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header-product Charger QOLTEC Monolith 20A 12V for LiFePO4, AGM, GEL, SLA batteries
87.49 €

Charger QOLTEC Monolith 20A 12V for LiFePO4, AGM, GEL, SLA batteries

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Short description

QOLTEC Monolith 20A 12V charger is designed to charge and maintain 12 V LiFePO4, AGM, GEL and SLA batteries. With a 20 amp output it supports faster recharging and regular battery maintenance, suitable for vehicles, backup power systems and marine use. Offers automatic charge control and protection against overcharge to prolong battery life and ensure reliable performance.
Available at price 87.49 €: 2 pcs.
Total available for order: 12 pcs.
Warranty: 2 Years
SKU: 10670658
Manufacturer: QOLTEC
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Unisend LV

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Cost

1.99 €

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Customer service center
2b. Kengaraga str., Riga, Latvia, LV-1063
23.11.2026 {{selectedOffer.officeDeliveryString}}
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26.11.2026 {{selectedOffer.courierDeliveryString}}
From 4.99 € (Weight: 2.13 kg)
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Product information

Description

QOLTEC Monolith 20A 12V charger is designed to charge and maintain 12 V LiFePO4, AGM, GEL and SLA batteries. With a 20 amp output it supports faster recharging and regular battery maintenance for vehicles, backup power systems and marine applications. The charger provides automatic charge control and overcharge protection to help prolong battery life and ensure reliable performance during long service intervals.

Advantages

The charger delivers a stable 20 A charging current with multi-stage charging control adapted to lead‑acid and LiFePO4 chemistries, enabling efficient replenishment and float maintenance. Built-in protections include overcharge prevention, short-circuit protection and polarity reversal safeguarding to reduce the risk of battery damage. Compact mechanical design and a clear status indicator simplify installation and daily use, while temperature compensation and automatic switching to maintenance mode reduce manual checks.

Suitable for

  • 12 V LiFePO4 battery packs for leisure vehicles and small electric systems
  • AGM, GEL and SLA starter and deep-cycle batteries in cars, vans and trucks
  • Backup power supplies, UPS and emergency lighting battery banks
  • Marine batteries for boats and small watercraft requiring regular maintenance charging

Key specifications

  • Output voltage: 12 V DC
  • Maximum charging current: 20 A
  • Supported battery chemistries: LiFePO4, AGM, GEL, SLA
  • Charging algorithm: multi-stage (bulk, absorption, float/maintenance)
  • Protection features: overcharge protection, short-circuit protection, reverse polarity protection
  • Operating temperature compensation and automatic maintenance mode
  • Cooling: passive or low-noise fan-assisted design depending on load

How to use

Connect the charger to the battery by attaching the positive and negative leads to the corresponding battery terminals, ensuring correct polarity before switching on. Select the appropriate charging profile for the battery chemistry if the unit provides selectable modes; otherwise the charger will detect and apply the correct multi-stage routine for 12 V LiFePO4, AGM, GEL or SLA batteries. Allow the charger to complete the cycle; it will reduce current and switch to maintenance/float mode when the battery reaches full charge. Disconnect the charger after it has entered the maintenance stage or when the battery is no longer required to be connected.

Usage recommendations

For best results, charge batteries in a well-ventilated area and avoid charging in extreme temperatures. Verify battery terminal cleanliness and secure connections before use. Use the charger regularly for standby batteries to maintain capacity, and follow the battery manufacturer's recommendations regarding charge voltages and temperature limits.

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Product comparison

In this overview, the Charger QOLTEC Monolith 20A 12V for LiFePO4, AGM, GEL, SLA batteries is compared with several alternative charging devices: Battery charger QOLTEC 51952 10A 24V, Battery Charger europower CHLFP/12/20, Europower CHLFP/12/20-M8, Europower CHLFP/12/10, and Battery charger everActive UC-800 AC 12V 3A. All selected products are designed to charge and maintain batteries, but they differ significantly in operating voltage, charging current, and supported battery chemistries—ranging from automotive and marine setups to small household rechargeable cells.

⚙️ Below is a comparison of key technical characteristics such as output voltage, current rating, compatible battery types, and intended application for each model.

ParameterQOLTEC Monolith 20A 12VQOLTEC 51952 10A 24Veuropower CHLFP/12/20Europower CHLFP/12/20-M8Europower CHLFP/12/10everActive UC-800Practical Significance
Voltage12V24V12V12V12V12V (input)Determines compatibility with your specific battery system operating voltage.
Current20A10A20A20A10A3AHigher current (20A) supports faster recharging for larger batteries, while lower currents suit compact cells.
Battery TypesLiFePO4, AGM, GEL, SLALiFePO4, AGM, GEL, SLALead-acid, LiFePO4LiFePO4LiFePO4LiFePO4, LiPo, NiMH (AA, AAA, 9V)Broad chemistry support allows usage across standard automotive and specialized lithium applications.
ApplicationVehicles, backup power, marineAutomotive, marine, emergency powerVehicles, marine, stationary systemsMobile and stationary energy storage systemsAutomotive and industrial systemsHousehold use for small batteriesHelps match the device to your exact operating scenario, from household needs to heavy equipment.

◎ The table below evaluates different user needs and usage scenarios to help determine which product is most suitable for specific tasks.

Use CaseRecommended ProductWhy
Fast charging and maintenance of 12V vehicle or marine batteries (LiFePO4, AGM, GEL, SLA)Charger QOLTEC Monolith 20A 12VDelivers a 20A output for faster recharging and supports a versatile mix of battery chemistries for transport and backup systems.
Maintaining 24V operating voltage systemsBattery charger QOLTEC 51952 10A 24VDesigned specifically for 24V networks and batteries with a 10A current rating.
Working with 12V stationary and mobile systems focusing on lithium iron phosphate batterieseuropower CHLFP/12/20 or Europower CHLFP/12/20-M8Provides stable 20A charging tailored specifically for 12V lithium batteries in stationary or mobile setups.
Precise voltage management for smaller or industrial 10A LiFePO4 systemsEuropower CHLFP/12/10A specialized 10A model dedicated to maintaining lithium iron phosphate battery health efficiently.
Simultaneous charging of small household rechargeable batteries (AA, AAA, 9V)Battery charger everActive UC-800 AC 12V 3ABuilt for household environments to handle common cylindrical and 9V rechargeable cells safely.
The Charger QOLTEC Monolith 20A 12V for LiFePO4, AGM, GEL, SLA batteries is an excellent choice for users looking for a powerful, versatile 12V charger with a 20A output to maintain automotive, marine, or backup batteries across multiple chemical types. If your setup requires a 24V system, the QOLTEC 51952 is more suitable; for specialized lower-current lithium setups, the Europower 10A models fit best, while the everActive UC-800 remains ideal for everyday household rechargeable batteries.
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Stock data
Warehouse Stock Delivery to the store Store Price
BT84 2 23.11.2026 Best delivery
87.49 €
WH356 5 30.11.2026
87.99 €
WH323 5 24.11.2026
91.99 €
87.49 €
Stock: 2
Delivery Date: 23.11.2026 Best delivery
Warehouse: BT84
87.99 €
Stock: 5
Delivery Date: 30.11.2026
Warehouse: WH356
91.99 €
Stock: 5
Delivery Date: 24.11.2026
Warehouse: WH323

Customer reviews

Customer questions

FAQ

How much does the Charger QOLTEC Monolith 20A 12V cost, and is it available for purchase?

The price is 87.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 12 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 23.11.2026 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 Charger QOLTEC Monolith 20A 12V 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 Charger QOLTEC Monolith 20A 12V 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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