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header-product Qoltec 48V Battery Voltage Balancer for 4 x 12V AGM GEL LiFePO4 Batteries 10A LED
91.49 €

Qoltec 48V Battery Voltage Balancer for 4 x 12V AGM GEL LiFePO4 Batteries 10A LED

Qoltec 48V Battery Voltage Balancer 51079 Photo 1

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Qoltec 48V Battery Voltage Balancer for 4 x 12V AGM GEL LiFePO4 Batteries 10A LED

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Qoltec 48V Battery Voltage Balancer for 4 x 12V AGM GEL LiFePO4 Batteries 10A LED

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Short description

Qoltec 48V battery voltage balancer designed for systems with four 12V batteries, supporting AGM, GEL, and LiFePO4 types with a 10A equalization current. Features LED status indicators for real-time monitoring. This device maintains equal charge levels across all connected batteries, preventing overcharging and premature degradation, which extends overall battery bank lifespan in solar systems, electric vehicles, and backup power setups.
Available at price 91.49 €: 5 pcs.
Total available for order: 210 pcs.
Warranty: 2 Years
SKU: 12637358
Manufacturer: QOLTEC
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Cheapest delivery:

Unisend LV

Pick-up points

Unisend LV

Cost

1.79 €

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Customer service center
2b. Kengaraga str., Riga, Latvia, LV-1063
16.09.2026 {{selectedOffer.officeDeliveryString}}
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Courier Delivery Please note that in case of a large parcel additional delivery costs may apply!
21.09.2026 {{selectedOffer.courierDeliveryString}}
From 4.99 € (Weight: 0.37 kg)
Parcel couriers
Unisend LV / Venipak Pickup LV / Venipak Locker LV / Latvijas Pasts pakomāts / DPD Paku skapis / Omniva LV / Latvijas Pasts nodaļa
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From 1.79 €
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All payment Methods:
Bank transfer, Bank cards on-line, Apple Pay, Google Pay, Installment
36 months installment: from 2.54 euros per month
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Product information

Description

The Qoltec 48V Battery Voltage Balancer is an essential device designed to maintain equal charge levels across four connected 12V batteries in a 48V system. By continuously monitoring and balancing the voltage, this unit prevents overcharging, sulfation, and premature degradation of individual cells. It supports multiple battery chemistries including AGM, GEL, and LiFePO4, offering a versatile solution for energy storage systems. Equipped with a 10A equalization current and practical LED status indicators, it ensures reliable and efficient operation for demanding power setups.

Advantages

Using a dedicated battery voltage balancer significantly improves the overall performance and longevity of a battery bank. Uneven charging often occurs in series-connected systems due to minor differences in internal resistance and capacity, which can lead to early failure of the entire bank. This device actively redistributes energy to weaker batteries during charging and discharging cycles, ensuring that every unit operates within safe voltage limits. The integrated LED indicators provide instant visual feedback on the operational status, allowing for quick checks without the need for multimeters. Its broad compatibility with popular battery technologies like AGM, GEL, and LiFePO4 makes it adaptable to various existing and new installations.

Suitable for

  • Solar energy storage systems using 48V battery banks
  • Backup power supplies and uninterruptible power supply setups
  • Electric vehicles and mobility carts utilizing multiple 12V batteries
  • Off-grid power installations in remote locations or cabins
  • Marine power systems with 48V configuration

When it may not be suitable

This device is specifically designed for 48V systems utilizing four 12V batteries connected in series. It is not suitable for systems with a different voltage rating, such as 12V, 24V, or configurations with a different number of individual units. Additionally, it cannot be used with battery types other than AGM, GEL, and LiFePO4.

Key specifications

  • Designed for 48V battery systems
  • Compatible with four 12V batteries
  • Supports AGM, GEL, and LiFePO4 battery types
  • Maximum equalization current of 10A
  • Equipped with LED status indicators

How to use

Installation of the battery voltage balancer requires careful connection to the battery bank according to the wiring diagram provided in the user manual. Each of the four 12V batteries must be connected to the corresponding terminal lines of the balancer to ensure proper voltage distribution. Once correctly wired, the device operates automatically, continuously monitoring the voltage differences between the units and adjusting the current as needed. Regular visual inspection of the LED indicators is recommended to verify normal operation and ensure that all batteries remain balanced.

What to consider before purchase

  • Verify that your existing battery setup consists of exactly four 12V batteries connected in a 48V configuration
  • Check that your battery chemistry is either AGM, GEL, or LiFePO4
  • Ensure the 10A equalization current matches the requirements of your battery capacity
  • Confirm available physical space for mounting the balancer near the battery bank

For optimal performance and safety, install the voltage balancer as close to the battery bank as possible using appropriate wire gauges, and periodically check all terminal connections for security and signs of wear.

Description

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Product comparison

The Qoltec 48V battery voltage balancer for four 12V batteries and the QOLTEC intelligent microprocessor charger 12V 6A are both battery maintenance solutions from the same brand, but they serve entirely different purposes. The balancer is designed for stationary multi-battery setups to equalize charge levels across a 48V bank, while the charger is an independent unit used to charge, maintain, and recover a single 12V battery.

⚙️ The following specification comparison details the primary operational differences, supported battery types, and intended functions to help you understand how these devices differ in real-world application.

ParameterQoltec 48V Battery Voltage BalancerCharger QOLTEC Intelligent 12V 6APractical conclusion
Primary functionVoltage balancing for multi-battery 48V systemsCharging and recovery for a single 12V batteryThe balancer operates continuously within a connected battery bank, whereas the charger is used periodically for standalone battery service.
Supported battery typesAGM, GEL, LiFePO4AGM, GEL, LiFePOBoth products support widely used modern battery chemistry standards.
Current and voltage10A equalization current, for 48V systems (4 x 12V)6A charging current, for 12V batteriesThe balancer is built for large multi-unit setups, while the charger is designed for individual batteries.

◎ The suitability table below evaluates which product matches specific user needs, setups, and operational scenarios.

Use caseRecommended productWhy
Maintaining a 48V solar or backup power battery bankQoltec 48V Battery Voltage BalancerIt continuously equalizes the charge across four connected batteries, preventing premature degradation in inverter and backup systems.
Routine charging and recovery of a standalone 12V batteryCharger QOLTEC Intelligent 12V 6AIt delivers regulated charging and a dedicated repair function for an individual 12V battery.
The Qoltec 48V battery voltage balancer is built to continuously protect and balance multi-battery 48V setups, while the QOLTEC 12V 6A charger is designed for standalone 12V battery maintenance and recovery. Choose the balancer if you need to manage a four-battery bank, or the charger if you only need to service individual 12V batteries.
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Stock data
Warehouse Stock Delivery to the store Store Price
EU1 5 16.09.2026
91.49 € Best price
WH323 200 15.09.2026 Best delivery
New
91.99 €
WH356 5 21.09.2026
106.99 €
91.49 €
Stock: 5
Delivery Date: 16.09.2026
Warehouse: EU1
New
91.99 €
Stock: 200
Delivery Date: 15.09.2026 Best delivery
Warehouse: WH323
106.99 €
Stock: 5
Delivery Date: 21.09.2026
Warehouse: WH356

Customer reviews

Customer questions

FAQ

How much does the Qoltec 48V Battery Voltage Balancer 51079 cost, and is it available for purchase?

The price is 91.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 210 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 16.09.2026 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 48V Battery Voltage Balancer 51079 be purchased with a lease?

Yes, the purchase is available both on credit and with an interest-free installment plan. We work with leading banks and leasing companies in Latvia, allowing you to make your purchase on convenient terms — with a minimal down payment and a repayment period from 3 to 36 months. You can apply for credit or installments for the Qoltec 48V Battery Voltage Balancer 51079 online, and the application process is as simple as possible:
  • Select the product on the website and add it to your cart;
  • When placing your order, choose the payment method “Installments”;
  • Fill in the required details for the lending partner;
  • Receive a decision within a few minutes.
For more information about available payment options, interest-free installment terms, and credit conditions in Latvia, please visit the Payment page.

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. We will assist with consultation, warranty claim processing, and coordination with certified service centers.
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14-Day Return Policy We are confident in our quality, but if the purchase doesn’t fit — you have 14 days to return the product with peace of mind.
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