PET1101+Li 1000VA lithium UPS 48v single phase double conversion
Lithium Battery UPS | 1000VA/1000W | 48VDC | 1-20A Charging | BMS
Prostar PET1101+Li is a 1000VA lithium UPS for users who need efficiency, lifespan, and power protection in environments with power fluctuations. It supports 48V LiFePO4 batteries, uses online double conversion, delivers 0ms transfer time, outputs pure sine wave, and includes intelligent battery management. This 1000VA lithium UPS supplies power for servers, network equipment, security systems, telecom devices, and industrial control applications.
Power Instability & Traditional VRLA Limitations in Critical Operations
Data edge nodes, medical diagnostic units, and industrial automation control systems require power quality. Mains grid fluctuations—voltage sags, surges, harmonic distortion, and blackouts—cause risks:
Data Corruption & Hardware Failure
Switchover delays in offline or line-interactive UPS systems produce micro-cuts. These micro-cuts reset servers or industrial PLCs.
High Total Cost of Ownership (TCO)
Legacy Lead-Acid (VRLA) batteries have a lifespan of 2–3 years, weigh more, recharge slowly, and react to temperature changes.
Space & Weight Constraints
Traditional tower UPS units with lead-acid batteries weigh more and occupy space. This creates problems for remote or space-limited deployments.
Product Key Features
Online Double Conversion Technology (VFI)
The inverter supplies power continuously. The UPS isolates the load from grid disturbances. It protects against outages, voltage changes, surges, and noise.
Unity Power Factor
1000VA lithium UPS operates at PF=1.0. It delivers 1000W active power. It supports modern IT and electronic equipment at full load capacity.
48V LiFePO4 Lithium Battery Compatible
This UPS works with 51.2V LiFePO4 battery systems and communicates with BMS. It extends battery lifespan, increases reliability, and lowers TCO.
Zero Transfer Time (0ms)
Online UPS switches between mains and battery instantly. This prevents downtime and maintains operation of devices.
Pure Sine Wave Output
The UPS produces AC power with THDv <3% for linear loads. It powers electronics, servers, and communication equipment without disruption.
Smart Battery Management System (BMS)
The system includes over-charge, over-discharge, over-current, short-circuit, and temperature protection. It increases battery safety, reliability, and service life.
Adjustable Charging Current (1A-20A)
You can control charging through UPS settings. You can match charging performance to battery capacity and application.
Why Choose a 1000VA Lithium UPS Instead of Traditional UPS?
A lithium UPS offers advantages over conventional VRLA UPS systems.
| Comparison | Lead-Acid UPS | PET1101+Li Lithium UPS |
| Battery Type | VRLA | LiFePO4 |
| Battery Voltage | Usually 24V/36V | 48VDC |
| Cycle Life | Around 300-500 cycles | Thousands of cycles |
| Maintenance | Frequent replacement | Low maintenance |
| Charging Speed | Slow | Faster charging capability |
| Energy Density | Lower | Higher |
| Battery Management | Basic | Intelligent BMS Protection |
Technical Specifications
General Specifications
| Parameter | Specification |
| Model | PET1101+Li |
| Capacity | 1000VA / 1000W |
| Topology | Online Double Conversion |
| Phase | Single Phase |
| Form Factor | Tower |
| Dimension (D×W×H) | 290×145×238 mm |
| Net Weight | 5.2 kg |
Input and Output Performance
| Parameter | Specification |
| Input Voltage Range | Nominal Voltage ±15% |
| Frequency Range | 50Hz: 44-56Hz / 60Hz:54-66Hz |
| Input Power Factor | ≥0.99 |
| Input THDi | <6% |
| Output Voltage | 208/220/230/240VAC Selectable |
| Voltage Regulation | ±1% (Battery Mode) |
| Output Waveform | Pure Sine Wave |
| Transfer Time | 0ms |
| Battery Frequency Accuracy | 50Hz/60Hz ±0.1% |
| Crest Factor | 3:1 |
Battery and Communication
| Parameter | Specification |
| Battery Type | LiFePO4 Lithium / Lead Acid |
| Nominal Battery Voltage | 48VDC (51.2VDC LiFePO4) |
| Charging Current | 5A Default, Adjustable 1-20A |
| Charging Mode | CC/Floating or CC/CV/Floating |
| Battery Protection | Over-charge, Over-discharge, Over-current, Short Circuit, Temperature Protection |
| Communication Ports | USB / RS232 / RS485 |
| Smart Slot | SNMP / Dry Contact Optional |
| BMS Protocol | Pylontech RS485 & CANbus |
Application Scenarios
Edge Computing
The UPS supplies backup power to edge servers. It delivers pure sine wave and zero transfer delay.
Medical Equipment & Diagnostics
48V UPS protects laboratory devices from micro-cuts and noise.
Telecom & Remote Network Cabinets
The 48V DC battery architecture recharges in 2 hours. It operates for 8–10 years in remote enclosures.
Frequently Asked Questions (FAQ)
Why choose a 1000VA lithium UPS over a traditional VRLA UPS?
Can the PET1101+Li online UPS accept both Lithium and Lead-Acid batteries?
How does the PET1101+Li maintain grid clean-power compliance?
Is PET1101+Li a true online UPS?
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| MODEL | PET1101+Li | |
| CAPACITY | 1000VA/1000W | |
| Form Factor | Tower Type | |
| Size, D X W X H (mm) | 290×145×238 | |
| Net Weight (kgs) | 5.2 | |
| INPUT | ||
| Low Line Transfer | 176Vac (Load ≥100%); 176–110Vac (Load 100%–50%); 110Vac (Load ≤50%) | |
| Low Line Recovery | Low transfer voltage + 10 V | |
| High Line Transfer | 300 Vac ±5% | |
| High Line Recovery | 290 Vac ±5% | |
| Frequency Range | 50Hz:44-56Hz or 60Hz: 54-66Hz | |
| Phase | Single Phase, L+N+PE | |
| Power Factor | ≧ 0.99 @ nominal voltage (input voltage) | |
| Harmonic Distortion(THDi) | < 6% | |
| OUTPUT | ||
| Output Voltage | 208/220/230/240VAC (Selectable) | |
| AC Voltage Regulation | ± 1% (Batt. Mode) | |
| Frequency Range(AC Mode) | Synchronized to Mains | |
| Frequency Range (Batt. Mode) | 50Hz or 60Hz ± 0.1% | |
| Current Crest Ratio | 3:1 | |
| Harmonic Distortion(THDv) | <3% THD (Linear Load), <6% THD (Non-linear Load) | |
| Transfer Time | AC to Battery | 0ms |
| Battery to AC | 0ms | |
| Inverter to Bypass | 4ms | |
| Waveform | Pure Sine Wave | |
| Overload Capacity | AC Mode: Battery Mode: 30mins @102%-110% load 1min @102%-110% load 10mins @110%-130% load 10sec @110%-130% load 30sec @130%-150% load 3sec @130%-150% load 200ms @>150% load 200ms @>150% load | |
| EFFICIENCY | ||
| AC Mode | > 93% | |
| Battery Mode | > 91.2% | |
| BATTERY | ||
| Battery Type | LiFePO4 Lithium / Lead-Acid | |
| Nominal Battery Voltage | 48VDC (51.2VDC for LiFePO4) | |
| Charging Current | 5A(Default),1A-20A | |
| Charging Voltage | 56.4VDC (14.1V * N) | |
| Charging Algorithm | 2-stage (CC/Floating) or 3-stage (CC/CV/Floating) | |
| BMS Protection | Over-charge, Over-discharge, Over-current, Short-circuit, Over-temp, Under-temp | |
| Integrated Functions | Auto Restart, Self-Test Function, Smart Battery Management | |
| ECO | ||
| Input Voltage Range | Nominal Voltage ± 15% | |
| Input Frequency Range | 50Hz / 60Hz ± 4Hz | |
| ENVIRONMENT | ||
| Ambient Temperature | 0°C – 40°C | |
| Operation Humidity | 20%-95% (Non-condensing) | |
| Storage Temperature | -15~60℃ (Excluding battery) | |
| Altitude | 1000 m (derate for higher altitudes up to 4000 m) | |
| Noise Level | Less than 50dBA @ 1 Meter | |
| COMMUNICATION | ||
| Communication Interface | USB, RS232, RS485 | |
| BMS Protocol Support | Native support for Pylontech RS485 and CANbus protocols | |
| Expansion Slot | Smart Slot for optional SNMP / Dry Contact card | |
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