# VOLT POLSKA SinusUPS-800 Inverter 12V 800W with 55Ah Battery

**URL:** https://aio.lv/en/product--volt-polska-3sr800wa55--10927874
**Data updated:** 2026-06-12 15:54 (EEST)
**Category:** UPS
**Manufacturer:** volt polska
**Manufacturer code:** 3SR800WA55
**EAN:** 5903111886639
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 285.99 €
**Prices and availability valid until:** 2026-07-24 23:59
**Price without VAT (21%):** 236.36 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--volt-polska-3sr800wa55--10927874

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 03.07.2026 | free |
| Pickup points | 08.07.2026 | 1.89 EUR |
| Courier delivery to door | 08.07.2026 | 19.69 EUR |

## Summary description

The VOLT POLSKA SinusUPS-800 is a reliable uninterruptible power supply system featuring a 12V inverter with an 800W output capacity and an integrated 55Ah battery. Designed to provide stable power for sensitive electronic devices, this unit ensures continuous operation during grid failures. It is ideal for home and office use, offering efficient energy management and protection for computers, heating systems, and other critical equipment.

## Long description

The VOLT POLSKA SinusUPS-800 is a comprehensive uninterruptible power supply system designed to provide reliable backup energy for sensitive electronic devices. This unit combines a high-performance 12V inverter with a 55Ah battery, delivering a continuous power output of 500W and a peak capacity of 800W. By producing a pure sine wave output, it ensures that connected equipment operates smoothly and safely during grid power interruptions, preventing data loss or hardware damage.
Advantages
The primary benefit of this system is its ability to deliver a pure sine wave, which is essential for the stable operation of modern electronics such as heating pumps, computers, and medical equipment. The integrated design simplifies installation by combining the inverter and battery into a single, cohesive unit, reducing the need for complex wiring. Furthermore, the system features an automatic transfer switch that detects power failures instantly, ensuring seamless transitions to battery power without interrupting the connected devices.
Suitable for
Home heating systems and circulation pumps
Desktop computers and office workstations
Small server equipment and network routers
Sensitive electronic appliances requiring stable voltage
When it may not be suitable
This unit may not be suitable for high-power industrial machinery or heavy-duty appliances that exceed the 800W peak power rating. Additionally, it is not intended for long-term off-grid power generation where continuous high-load usage is required over extended periods.
Key specifications
Output power: 500W continuous, 800W peak
Battery capacity: 55Ah
Input voltage: 12V DC
Waveform: Pure sine wave
Automatic voltage regulation included
How to use
To use the device, connect your equipment to the output sockets on the rear panel. Ensure the unit is plugged into a standard wall outlet to keep the internal battery charged. Once connected, the system will automatically monitor the grid power. In the event of a blackout, the inverter will switch to battery power automatically. After the grid power is restored, the unit will recharge the battery and return to standby mode.
What to consider before purchase
Verify that the total power consumption of your devices does not exceed 500W for continuous operation
Ensure the installation area is dry, well-ventilated, and protected from extreme temperatures
Check the compatibility of your devices with pure sine wave output
Usage recommendations
For optimal battery longevity, avoid deep discharging the unit frequently and ensure it is stored in a cool, dry environment when not in use. Regularly check the connections to ensure they remain secure.

## FAQ

### How much does the VOLT POLSKA SinusUPS-800 Inverter 12V 800W cost, and is it available for purchase?

The price is 285.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 3 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 03.07.2026 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. All transactions are 100% secure and encrypted.

### Can VOLT POLSKA SinusUPS-800 Inverter 12V 800W 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 volt polska 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 volt polska 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

## Image

https://aio.lv/img/cache/product/10927874/61159591_large.webp