# QOLTEC Voltage Balancer for 24V Batteries AGM GEL LiFePO4 5A LCD

**URL:** https://aio.lv/en/product--qoltec-51099--12729190
**Data updated:** 2026-10-16 22:19 (EEST)
**Category:** Batteries
**Manufacturer:** QOLTEC
**Manufacturer code:** 51099
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 46.99 €
**Prices and availability valid until:** 2026-11-16 23:59
**Price without VAT (21%):** 38.83 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--qoltec-51099--12729190

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 28.10.2026 | free |
| Pickup points | 02.11.2026 | 1.99 EUR |
| Courier delivery to door | 02.11.2026 | 4.99 EUR |

## Summary description

QOLTEC voltage balancer for 24V batteries supports AGM, GEL, and LiFePO4 with a maximum equalisation current of 5A. Features an LCD display, reverse polarity protection, and automatic or manual balancing modes for 2x 12V battery systems.

## Long description

The QOLTEC Voltage Balancer for 24V Batteries AGM GEL LiFePO4 5A LCD is an autonomous device designed to manage and equalise voltage differences between two 12V batteries connected in series within a 24V system. Operating without the need for an external 230V mains supply, this unit draws power directly from the connected batteries to maintain system stability and efficiency. It features an integrated LCD display for real-time status monitoring and offers multiple operating modes to suit different maintenance requirements. Housed in a compact, fire-resistant enclosure, it is engineered to prevent premature battery degradation and ensure reliable long-term performance across a wide range of applications.
Advantages
This voltage balancer actively prevents capacity loss and cell degradation by automatically correcting voltage deviations between series-connected batteries. It supports a broad spectrum of battery technologies including AGM, GEL, deep-cycle lead-acid, and LiFePO4, accommodating capacities from 1Ah up to 1000Ah. The maximum equalisation current of 5A ensures swift correction of imbalances. Built-in reverse polarity protection safeguards the circuitry against incorrect wiring, while the clear LCD screen provides immediate visibility of operational states, balancing currents, and active modes. The independent power supply design eliminates the complexity of external grid connections, making it highly versatile for mobile and off-grid setups.
Suitable for
Balancing two 12V batteries in 24V photovoltaic and solar power installations
Maintaining battery banks in motorhomes, caravans, and camper vans
Equalising power storage systems on boats and marine vessels
Supporting electrical systems in electric vehicles and forklift trucks
Ensuring longevity in backup and emergency power supply setups
When it may not be suitable
This device is not designed to function with single 12V batteries or battery banks operating at voltages other than 24V using two 12V units in series. It should not be used if the initial voltage difference between the two batteries exceeds 0.2V prior to installation, as excessively mismatched batteries must be manually pre-charged and matched before connecting the balancer.
Key specifications
System compatibility: 24V systems consisting of 2 x 12V batteries
Supported battery types: AGM, GEL, Deep cycle lead-acid, and LiFePO4
Maximum equalisation current: 5A
Recommended battery capacity: 1Ah to 1000Ah
Power source: Powered directly from connected batteries without 230V AC mains
Display type: Integrated LCD screen for operating status and metrics
Safety feature: Built-in reverse polarity protection
How to use
Before installation, verify that both 12V batteries are of the same type, have identical capacities, and are fully charged with a voltage difference of no more than 0.2V. Ensure the batteries are correctly wired in series to achieve an approximate 24V total system voltage. Connect the black lead to the negative terminal of the entire system, the red lead to the positive terminal of the system, and the middle lead to the connection point between the two batteries. Once powered, use the LCD interface to monitor the operating status and select the desired balancing mode such as automatic, forced, manual, or stop based on the condition of your battery bank.
What to consider before purchase
Verify that your setup consists strictly of two 12V batteries connected in series to form a 24V system
Check that your existing batteries fall within the supported chemistry types such as AGM, GEL, or LiFePO4
Confirm that the total capacity of your battery bank is within the 1Ah to 1000Ah operational range
Ensure individual batteries are in healthy condition and properly pre-charged before initial connection
Usage recommendations: Regularly check the LCD display to monitor the operational status and balancing current of your battery system. Select the automatic mode for routine maintenance, and utilise the manual or forced balancing modes only when addressing significant voltage disparities or testing the unit. Always disconnect power sources carefully before performing any maintenance on the wiring or battery terminals.

## FAQ

### How much does the QOLTEC Voltage Balancer for 24V Batteries AGM GEL LiFePO4 cost, and is it available for purchase?

The price is 46.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 5 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 28.10.2026 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. All transactions are 100% secure and encrypted.

### 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/12729190/70592507_large.webp