PET1103+Li 3kVA lithium UPS 48V online double conversion for pc

Q: Can PET1103+Li work with generators?

Yes. PET1103+Li supports generator compatibility, making it suitable for regions with unstable electricity supply.

Prostar PET1103+Li is a 3kVA lithium UPS for professional PC systems, workstations, network devices, edge computing equipment, and small IT infrastructures that require stable and uninterrupted power protection. This 3kVA lithium UPS uses 48V LiFePO4 lithium battery technology and online double conversion topology. It outputs pure sine wave, transfers at 0 ms, achieves 95% efficiency in double-conversion mode and 98% in ECO mode, and supports 6,000+ cycles at 80% DoD versus 300–500 cycles for lead-acid systems. This lithium battery UPS suits users who need long runtime, lower maintenance, and intelligent power management.

Table of Contents

Critical Power Challenge in Modern Computing Environments

Modern high-performance PCs, multi-GPU AI development workstations, and rack servers use Switch-Mode Power Supplies (SMPS) with Active Power Factor Correction (PFC). Line-interactive UPS units and lead-acid backups fail in these environments due to three systemic vulnerabilities:

Transfer Time Latencies and Waveform Distortion

Line-interactive UPS units introduce a 4ms to 20ms transfer lag during power dips or blackouts. Active PFC PC power supplies trigger an instantaneous low-voltage shutdown within 4ms–8ms. This causes unrecorded data loss, corruption of machine-learning models, or hardware strain.

Rapid Degradation of Lead-Acid (VRLA) Batteries

Valve-Regulated Lead-Acid (VRLA) batteries have 300 to 500 cycles or 2–3 years of service life. In high-density PC environments with ambient thermal load, VRLA cells undergo thermal runaway and capacity degradation. This requires replacements every 2–3 years.

Voltage Fluctuations, Harmonics, and Grid Noise

Commercial electrical grids produce micro-sags, transient surges, frequency drifts, and total harmonic distortion (THD). Unconditioned power erodes semiconductor components inside GPUs and CPUs over time and reduces system longevity.

PET1103+Li double conversion 48V 3kVA lithium UPS for computer

PET1103+Li 3kVA Lithium UPS Architecture

The PET1103+Li 3kVA lithium UPS addresses power anomalies through online double-conversion engineering paired with a 48V lithium iron phosphate (LiFePO4) energy storage matrix.

The system converts AC power to DC and back to AC. This decouples connected PCs from grid fluctuations and delivers a continuous pure sine wave output with 0 ms transfer time.

For professional users, a 3kVA lithium UPS with online double conversion provides higher protection by converting incoming AC power into DC and reconstructing a clean AC output continuously.

The PET1103+Li solves these challenges by combining:

48V lithium battery technology
Online double conversion architecture
High power density design
Intelligent battery management
Long service life energy storage

Feature / Metric	Legacy 3kVA VRLA UPS	PET1103+Li 3kVA Lithium UPS	User Operational Impact
Battery Lifespan	2–3 Years	10+ Years	3x to 4x longer operational life; eliminates frequent battery swaps
Cycle Life (80% DoD)	300 – 500 Cycles	6,000+ Cycles	Resilient against daily cycling and frequent micro-outages
Transfer Time	4ms – 10ms (Line-Interactive)	0 ms (Online Double Conversion)	Guarantees zero crash/reboot on sensitive Active PFC PC power supplies
Weight & Footprint	~15 kg – 25kg (Heavy)	~6.8 kg – 18 kg (Ultra-Light)	60% weight reduction; ideal for rack enclosures and desk setups
Recharge Time (to 90%)	8 – 12 Hours	1.5 – 2.5 Hours	Rapid recovery between back-to-back grid disruptions
Operating Temp Range	20°C to 25°C (Strict)	0°C to 40°C (Wide)	High resilience to ambient heat in server rooms or workstation bays

Unlike UPS systems using VRLA batteries, this lithium UPS system uses LiFePO4 battery technology. It offers 6,000+ cycles at 80% DoD, charges to 90% in 1.5–2.5 hours, operates from 0°C to 40°C, and requires fewer replacements.

The UPS provides 3000VA/3000W capacity, making it suitable for:

High-performance PCs
Gaming and professional workstations
Graphic design computers
Network servers
Communication equipment
CCTV monitoring systems
Industrial control computers

Product Key Features

True Online Double-Conversion Topology

The PET1103+Li functions as a continuous power filter. It rectifies utility AC power to 48V DC to charge the lithium array. A precision inverter generates an AC sine wave with THD < 2% for linear loads. During grid sags or blackouts, the output waveform remains unchanged.

48V LiFePO4 Lithium Battery System

The integrated 48V lithium battery architecture improves reliability and battery performance.

Longer backup lifespan
Better thermal stability
Higher charging efficiency
Reduced replacement frequency

This makes it a reliable 48V lithium UPS for PC and network equipment.

Eco Mode & Dynamic Efficiency Tuning

The PET1103+Li achieves 95% efficiency in double-conversion mode and over 98% in ECO mode. It minimizes heat dissipation and active cooling overhead and lowers energy consumption in continuous operating environments.

Intelligent Charging Management for Longer Battery Life

The built-in intelligent charging system supports:

High-current rapid charging algorithms
Adjustable charging current
Adjustable charging mode through LCD panel
Battery protection management

This helps reduce charging time after power recovery and improves overall battery utilization.

Intelligent Battery Management System (BMS)

An integrated industrial BMS monitors cell-level voltages, currents, state-of-charge (SoC), state-of-health (SoH), and temperatures in real time. The BMS balances cells during charge cycles and prevents overcharge, over-discharge, short circuits, and thermal stress.

Generator Compatible Design

PET1103+Li supports generator input, making it suitable for areas with unstable grids.

Applications include:

Remote offices
Industrial sites
Telecom locations
Backup power systems

Communication Protocol Compatibility

The UPS inverter and BMS exchange data via RS485. Protocols include Pylontech (RS485 and CANbus). The system reports per‑cell voltage, per‑cell temperature, SoC, and alarm flags every 1 second.

Intelligent LCD Monitoring System

The UPS features an advanced LCD interface providing real-time information:

Input voltage
Output voltage
Battery status
Load percentage
Operating mode
Fault information

Users can easily monitor UPS operation without additional software.

The Power Protection Challenge for Modern PCs and IT Equipment

Technical Specifications

General Specifications

Parameter	Specification
Model	PET1103+Li
Capacity	3000VA / 3000W
Topology	Online Double Conversion
Phase	Single Phase
Form Factor	Tower
Dimension (D×W×H)	395×145×222 mm
Net Weight	6.8 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 1-30A
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

Lithium UPS Detail

Single Phase 2kVA-3KVA Online Lithium Battery UPS Rear

1. External Battery Connector	2. Emergency Power Off(Option)	3. RS485 Port for BMS
4. USB Port	5. AC Output Sockets	6. Grounding
7. Intelligent Slot(for SNMP Card or AS400 Dry Contact)	8. Input Circuit Breaker	9. AC Input Terminal

Application Scenarios

Professional Computing Environment

For companies using expensive computers, CAD workstations, medical computers, and data processing systems, stable power is essential.

PET1103+Li protects:

CPU and workstation hardware
Storage devices
Monitors
Network switches
External equipment

Enterprise Server Backup

Provides clean, regulated online power for mission-critical blade servers, switches, and storage systems (NAS/SAN).

Healthcare & Medical IT

Safeguards lab automation systems, electronic health record (EHR) workstations, and imaging equipment against micro-outages.

Security Monitoring Systems

CCTV systems and surveillance servers must operate continuously.

The lithium UPS ensures:

24/7 monitoring availability
Protection against power interruptions
Stable operation of DVR/NVR systems

Frequently Asked Questions (FAQ)

What makes a 3kVA lithium UPS superior to a traditional lead-acid UPS for PC setups?

A 3kVA lithium UPS offers up to 3x longer battery life (10+ years), faster recharge rates (under 2.5 hours), 60% lower weight, and higher cycle endurance (3,000+ cycles) compared to lead-acid models. When combined with online double-conversion topology, it provides continuous clean energy with zero transfer time lithium power supply performance, ensuring high-power PCs with active PFC power supplies do not crash.

How does the zero transfer time (0 ms) benefit sensitive computer hardware?

Modern PC power supplies equipped with Active Power Factor Correction (PFC) can trip during the micro-delay (4–10 ms) typical of line-interactive UPS systems. The PET1103+Li provides a constant online double-conversion stream where the inverter directly powers the PC at all times, making grid disconnects completely invisible to connected devices.

Is LiFePO4 battery chemistry safe for office and home workstation environments?

Yes. Lithium Iron Phosphate (LiFePO4) is the safest commercial lithium-ion chemistry available. It features an elevated thermal runaway threshold, eliminates fire risk under puncture or overcharge conditions, and operates alongside an integrated battery management system (BMS) to monitor voltage, current, and temperature parameters constantly.

What is a 3kVA lithium UPS?

A 3kVA lithium UPS is an uninterruptible power supply with a 3000VA capacity that uses lithium battery technology instead of traditional lead-acid batteries. It provides longer battery life, faster charging, and improved energy efficiency.

How long can a 3kVA lithium UPS provide backup power?

Backup time depends on connected load power consumption and battery configuration. Lower loads receive longer runtime, while higher loads reduce backup duration.

Can PET1103+Li work with generators?