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

**URL:** https://aio.lv/en/product--qoltec-51959--10670658
**Data updated:** 2026-02-12 22:03 (EET)
**Category:** Battery chargers
**Manufacturer:** QOLTEC
**Manufacturer code:** 51959
**EAN:** 5901878519593
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 80.99 €
**Prices and availability valid until:** 2026-07-30 23:59
**Price without VAT (21%):** 66.93 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--qoltec-51959--10670658

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 23.07.2026 | free |
| Pickup points | 28.07.2026 | 1.89 EUR |
| Courier delivery to door | 28.07.2026 | 4.99 EUR |

## Summary 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.

## Long 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.

## FAQ

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

The price is 80.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 266 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 23.07.2026 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 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. 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/10670658/57704171_large.webp