# Hybrid solar inverter QOLTEC 53865 3500W with Wi‑Fi, 3500 W continuous output

**URL:** https://aio.lv/en/product--qoltec-53865--11412182
**Data updated:** 2026-02-14 19:47 (EET)
**Category:** Power Inverters
**Manufacturer:** QOLTEC
**Manufacturer code:** 53865
**EAN:** 5901878538655
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 260.49 €
**Prices and availability valid until:** 2026-07-26 23:59
**Price without VAT (21%):** 215.28 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--qoltec-53865--11412182

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 06.07.2026 | free |
| Pickup points | 09.07.2026 | 1.89 EUR |
| Courier delivery to door | 09.07.2026 | 6.31 EUR |

## Summary description

Hybrid solar inverter QOLTEC 53865 3500W with Wi‑Fi is designed to convert DC from solar panels and batteries into 3500 W AC for household or small commercial use. The unit combines solar MPPT input and battery backup capabilities with integrated Wi‑Fi for monitoring and control. Suitable for off‑grid, backup power and self‑consumption systems, it improves energy independence and provides reliable AC supply.

## Long description

The QOLTEC 53865 hybrid solar inverter 3500W with Wi‑Fi converts DC power from solar panels and batteries into a 3500 W AC output suitable for household and small commercial applications. The device integrates a solar MPPT input with battery backup functionality and built‑in Wi‑Fi for remote monitoring and control of power flow, providing a compact solution for off‑grid, backup and self‑consumption energy setups.
Advantages
The inverter delivers a continuous AC output of 3500 W while managing solar input and battery charging via an MPPT regulator. Built‑in Wi‑Fi enables remote status monitoring and basic control through compatible apps or web interfaces. The hybrid design supports switching between grid, solar and battery sources to maintain power continuity. Its compact form factor and integrated features reduce the need for additional external controllers.
Suitable for
Residential solar systems for daytime self‑consumption and night backup
Small commercial premises requiring uninterrupted power for essential loads
Off‑grid cabins, holiday homes and remote locations with battery storage
Backup power applications where automatic source switching is required
Key specifications
Continuous AC output power: 3500 W
Hybrid topology with MPPT solar input and battery support
Integrated Wi‑Fi for remote monitoring and control
AC output suitable for common household and commercial loads
Designed for off‑grid, backup and self‑consumption installations
How to use
Install the inverter according to local electrical codes and the manufacturer’s installation guide, mounting it in a dry, ventilated location away from direct sunlight and heat sources. Connect solar panels to the MPPT input and batteries to the designated battery terminals, observing correct polarity. Connect the AC output to the load distribution or transfer switch as required. Configure Wi‑Fi and monitoring via the supplied software or app to view real‑time generation, battery state and system status. Perform a functional test to verify proper operation before placing the system into regular use.
Usage recommendations
Use PV modules and batteries that match the inverter’s voltage and power ranges, and include appropriately rated overcurrent protection and isolation devices. For reliable long‑term operation, maintain adequate ventilation, avoid overloading beyond the continuous 3500 W rating, and follow periodic inspection schedules for wiring and connections. When integrating with a grid supply or other generators, ensure correct configuration of transfer or anti‑islanding settings according to applicable regulations.

## FAQ

### How much does the Hybrid solar inverter QOLTEC 53865 3500W cost, and is it available for purchase?

The price is 260.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 138 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 06.07.2026 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 Hybrid solar inverter QOLTEC 53865 3500W 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 QOLTEC 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 QOLTEC 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/11412182/66055340_large.webp