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Tower-type online UPS

ET1-3K Tower Online UPS — Built-in LiFePO4 Battery

Name: ET1-3K Tower Online UPS — Built-in LiFePO4 Battery
Brand: Highidea Power

The ET1-3K is a tower-type online (double-conversion) UPS with an integrated Class-A LiFePO4 battery, built on DSP digital control and high-frequency PWM. It delivers clean, regulated power with 0 ms transfer between mains, battery and bypass, a ≥30-minute full-load runtime, and optional cloud monitoring — ideal for servers, medical and precision equipment, and unattended remote sites.

Capacity

1 kVA/800 W · 2 kVA/1600 W · 3 kVA/2400 W

Topology

Online double-conversion (VFI)

Transfer Time

0 ms (true online, zero transfer)

Chemistry

Class-A LiFePO4 (built-in)

Full Load Runtime

>30 minutes at full load (per feature text)

Request a quote Open manual

CE-LVD scope available2-year UPS warranty

Confirm host, battery, runtime and document scope for the exact configuration

Wide 110–300 VAC input with buil…

Wide 110–300 VAC input with built-in 3-/4-level lightning protection and active PFC for harsh grids.

Automatic power-on when mains re…

suited to unattended base stations and remote sites.

Integrated Class-A LiFePO4 battery

float life >10 years, >1,200 cycles, maintenance-free;

Full-digital DSP control for fas…

Full-digital DSP control for fast, precise regulation and strong load capacity.

Technical data

ET1-3K specifications.

Compare the electrical, battery, monitoring, environmental and compliance data for this product family.

01Electrical

Capacity1 kVA/800 W · 2 kVA/1600 W · 3 kVA/2400 W

TopologyOnline double-conversion (VFI)

Input Voltage220 VAC rated; range (172–268) ±7 VAC

Input Frequency50/60 Hz auto-sensing; range (45–55)/(55–65) ±0.5 Hz

Output Voltage220 VAC ±3% (adjustable 230/240)

Output Frequency50/60 Hz ±5% (mains normal); ±1% (on battery)

Output WaveformSine wave, THD <3% linear / <8% non-linear

Power Factor Output0.8

OverloadLine mode 130% ≥20s; battery mode 120% ≥20s

Transfer Time0 ms (true online, zero transfer)

Topology ExtrasActive PFC, high-frequency PWM, 3-/4-level lightning protection

02Battery

ChemistryClass-A LiFePO4 (built-in)

ConfigurationIntegrated, maintenance-free; 12S (1K, 36V) / 16S (2K,3K, 48V)

Charge1K: 42.8V/2A · 2K,3K: 57V/3A; 8–10h to 90%

Cycle Life>1,200 cycles

Float Life>10 years

Full Load Runtime>30 minutes at full load (per feature text)

Runtime TableET1K: 100W=188 · 200W=110 · 400W=55 · 600W=37 | ET2K: 100W=200 · 200W=160 · 400W=95 · 600W=60 · 800W=45 · 1000W=40 | ET3K: 100W=290 · 200W=240 · 400W=135 · 600W=87 · 800W=63 · 1000W=58 · 2000W=30

BMSBuilt-in battery management & protection

03Management & Monitoring

Standard InterfaceRS232

OptionalRS485 / Modbus, dry contacts, SNMP cloud card

Cloud MonitoringMobile APP + web platform (optional card)

Shutdown SoftwareWindows / Linux / VM / NAS auto-shutdown

AlertsPower-failure & fault alarms, remote power on/off

04Environment & Mechanical

Operating Temperature−10°C to +40°C (battery not below 0°C)

Relative Humidity20%–90%, non-condensing

Storage Temperature−15°C to +45°C

Altitude<1000 m no derate; derate 1% per +100 m above

Conformal CoatingThree-proofing (moisture / dust / salt-mist)

Dimensions WeightTower net W×H×D: 1K 145×220×355mm/8.6kg · 2K,3K 190×318×433mm/19.6–22kg

05Compliance & Warranty

CECE-LVD to EN IEC 62040-1:2019/A2:2025; verify the ordered model against the six certificate model lists

WarrantyUPS main unit: 2 years

Request the full user manual & datasheet

Selection guide

Is this the right model for you?

Quick pointers to confirm fit, or steer you to a sibling model.

Choose the ET1-3K when its power range, format and operating role match your application.
Provide capacity, input/output voltage, runtime, installation format and destination-market document requirements for final model selection.

Recommended for

Where the ET1-3K performs.

Servers & IT rooms

ET1-3K can be configured for this application; final sizing depends on the load, runtime and site conditions.

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Medical & precision equipment

ET1-3K can be configured for this application; final sizing depends on the load, runtime and site conditions.

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Industrial computers

ET1-3K can be configured for this application; final sizing depends on the load, runtime and site conditions.

View solution

FAQ

Frequently asked questions

What should I provide to select the right ET1-3K?

Share the load in watts or VA, input and output voltage, required runtime, installation format, site conditions and destination market. Our team will match the product, battery and monitoring options to the application.

Can I request a datasheet for the ET1-3K?

Yes. Contact sales with the required rating and destination market to receive the applicable datasheet, manual and compliance-document list.

Start a project

Configure a ET1-3K for your site.

Tell us the load, voltage, runtime, site conditions and destination. Sales will confirm the host, battery and configuration-specific document scope.

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