# Voltage Balancer for 24V Batteries 2x12V 5A LED QOLTEC 51078

**URL:** https://aio.lv/en/product--qoltec-51078--12639727
**Data updated:** 2026-08-28 04:19 (EEST)
**Category:** Batteries
**Manufacturer:** QOLTEC
**Manufacturer code:** 51078
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 42.99 €
**Prices and availability valid until:** 2026-11-05 23:59
**Price without VAT (21%):** 35.53 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--qoltec-51078--12639727

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 15.10.2026 | free |
| Pickup points | 20.10.2026 | 1.99 EUR |
| Courier delivery to door | 20.10.2026 | 4.99 EUR |

## Summary description

QOLTEC 51078 voltage balancer designed for 24V battery systems consisting of two 12V batteries. Features a 5A balancing current and LED indicator. This device ensures equal charge distribution, prevents overcharging, extends battery lifespan, and improves overall system efficiency in various backup and mobile power applications.

## Long description

The QOLTEC 51078 voltage balancer for 24V batteries 2x12V 5A LED is an essential electronic device engineered to maintain optimal performance and longevity in dual battery configurations. By continuously monitoring and balancing the voltage between two connected 12V batteries, this unit prevents uneven charging and discharging cycles that typically degrade battery health over time. Integrated LED indicators provide clear visual status updates, allowing users to monitor the balancing process at a glance and ensure the power system operates reliably under various conditions.
Advantages
Using this voltage balancer significantly extends the operational lifespan of both batteries in a 24V setup by mitigating the natural imbalance caused by aging, temperature variations, and differing internal resistance. It ensures that both power sources receive equal charge distribution, which prevents premature cell failure, reduces maintenance frequency, and optimizes overall energy storage efficiency. The compact and durable design allows for straightforward integration into existing electrical setups without requiring complex configuration or extensive technical expertise.
Suitable for
24V battery banks consisting of two 12V units
Solar power energy storage systems
Backup power supply setups
Recreational vehicles and mobile power applications
Marine electrical systems
When it may not be suitable
This device is not designed for battery systems operating at voltages other than 24V or configurations involving more than two batteries simultaneously. It is also unsuitable for single 12V batteries or charging setups that do not utilize paired 12V units in series.
Key specifications
Designed for 24V battery systems
Compatible with two 12V batteries
Maximum balancing current of 5A
Equipped with an integrated LED indicator
How to use
Connect the voltage balancer directly across the terminals of the two 12V batteries configured in series to create a 24V system, following the polarity markings carefully to prevent reverse connection errors. Once properly wired, the device operates automatically, continuously transferring energy from the higher-voltage battery to the lower-voltage battery until equilibrium is reached. Periodically check the integrated LED indicator to verify that the balancing function is active and that the system is operating within normal parameters.
What to consider before purchase
Verify that your existing battery setup consists of two 12V batteries connected in series to form a 24V system
Confirm that the 5A balancing current meets the requirements of your specific battery capacity
Ensure adequate physical space is available for mounting the device near the battery bank
For optimal performance and battery longevity, regularly inspect all electrical connections for security and corrosion, and ensure the operating environment remains within safe temperature limits.

## FAQ

### How much does the QOLTEC 51078 Voltage Balancer for 24V Batteries cost, and is it available for purchase?

The price is 42.99 € (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 15.10.2026 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/12639727/69556467_large.webp