter settings documented in dedicated integration manuals for installer reference.
The financial case for energy storage is measurable — here is how Rakour systems reduce costs across residential and commercial applications
A home battery storage system that stores midday solar generation for evening use can raise self-consumption rates from 30% to over 70%, significantly reducing grid draw during peak-rate hours. With LiFePO4 cycle life of ≥6,000 cycles at 90% DOD, a Rakour LV system operating one full cycle daily delivers more than 16 years of service — spreading the capital investment across a long, predictable depreciation curve that strengthens ROI for homeowners and installers alike.
Commercial electricity tariffs often include demand charges based on peak 15-minute consumption. A Rakour HV battery storage system can discharge strategically during these windows to cap the measured peak, reducing demand charges that typically represent 30%–50% of a commercial energy bill. With usable capacity reaching 102.4 kWh per HV string and up to 4 strings in parallel, businesses can flatten significant load spikes without grid upgrades.
Getting installation right and following Rakour's maintenance schedule protects your investment across the full battery lifespan
Rakour rack-mount LV batteries require a minimum 300 mm clearance on all sides for ventilation and heat dissipation. Units must be installed in environments with humidity ≤85%RH and operating altitude ≤2,000 m. Discharge operates down to –20℃, while charging requires ambient temperatures between 0℃ and 60℃. For battery parallel installations, verify that all units have production dates within 12 months of each other and voltage differences within 1V before energizing the system.
Battery degradation is minimized by following Rakour's storage protocol: batteries held out of service must be maintained at 30%–60% SOC. At ambient temperatures of –10℃ to 25℃, the maximum recommended storage period without recharging is 12 months; at 25℃–35℃, this reduces to 6 months. Shell cleaning requires only a soft dry brush — solvents and corrosive liquids must never contact the enclosure. No internal servicing is required or permitted outside of authorized dealer involvement.
LiFePO4 chemistry degrades gradually rather than abruptly, with capacity declining slowly across thousands of cycles. Rakour's 5-year product warranty covers manufacturing defects and performance thresholds within normal operating conditions. Because cycle life ratings of ≥6,000 to ≥11,000 cycles substantially exceed the warranty period, users can expect continued usable capacity well beyond warranty expiry under normal operating conditions and proper maintenance adherence.
Rakour backs every system with documented warranty terms and supports distributors and brand owners through flexible manufacturing partnerships
All Rakour LV and HV battery storage products carry a standard 5-year warranty covering manufacturing defects and performance failures under normal operating conditions. Warranty claims require that the battery has been installed, operated, and maintained in accordance with the product manual. Unauthorized modifications — including internal disassembly, unapproved parallel configurations, or operation outside specified temperature ranges — void the warranty. Authorized dealers handle warranty claims directly and coordinate replacement or repair logistics.
Rakour provides product documentation including user manuals, installation guides, wiring diagrams, and integration guides for specific inverter pairings such as the Deye SUN series. The BMS WiFi module enables remote diagnostics, allowing dealers to assess fault codes and SOC anomalies without on-site visits. For common issues — including SOC display discrepancies in battery parallel systems — Rakour's troubleshooting guides provide step-by-step resolution procedures that reduce support call volume for downstream partners.
Rakour supports OEM and ODM partnerships for distributors and brand owners requiring custom labeling, firmware branding, or modified product specifications. This includes capacity customization, enclosure color options, and communication protocol adjustments. Partners receive dedicated technical support during integration and access to pre-shipment documentation packages including test reports, certification copies, and MSDS sheets — ensuring smooth customs clearance and market entry across regulated markets globally.
Got questions about BESS sizing, compatibility, or certifications? Find clear answers below.
Low voltage (LV) systems operate at a nominal 51.2V and connect to standard residential inverters with a DC bus under 60V. High voltage (HV) systems stack 5–17 modules in series, reaching up to 980V DC, and pair with commercial-grade inverters requiring 160V–1000V input. LV suits homes; HV suits C&I applications.
Rakour LV series supports up to 15 units in parallel. Before connecting, ensure all units have a voltage difference within 1V and production dates within 12 months. For first-time parallel installations, charge all units to full capacity first to balance the SOC gap and ensure stable long-term performance across the expanded battery system.
Rakour products carry CE, ROHS, UN38.3, MSDS, and IEC62619 certifications depending on model. UN38.3 ensures safe air and sea transport. IEC62619 covers stationary lithium battery safety for grid-connected applications. CE confirms compliance with European directives. Full certification documentation is available upon request for customs clearance and project approval purposes.
Yes. Rakour HV 314Ah systems are validated with Deye SUN-29.9K to SUN-80K inverter series. Communication uses the CAN protocol via the BCU port connected to the inverter's BMS port. Dedicated wiring diagrams and parameter setup guides for Deye integration are included in Rakour's product documentation to ensure correct configuration by installers.
Rakour LV 100Ah and 200Ah models are rated at ≥6,000 cycles at 90% DOD. The 280Ah model achieves ≥10,000 cycles and the 314Ah model ≥11,000 cycles. At one cycle per day, this equals 16 to 30 years of operational service life, significantly exceeding the 5-year product warranty and delivering strong long-term value for both residential and commercial deployments.
Tell us your capacity needs, site type, and inverter brand — we'll recommend the right Rakour system.