# CyberPower OLS4KERT4UA-IEC UPS Double-conversion 4 kVA 3800 W 15 AC outlets

**URL:** https://aio.lv/en/product--cyberpower-ols4kert4ua-iec--10914841
**Data updated:** 2026-01-14 13:05 (EET)
**Category:** UPS
**Manufacturer:** CYBERPOWER
**Manufacturer code:** OLS4KERT4UA-IEC
**EAN:** 4711027791784
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 2 076.49 €
**Prices and availability valid until:** 2026-07-26 23:59
**Price without VAT (21%):** 1 716.11 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--cyberpower-ols4kert4ua-iec--10914841

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 10.07.2026 | free |
| Courier delivery to door | 15.07.2026 | 53.99 EUR |

## Summary description

The CyberPower OLS4KERT4UA-IEC is a double-conversion UPS with a capacity of 4 kVA and 3800 W. It features 15 AC outlets including C13 and C19 types. The sealed lead acid battery provides typical backup times of 6 minutes at full load and 15 minutes at half load. Designed for rackmount or tower use, it is housed in a durable metal casing and complies with CE and RoHS standards.

## Long description

The CyberPower OLS4KERT4UA-IEC UPS Double-conversion 4 kVA 3800 W 15 AC outlets is a line-interactive, double-conversion uninterruptible power supply designed for professional IT environments. With a rated output capacity of 4 kVA (3800 W) and 15 AC outlets including mixed C13 and C19 types, this unit delivers continuous clean power and temporary battery backup. The sealed lead acid battery provides typical autonomy of approximately 6 minutes at full load and around 15 minutes at half load. The UPS can be deployed in either rackmount or tower configurations and is built into a durable black metal housing that meets CE and RoHS compliance.
Advantages
The double-conversion topology provides online voltage regulation and isolation from input disturbances, ensuring consistent sine-wave output and zero transfer time to battery support. Multiple AC outlets allow simultaneous connection of servers, network equipment and peripheral devices without additional power distribution units. The sealed lead acid battery design reduces maintenance needs and simplifies replacement procedures compared with flooded battery types. The robust metal enclosure and flexible rack/tower mounting options make the unit adaptable to rack cabinets or office floors.
Suitable for
Server rooms and data closets requiring continuous clean power.
Network equipment such as switches, routers and firewalls.
Storage arrays and backup systems that need short-term battery support during outages.
Mixed IT racks where multiple device outlet types (C13/C19) are needed.
Key specifications
Output power capacity: 4 kVA / 3800 W.
Number of AC outlets: 15 (including C13 and C19 types).
Battery type: sealed lead acid.
Typical runtime: ~6 minutes at full load; ~15 minutes at half load.
Form factor: rackmount or tower convertible.
Chassis colour: black metal housing.
Compliance: CE and RoHS.
USB connectivity: 1 × USB 2.0 port.
Weight: 55 kg.
How to use
Install the UPS in a suitable rack space or place it on a stable surface in tower orientation following the manufacturer’s mounting instructions. Connect critical equipment to the provided AC outlets, prioritising servers and network devices for uninterrupted operation. Plug the UPS mains input to a dedicated, properly grounded AC supply. Use the USB 2.0 port to connect to a management station for monitoring and orderly shutdown configuration if required. Ensure the battery is charged before putting the load on the UPS for the first time and perform regular self-test cycles as recommended by the manufacturer.
Usage recommendations
Place the unit in a well-ventilated environment, maintain ambient temperature within the range specified by the manufacturer, and avoid exposure to moisture or conductive dust. Schedule periodic battery checks and replacement according to runtime requirements and operating conditions. When connecting high inrush devices, verify the total combined load does not exceed the 3800 W rating and distribute loads across outlet groups as appropriate.

## Specifications

### Ports & interfaces

| Feature | Value |
|---|---|
| AC outlets quantity | 15 AC outlet(s) |
| USB 2.0 ports quantity | 1 |
| Serial interface type | RS-232 |
| Serial ports quantity | 3 |
| RS-232 ports | 3 |
| Power plug | Terminal |
| AC outlet types | C19 coupler, Terminal, C13 coupler |
| Serial interface | Yes |
| Emergency Power Off (EPO) connector | Yes |
| USB port | Yes |
| SmartSlot | Yes |
| USB port type | USB Type-B |

### Battery

| Feature | Value |
|---|---|
| Battery technology | Sealed Lead Acid (VRLA) |
| Battery recharge time | 4 h |
| Typical backup time at half load | 15 min |
| Typical backup time at full load | 6 min |
| Hot-swap battery | Yes |
| Charging current | 4 A |

### Design

| Feature | Value |
|---|---|
| Product colour | Black |
| Form factor | Rackmount/Tower |
| Rack capacity | 4U |
| LED indicators | Y |
| Control type | Buttons |
| Housing material | Metal |
| Cooling type | Active |
| Display type | LCD |
| Built-in fan | Yes |

### Weight & dimensions

| Feature | Value |
|---|---|
| Weight | 55 kg |
| Height | 171 mm |
| Width | 433 mm |
| Depth | 661 mm |

### Operational conditions

| Feature | Value |
|---|---|
| Operating altitude | 0 - 3000 |
| Operating relative humidity (H-H) | 0 - 95 |
| Storage temperature (T-T) | -15 - 45 |
| Operating temperature (T-T) | 0 - 40 |
| Storage relative humidity (H-H) | 0 - 95 |
| Non-operating altitude | 0 - 15000 |

### Certificates

| Feature | Value |
|---|---|
| Compliance certificates | CE, RoHS |

### Other features

| Feature | Value |
|---|---|
| Nominal input voltage | 230 |
| Overload protection | Yes |
| Quantity of delay expansion units (max) | 4 |

### Features

| Feature | Value |
|---|---|
| Emergency Power Off (EPO) | Yes |
| Output power capacity | 4 kVA |
| Surge energy rating | 1335 J |
| Heat dissipation | 1777 BTU/h |
| Input frequency | 50/60 |
| Maximum current | 20 A |
| Detachable power cord | Yes |
| Output power | 3800 W |
| Power source type | AC |
| Power Factor Correction (PFC) type | Active |
| Crest factor | 3:1 |
| EMI/RFI noise filtering | Yes |
| Input operation voltage (max) | 300 V |
| Input operation voltage (min) | 110 V |
| Output operation voltage (min) | 200 V |
| Output operation voltage (max) | 240 V |
| Output frequency | 50/60 |
| ECO mode | Yes |
| Socket circuit breaker | Yes |
| Number of input phases | 1 |
| Number of output phases | 1 |
| Input power factor | 0.99 |
| Output power factor | 0.95 |
| Waveform | Pure sine |
| Output voltage regulation | 1 |
| Output frequency regulation | 0.5 |
| UPS topology | Double-conversion (Online) |
| Total Harmonic Distortion (THD) (linear load) | 1.5 % |
| Total Harmonic Distortion (THD) (non-linear load) | 2 % |
| Efficiency (ECO mode) | 98 % |

### Logistics data

| Feature | Value |
|---|---|
| Country of origin | China |

### Sustainability

| Feature | Value |
|---|---|
| Sustainability compliance | Yes |

### Packaging data

| Feature | Value |
|---|---|
| Package weight | 73000 g |
| Package depth | 890 mm |
| Package height | 404 mm |
| Package width | 575 mm |
| Package type | Box |

## FAQ

### How much does the CyberPower OLS4KERT4UA-IEC UPS cost, and is it available for purchase?

The price is 2,076.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 1 pcs. are in stock, and you can place your purchase right now with delivery across Latvia and Europe or choose pickup at the Riga collection point. We offer favorable purchase terms, including the option to split the payment into convenient monthly installments. Availability and price are updated in real time, so we recommend placing your order in advance.

### If I order this product today, when will I receive my order?

If you place your order today, delivery will be as fast and convenient as possible. You will be able to pick up your order on 10.07.2026 at the Riga pickup point or choose delivery across Latvia and Europe. We carefully inspect every purchase and pack it securely for safe transportation.

### What payment options are available?

AiO.lv offers several payment methods: Bank transfer, Bank cards on-line, Apple Pay, Google Pay, Installment, Leasing for legal entities. All transactions are 100% secure and encrypted.

### Can CyberPower OLS4KERT4UA-IEC UPS be purchased with a lease?

Yes, the purchase is available both on credit and with an interest-free installment plan. Learn more about installments and credit options: https://aio.lv/en/payment#b3

### Can this product be purchased for a company (with VAT)?

Yes. AiO.lv works with legal entities in Latvia and across Europe. The product price already includes VAT. For certain product categories, as well as for companies from other EU countries with a valid VAT number, a 0% VAT rate may apply. We issue the invoice immediately after the order is placed, support electronic BIS invoices, and automatically generate all necessary accounting documents. You can complete the purchase for a company online — simply select the company profile and choose bank transfer as the payment method during checkout.

### What is the warranty period?

All CYBERPOWER products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized CYBERPOWER service centers and through AiO.lv

### Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

### Where should I contact for warranty service?

For warranty-related questions you can contact the AiO.lv (SIA VSPRO) customer support team. More information about warranty service: https://aio.lv/en/warranty

### How can I tell if this product suits my needs?

When making a choice, we recommend paying attention to the key features: ac outlets quantity, usb 2.0 ports quantity, weight, output power, output power capacity, product colour, compatibility with your devices or usage conditions, material quality, functionality, and warranty terms. These characteristics will help you determine how well the model meets your needs.

## Image

https://aio.lv/img/cache/product/10914841/65773393_large.webp