KSTAR 1KVA 900W ONLINE UPS

TYPE: UPS
SKU:

Brand New1 Year Warranty

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The Kstar 1kVA / 900W True Online Double-Conversion UPS is an industrial-grade power protection and clean energy delivery system engineered to shield mission-critical workstations, high-end gaming battlestations, network servers, and sensitive lab electronics from dirty power and abrupt outages. Featuring advanced DSP micro-controller technology and true zero-transfer-time (0ms) double-conversion topology, it continuously regenerates pure, flawless sine wave AC power—completely isolating connected equipment from severe utility voltage sags, brownouts, surges, frequency shifts, and electrical noise. Outfitted with a high 0.9 output power factor, wide input voltage tolerance, intelligent multi-mode LCD status interface, smart ECO energy-saving mode, and high-capacity internal valve-regulated lead-acid batteries, the Kstar 1kVA UPS guarantees rock-solid uptime and uncompromised electrical stability even on unstable local power grids and generator transitions.

RATED CAPACITY

1000VA / 900W

TOPOLOGY

Online Double-Conv.

TRANSFER TIME

0 ms (Instant)

OUTPUT WAVEFORM

Pure Sine Wave

Specifications

Model Series	Kstar 1kVA / 900W High-Frequency Online Double-Conversion UPS (Tower Model)
UPS Architecture & Processing	True Online Double-Conversion (AC-DC / DC-AC) with Advanced DSP Digital Signal Controller
Rated Output Capacity & Power Factor	1000VA / 900W Real Power \| High 0.9 Output Power Factor (Delivers More Usable Wattage)
Transfer Time	Zero Milliseconds (0 ms) Seamless Transfer (Utility to Battery & Inverter to Bypass)
Nominal Input Voltage & Window	208 / 220 / 230 / 240 VAC \| Wide Input Voltage Range: 110 – 300 VAC (Reduces Unnecessary Battery Wear)
Input Frequency Range	40 – 70 Hz (Auto-Sensing 50/60 Hz; Fully Compatible with Standby Diesel & Gasoline Generators)
Output Voltage Regulation & Waveform	Pure Sine Wave Output \| Precision Voltage Regulation: ±1% (THDv < 2% Linear Load)
Battery Bank Configuration	Internal 24V DC / 36V DC Bus (Equipped with High-Rate Sealed Maintenance-Free VRLA AGM Batteries)
Recharge & Charging Management	Smart 3-Stage Battery Charging (Recovers to 90% in ~4 Hours; Extends Chemical Battery Lifespan)
Overload Capacity	105% – 125% for 1 Minute \| 125% – 150% for 30 Seconds \| >150% Instant Bypass Transfer
Output Sockets & Protection	Multi-Outlet Backup Sockets (Universal / IEC Outlets) + Integrated High-Joule Surge & Lightning Suppression
Monitoring Interface & Ports	Multi-Functional Front Blue-Backlit LCD Display + USB / RS232 Communication Ports (Optional SNMP Slot)
Chassis Form Factor & Weight	Rugged Industrial Steel Tower Casing in Stealth Black \| Approx. 9.5 – 11.5 kg
Included Quality Assurance & Support	Full 100% Resistive Load Bank Stress Test, Inverter Calibration Audit & Dedicated Support

Highlights

True Online Double-Conversion topology continuously rectifies AC utility power to DC and reconstructs a flawless AC wave, providing absolute electrical isolation from grid disturbances.
Instantaneous zero-millisecond (0ms) transfer time ensures sensitive equipment like high-end PC power supplies, NAS enclosures, and servers never experience rebooting or dropping off.
Pure sine wave output with ultra-low harmonic distortion (±1% voltage stability) guarantees optimal efficiency and quiet operation for Active PFC computer power supplies.
High 0.9 output power factor delivers a full 900W of actual usable load capacity out of its 1000VA rating, supporting power-hungry GPU and CPU rendering loads.
Extremely wide input voltage range (110VAC to 300VAC) allows the UPS to regulate wild power fluctuations without constantly draining internal battery reserves.
Seamless generator compatibility handles unstable generator frequencies and dirty harmonic distortions effortlessly without tripping offline.
Clear, comprehensive front LCD panel displays real-time load percentage, battery capacity bar, input/output voltage, frequency, and operating modes at a single glance.
Advanced Digital Signal Processing (DSP) technology delivers rapid hardware-level error correction, precise inverter control, and enhanced overall operational reliability.
ECO Operating Mode boosts overall system efficiency up to 97% during stable grid conditions, reducing electricity consumption and ambient heat generation.
Intelligent multi-stage battery charger monitors temperature and cell voltages to prevent overcharging, achieving a rapid 90% recovery time in approximately 4 hours.
Cold-start capability allows you to boot your PC and networking gear directly from the UPS battery during a complete blackout without available mains electricity.
Backed by dedicated after-sales customer support, ensuring guidance on system load sizing, software shutdown configurations, and complete operating peace of mind.

Protect your valuable workstation and hardware setup with the Kstar 1kVA / 900W Online UPS, featuring true double-conversion technology, 0ms transfer time, pure sine wave output, 0.9 power factor, wide input voltage tolerance, and intuitive LCD monitoring.

Guide How to Submit a Warranty Claim

To initiate any warranty or Dead On Arrival (DOA) claim, contact our support team directly on WhatsApp. Please provide a clear explanation of what happened along with detailed photos or a video demonstrating the issue and clearly showing that the serial numbers and warranty seals remain intact.

Claim Processing Time: Warranty replacements or repairs take up to 10 business days if replacement units or parts are available locally in stock. If the item must be ordered and imported directly from the US, processing can take up to 4 months.
Refunds: Refunds are available for eligible claims where repair or replacement is not possible. For full details on eligibility and terms, please check our Refund Policy section.

General Warranty & Condition Policy

Brand New, Open Box & Used Items: All product tiers are subject to the exact same warranty coverage criteria, strict testing procedures, and exclusion conditions. Open Box and Used items carry identical defect protections as Brand New units under a shorter, designated warranty duration specified on the product page and purchase invoice.
Power Protection Requirement (UPS): Due to extreme grid instability and voltage fluctuations (180V to 250V), all systems, individual components, and electronics must be powered exclusively through a verified, quality Uninterruptible Power Supply (UPS). Any damage resulting from electrical spikes, brownouts, lightning, physical impact, liquid exposure, or misuse is strictly excluded.
Strict No-Tampering Policy: Opening any unit—including user-accessible hardware like prebuilts, laptops, graphics cards, and power supplies—or breaking factory/store warranty seals immediately voids all coverage. Any routine maintenance, cleaning, repasting, or upgrades must be performed directly by our service center.

Pre-Built PCs, Custom Builds & Laptops

Pre-Built & Custom Gaming PCs: Every individual internal component is covered under its respective manufacturing warranty. The complete PC must remain connected to a verified quality UPS at all times. Opening the chassis, modifying/removing parts, self-upgrades, repasting, or third-party servicing strictly voids the entire system warranty.
Laptops: Covers internal motherboard, processor, dedicated GPU, display panel, keyboard, trackpad, and internal power delivery against manufacturing defects. Must be charged using original adapters connected to stable, surge-protected power.
Batteries & Adapters: Laptop batteries and original power bricks are covered against complete hardware failure for their specified term.
Laptop Exclusions: Opening the casing, self RAM/SSD upgrades, unauthorized repasting, dropped units, cracked screens, liquid spills, or using unverified 3rd-party chargers immediately voids the warranty.

Core PC Components

Processors (CPUs): Covered against factory defects. Void if damaged physically (bent/broken pins, cracked PCB), overclocked, underclocked, or damaged due to improper/outdated motherboard BIOS firmware.
Motherboards: Covered against manufacturing defects. Void in cases of physical damage, bent socket pins, Ethernet/LAN static shock, power surges, or trace scratches from improper mounting.
Graphics Cards (GPUs): Covered against factory defects. Requires pairing with a reliable, tier-rated PSU (Tier B- or higher) using original native cables and an anti-sag GPU support bracket. Void if opened, disassembled, repasted, overclocked, or undervolted.
RAM (Memory): Covered against factory defects. Void if modules show physical damage or failure caused by manual over-volting/overclocking beyond standard XMP/EXPO profiles.
Storage (SSDs / HDDs): Covered against controller and NAND defects. Void if the drive exceeds the manufacturer Total Bytes Written (TBW) limit or shows physical port/casing damage.
Power Supply Units (PSUs): Covered against internal component failure under standard operating parameters. Burnt input stages and grid-level electrical surges from unprotected direct lines are not covered.

Displays, Cooling & Accessories

Monitors (Standard LCD/IPS & OLED): Both standard and OLED panels require 4 or more dead/stuck pixels to qualify for warranty service. OLED panels include burn-in and image retention coverage under normal operating conditions with built-in panel care features kept active. Physical cracks, pressure marks, and scratches are not covered.
Liquid Coolers (AIOs): Covered for Dead On Arrival (DOA) pump/fan failure and manufacturing leaks, provided the unit was installed according to official guidelines without hose tension, modifications, or physical damage.
Air Coolers: Covered exclusively under Dead On Arrival (DOA) terms within 48 hours of delivery (fan motor failure, factory defects).
Peripherals (Keyboards, Mice, Headsets): Covered for internal hardware and connectivity defects under normal operational wear. Excludes cosmetic damage, frayed cables, switch wear from excessive force, and liquid spills.
Uninterruptible Power Supplies (UPS): Fully covered against internal board, inverter, and battery manufacturing defects during the warranty period.
DOA-Only Items (Report within 48 hours): PC cases, monitor arms, webcams, microphones, speakers, routers, internal/external cables, desk accessories, chairs, desks, RGB extensions/cables, and mini LCD screens.
Mouse Pads: Consumable accessory; sold with no warranty.

    
      Policy Full Value Refund Eligibility
    
Coverage Period: Refunds are available throughout the entire warranty period under strict qualifying criteria:
        
Dead On Arrival (DOA): The unit arrives defective (reported within 48 hours), is out of stock, and cannot be replaced or substituted locally.

Unresolvable Warranty Claims: A valid warranty claim occurs where the product cannot be repaired, no exact replacement exists, and no suitable substitute is available locally.

Refund Method & Value: All approved refunds are issued exclusively as In-Store Credit for 100% of the original amount paid on your purchase invoice.

7-Day Value Window & Buy-Back Terms

7-Day Full-Value Period: Returning an eligible product without losing any of its original value is strictly available only within the first 7 calendar days from the purchase/delivery date.
No Preference Returns: Refunding or returning an item because you changed your mind, dislike the color/design, or find it does not fit your setup is strictly prohibited, even within the first 7 days.
Buy-Back Option (Post 7 Days or Preference): If you want to return a functional item after the 7-day period has passed or due to personal preference, it is not eligible for a standard return. Instead, we will evaluate the product and offer to buy it back from you at a lower, discounted market price based on its current condition and packaging state.

Size Guide

Device	White	Black	Red	Green
Chair	14-14.5	15-15.5	16-16.5	17-17.5
Moniter	14-14.5	15-15.5	16-16.5	17-17.5
Keycaps	14-14.5	15-15.5	16-16.5	17-17.5
CPU	14-14.5	15-15.5	16-16.5	17-17.5
Mouse	14-14.5	15-15.5	16-16.5	17-17.5

KSTAR 1KVA 900W ONLINE UPS

$0.00