# Solar MPPT charge controller QOLTEC 40A 12V/24V with LCD display

**URL:** https://aio.lv/en/product--qoltec-53663--11643026
**Data updated:** 2026-02-15 18:51 (EET)
**Category:** Battery chargers
**Manufacturer:** QOLTEC
**Manufacturer code:** 53663
**EAN:** 5901878536637
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 90.49 €
**Prices and availability valid until:** 2026-08-03 23:59
**Price without VAT (21%):** 74.79 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--qoltec-53663--11643026

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 15.07.2026 | free |
| Pickup points | 20.07.2026 | 1.89 EUR |
| Courier delivery to door | 20.07.2026 | 4.99 EUR |

## Summary description

QOLTEC MPPT solar charge controller, 40A output for 12V or 24V systems, equipped with an LCD display for status and settings. The MPPT algorithm optimizes solar panel power to efficiently charge batteries and reduce energy loss. Suitable for small to medium off-grid solar installations, RVs, boats and backup systems where reliable battery management is required.

## Long description

QOLTEC 40A MPPT solar charge controller for 12V/24V systems with an integrated LCD display provides efficient battery charging by continuously tracking the maximum power point of connected photovoltaic panels. The controller automatically detects system voltage (12V or 24V) and applies the MPPT algorithm to extract higher charging current compared with traditional PWM regulators, improving energy harvest from solar arrays in small to medium off-grid installations, recreational vehicles, boats and backup setups.
Advantages
The MPPT algorithm increases charging efficiency by optimizing voltage and current from solar modules, which can result in faster battery recharge and reduced power losses. The unit supports both 12V and 24V battery systems and delivers up to 40A output, enabling compatibility with a variety of battery capacities. The built-in LCD display shows real-time status, system parameters and allows access to configurable charging profiles and protection settings. Integrated protections include overcurrent, overvoltage, reverse polarity and temperature compensation, helping to maintain battery health and system safety.
Suitable for
 Small and medium off-grid solar installations
 RVs and motorhomes
 Marine systems and boats
 Home backup and stand-by battery systems
Key specifications
 Maximum charging current: 40 A
 Supported battery nominal voltages: 12 V / 24 V (automatic detection)
 MPPT tracking for improved power conversion efficiency
 LCD display for system status, settings and real-time parameters
 Built-in protections: overcurrent, overvoltage, reverse polarity and temperature compensation
 Suitable for lead-acid and similar battery chemistries with configurable charging stages
How to use
Install the controller in a dry, ventilated location close to the battery bank and away from direct sunlight. Connect the battery first, observing correct polarity, then connect the solar panel array following the manufacturer’s wiring recommendations. The device will automatically detect system voltage and begin MPPT regulation; use the LCD interface to review charging status, adjust charging parameters if needed and set battery type or charging profiles. Verify wiring and protections before leaving the system unattended.
Usage recommendations
For best performance, size the solar array and battery capacity so the controller operates under its rated current limit, allow adequate ventilation around the unit, periodically check cable connections and configure the correct battery type and charging voltages via the LCD to prolong battery life and ensure safe operation.

## FAQ

### How much does the QOLTEC MPPT solar charge controller 40A 12V/24V cost, and is it available for purchase?

The price is 90.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 8 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 15.07.2026 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 QOLTEC MPPT solar charge controller 40A 12V/24V 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/11643026/66891066_large.webp