The Story
The Pylontech US5000 is a 48V 4.8kWh Lithium Iron Phosphate (LiFePO₄) battery module engineered specifically for residential and light-commercial solar energy storage. Built around Pylontech's own in-house LiFePO₄ cells and a fully integrated Battery Management System (BMS), it delivers 4,560Wh of usable capacity at 95% depth of discharge — significantly more real-world energy than older lead-acid or NMC alternatives of comparable size. With a design life exceeding 15 years and a cycle rating of over 6,000 charge/discharge cycles at 25 °C, the US5000 is the definitive building-block for scalable UK solar self-consumption, peak-shaving, and grid-backup systems. Its standard 19-inch rack-mount form factor (442 × 420 × 161 mm) slots neatly into any compliant battery cabinet, and up to 16 modules can be paralleled in a single string — reaching 72.96 kWh without any additional hub hardware.
🔴 Installer & Regulatory Requirements
- Installation must be carried out by a competent electrician; connection to the AC grid requires a DNO notification and compliance with G98/G99 where a battery inverter is involved.
- The US5000 is rated IP20 — it is strictly an indoor product and must never be installed in outdoor, unprotected, or damp environments.
- Operating temperature range for charging is 0 °C to 55 °C; discharging is permitted from −10 °C to 55 °C. Do not install in unheated outbuildings where temperatures routinely fall below these thresholds.
- If the battery is to be stored rather than immediately commissioned, it must be charged to the correct state of charge every six months to prevent cell degradation.
- All wiring, fusing, and earthing must comply with BS 7671 (18th Edition) and the manufacturer's installation manual. Refer to the Pylontech US5000 User Manual before beginning any installation.
🟠 Compatibility & System Design Notes
- The US5000 requires a compatible 48V hybrid or battery inverter to function; it is not a standalone power supply. Always verify your inverter model against the official Pylontech Inverter Compatibility List before purchase.
- When mixing Pylontech battery models within the same string, the master battery priority order is: US5000 > UP5000/US3000C/US2000C > US3000/US2000. Never mix LV and HV series modules.
- A Pylontech LV-HUB is required to connect more than one string of up to 16 modules in parallel (up to 5 strings per LV-HUB, giving a maximum of 80 modules / ~384 kWh per LV-HUB).
- Communication is via RS485 or CAN bus; ensure the inverter's firmware supports Pylontech BMS protocol and that the correct communication cable is used between modules and inverter.
🟢 Why LiFePO₄ Chemistry Matters
Unlike NMC or LCO lithium chemistries, Lithium Iron Phosphate (LiFePO₄) has an inherently more stable molecular structure. Its thermal runaway threshold is approximately 600 °C — roughly double the ~270–300 °C threshold of NMC cells. This makes LiFePO₄ the chemistry of choice for indoor residential installations where fire safety is paramount. The trade-off is a slightly lower energy density, but the US5000's compact 19-inch module format demonstrates that Pylontech has minimised this disadvantage through cell engineering and pack design.
Pylontech's proprietary Battery Management System is embedded inside every US5000 module — no external BMS unit is required. It provides real-time cell-level monitoring of voltage, current, temperature and state of charge, with active protection against over-charge, over-discharge, short circuit, over-temperature, and excessive current. A built-in pre-charge (soft-start) function limits the inrush current spike when an inverter powers up against a cold battery, protecting both the BMS and the inverter's input stage.
The US5000's 48V modular architecture allows a homeowner to start with a single 4.8 kWh module and expand by adding units as budget or energy needs grow — no system redesign required. Up to 16 modules can be connected in a single parallel string, reaching 76.8 kWh nominal (72.96 kWh usable) without any additional hub hardware. For larger commercial systems, the Pylontech LV-HUB enables multi-string configurations extending to hundreds of kWh.
The US5000 is rated for more than 6,000 full charge/discharge cycles at 25 °C, with a 15+ year design life. Cycling once daily, this equates to over 16 years of active service before capacity falls to 80% of nominal — the industry-standard end-of-life threshold. Combined with a 95% depth of discharge, the US5000 extracts far more usable energy per cycle than lead-acid alternatives (typically limited to 50% DoD), dramatically reducing the effective cost per kWh delivered over the product's lifetime.
Pylontech specifies a recommended charge/discharge current of 50A (equivalent to approximately 2.4 kW at 48V), with a maximum continuous current of 100A (~4.8 kW). For short-duration surge demands, the US5000 can deliver 101–120A for up to 15 minutes (Peak 1) and 121–200A for up to 15 seconds (Peak 2) — providing genuine backup capacity for high-inrush loads such as heat pumps, motor start-up, and EV chargers when paired with a suitably sized inverter.
The US5000's 442 × 420 × 161 mm (W×D×H) 19-inch rack form factor is a deliberate design choice: it aligns with standard IT and electrical cabinet dimensions, simplifies cable management, and allows multiple units to be stacked vertically using Pylontech's optional stacking brackets. The buckle-fixing system accelerates installation and reduces the risk of racking errors. At 38 kg (US5000) or 39 kg (US5000-B), the module is manageable for a two-person team without lifting equipment.
The US5000 communicates via RS485 and CAN bus, and is compatible with more than 35 leading inverter brands including Victron Energy, Sungrow, SolarEdge, Growatt, Deye, Foxess, GivEnergy, Solax, and many more. This open-protocol approach means the battery integrates natively with inverter BMS protocols, allowing the inverter to read live SOC, cell temperatures, and alarm states — enabling more accurate charge/discharge scheduling and longer battery life through intelligent charge management.
🟢 Typical Use Cases & System Applications
- Solar Self-Consumption: Store midday solar surplus and use it during morning and evening peak-demand periods, reducing grid import and maximising your solar investment.
- Time-of-Use / Peak Shaving: Charge from the grid during cheap-rate periods (e.g. Octopus Go, Economy 7) and discharge during peak-tariff windows to reduce electricity bills.
- Grid Backup / Blackout Protection: When paired with a compatible hybrid inverter with EPS (Emergency Power Supply) functionality, the US5000 provides seamless transfer to battery power during grid outages.
- Virtual Power Plant (VPP): Some energy suppliers allow battery owners to participate in demand-response programmes, earning revenue by exporting stored energy to the grid during periods of high demand.
Technical Specifications
| General | |
| Manufacturer | Pylon Technologies Co., Ltd. (Pylontech) |
| Model | US5000 |
| Chemistry | Lithium Iron Phosphate (LiFePO₄) |
| Application | Residential / Light-Commercial BESS |
| Electrical | |
| Nominal Voltage | 48 Vdc |
| Nominal Capacity | 4,800 Wh (4.8 kWh) |
| Usable Capacity | 4,560 Wh (4.56 kWh) |
| Depth of Discharge | 95% |
| Charge Voltage Range | 52.5 – 53.5 V |
| Discharge Voltage Range | 44.5 – 53.5 V |
| Recommended Charge/Discharge Current | 50 A |
| Maximum Continuous Current | 100 A |
| Peak Current — Level 1 | 101 – 120 A @ 15 minutes |
| Peak Current — Level 2 | 121 – 200 A @ 15 seconds |
| Short-Circuit Current / Duration | <4,000 A / 2 ms |
| Communication Ports | RS485, CAN |
| Physical | |
| Dimensions (W × D × H) | 442 × 420 × 161 mm |
| Weight | 38 kg (US5000) / 39 kg (US5000-B) |
| Form Factor | Standard 19-inch rack mount (4U) |
| IP Rating | IP20 (indoor installation only) |
| Cooling | Natural convection (passive) |
| Environmental & Lifetime | |
| Operating Temperature — Charge | 0 °C to 55 °C |
| Operating Temperature — Discharge | −10 °C to 55 °C |
| Shelf / Storage Temperature | −20 °C to 60 °C |
| Humidity | 5% – 95% RH (non-condensing) |
| Altitude | <4,000 m |
| Design Life | 15+ years @ 25 °C |
| Cycle Life | >6,000 cycles @ 25 °C |
| System Configuration | |
| Max Modules Per String | 16 (no LV-HUB required) |
| Max Strings Per LV-HUB | 5 |
| Max System Capacity (with LV-HUB) | ~384 kWh |
| Certifications | |
| Standards | IEC62619, IEC63056, CE, UN38.3, UL1973, UKCA |
Frequently Asked Questions
Details & Craftsmanship
Every detail has been carefully considered to bring you the perfect product.
Details & Craftsmanship
Every detail has been carefully considered to bring you the perfect product.
Description
The Pylontech US5000 is a 48V 4.8kWh Lithium Iron Phosphate (LiFePO₄) battery module engineered specifically for residential and light-commercial solar energy storage. Built around Pylontech's own in-house LiFePO₄ cells and a fully integrated Battery Management System (BMS), it delivers 4,560Wh of usable capacity at 95% depth of discharge — significantly more real-world energy than older lead-acid or NMC alternatives of comparable size. With a design life exceeding 15 years and a cycle rating of over 6,000 charge/discharge cycles at 25 °C, the US5000 is the definitive building-block for scalable UK solar self-consumption, peak-shaving, and grid-backup systems. Its standard 19-inch rack-mount form factor (442 × 420 × 161 mm) slots neatly into any compliant battery cabinet, and up to 16 modules can be paralleled in a single string — reaching 72.96 kWh without any additional hub hardware.
🔴 Installer & Regulatory Requirements
- Installation must be carried out by a competent electrician; connection to the AC grid requires a DNO notification and compliance with G98/G99 where a battery inverter is involved.
- The US5000 is rated IP20 — it is strictly an indoor product and must never be installed in outdoor, unprotected, or damp environments.
- Operating temperature range for charging is 0 °C to 55 °C; discharging is permitted from −10 °C to 55 °C. Do not install in unheated outbuildings where temperatures routinely fall below these thresholds.
- If the battery is to be stored rather than immediately commissioned, it must be charged to the correct state of charge every six months to prevent cell degradation.
- All wiring, fusing, and earthing must comply with BS 7671 (18th Edition) and the manufacturer's installation manual. Refer to the Pylontech US5000 User Manual before beginning any installation.
🟠 Compatibility & System Design Notes
- The US5000 requires a compatible 48V hybrid or battery inverter to function; it is not a standalone power supply. Always verify your inverter model against the official Pylontech Inverter Compatibility List before purchase.
- When mixing Pylontech battery models within the same string, the master battery priority order is: US5000 > UP5000/US3000C/US2000C > US3000/US2000. Never mix LV and HV series modules.
- A Pylontech LV-HUB is required to connect more than one string of up to 16 modules in parallel (up to 5 strings per LV-HUB, giving a maximum of 80 modules / ~384 kWh per LV-HUB).
- Communication is via RS485 or CAN bus; ensure the inverter's firmware supports Pylontech BMS protocol and that the correct communication cable is used between modules and inverter.
🟢 Why LiFePO₄ Chemistry Matters
Unlike NMC or LCO lithium chemistries, Lithium Iron Phosphate (LiFePO₄) has an inherently more stable molecular structure. Its thermal runaway threshold is approximately 600 °C — roughly double the ~270–300 °C threshold of NMC cells. This makes LiFePO₄ the chemistry of choice for indoor residential installations where fire safety is paramount. The trade-off is a slightly lower energy density, but the US5000's compact 19-inch module format demonstrates that Pylontech has minimised this disadvantage through cell engineering and pack design.
Pylontech's proprietary Battery Management System is embedded inside every US5000 module — no external BMS unit is required. It provides real-time cell-level monitoring of voltage, current, temperature and state of charge, with active protection against over-charge, over-discharge, short circuit, over-temperature, and excessive current. A built-in pre-charge (soft-start) function limits the inrush current spike when an inverter powers up against a cold battery, protecting both the BMS and the inverter's input stage.
The US5000's 48V modular architecture allows a homeowner to start with a single 4.8 kWh module and expand by adding units as budget or energy needs grow — no system redesign required. Up to 16 modules can be connected in a single parallel string, reaching 76.8 kWh nominal (72.96 kWh usable) without any additional hub hardware. For larger commercial systems, the Pylontech LV-HUB enables multi-string configurations extending to hundreds of kWh.
The US5000 is rated for more than 6,000 full charge/discharge cycles at 25 °C, with a 15+ year design life. Cycling once daily, this equates to over 16 years of active service before capacity falls to 80% of nominal — the industry-standard end-of-life threshold. Combined with a 95% depth of discharge, the US5000 extracts far more usable energy per cycle than lead-acid alternatives (typically limited to 50% DoD), dramatically reducing the effective cost per kWh delivered over the product's lifetime.
Pylontech specifies a recommended charge/discharge current of 50A (equivalent to approximately 2.4 kW at 48V), with a maximum continuous current of 100A (~4.8 kW). For short-duration surge demands, the US5000 can deliver 101–120A for up to 15 minutes (Peak 1) and 121–200A for up to 15 seconds (Peak 2) — providing genuine backup capacity for high-inrush loads such as heat pumps, motor start-up, and EV chargers when paired with a suitably sized inverter.
The US5000's 442 × 420 × 161 mm (W×D×H) 19-inch rack form factor is a deliberate design choice: it aligns with standard IT and electrical cabinet dimensions, simplifies cable management, and allows multiple units to be stacked vertically using Pylontech's optional stacking brackets. The buckle-fixing system accelerates installation and reduces the risk of racking errors. At 38 kg (US5000) or 39 kg (US5000-B), the module is manageable for a two-person team without lifting equipment.
The US5000 communicates via RS485 and CAN bus, and is compatible with more than 35 leading inverter brands including Victron Energy, Sungrow, SolarEdge, Growatt, Deye, Foxess, GivEnergy, Solax, and many more. This open-protocol approach means the battery integrates natively with inverter BMS protocols, allowing the inverter to read live SOC, cell temperatures, and alarm states — enabling more accurate charge/discharge scheduling and longer battery life through intelligent charge management.
🟢 Typical Use Cases & System Applications
- Solar Self-Consumption: Store midday solar surplus and use it during morning and evening peak-demand periods, reducing grid import and maximising your solar investment.
- Time-of-Use / Peak Shaving: Charge from the grid during cheap-rate periods (e.g. Octopus Go, Economy 7) and discharge during peak-tariff windows to reduce electricity bills.
- Grid Backup / Blackout Protection: When paired with a compatible hybrid inverter with EPS (Emergency Power Supply) functionality, the US5000 provides seamless transfer to battery power during grid outages.
- Virtual Power Plant (VPP): Some energy suppliers allow battery owners to participate in demand-response programmes, earning revenue by exporting stored energy to the grid during periods of high demand.
Technical Specifications
| General | |
| Manufacturer | Pylon Technologies Co., Ltd. (Pylontech) |
| Model | US5000 |
| Chemistry | Lithium Iron Phosphate (LiFePO₄) |
| Application | Residential / Light-Commercial BESS |
| Electrical | |
| Nominal Voltage | 48 Vdc |
| Nominal Capacity | 4,800 Wh (4.8 kWh) |
| Usable Capacity | 4,560 Wh (4.56 kWh) |
| Depth of Discharge | 95% |
| Charge Voltage Range | 52.5 – 53.5 V |
| Discharge Voltage Range | 44.5 – 53.5 V |
| Recommended Charge/Discharge Current | 50 A |
| Maximum Continuous Current | 100 A |
| Peak Current — Level 1 | 101 – 120 A @ 15 minutes |
| Peak Current — Level 2 | 121 – 200 A @ 15 seconds |
| Short-Circuit Current / Duration | <4,000 A / 2 ms |
| Communication Ports | RS485, CAN |
| Physical | |
| Dimensions (W × D × H) | 442 × 420 × 161 mm |
| Weight | 38 kg (US5000) / 39 kg (US5000-B) |
| Form Factor | Standard 19-inch rack mount (4U) |
| IP Rating | IP20 (indoor installation only) |
| Cooling | Natural convection (passive) |
| Environmental & Lifetime | |
| Operating Temperature — Charge | 0 °C to 55 °C |
| Operating Temperature — Discharge | −10 °C to 55 °C |
| Shelf / Storage Temperature | −20 °C to 60 °C |
| Humidity | 5% – 95% RH (non-condensing) |
| Altitude | <4,000 m |
| Design Life | 15+ years @ 25 °C |
| Cycle Life | >6,000 cycles @ 25 °C |
| System Configuration | |
| Max Modules Per String | 16 (no LV-HUB required) |
| Max Strings Per LV-HUB | 5 |
| Max System Capacity (with LV-HUB) | ~384 kWh |
| Certifications | |
| Standards | IEC62619, IEC63056, CE, UN38.3, UL1973, UKCA |
Frequently Asked Questions
