# Battery Charger QOLTEC 51957 50A 12V for LiFePO4, AGM, GEL, SLA batteries

**URL:** https://aio.lv/en/product--qoltec-51957--10870125
**Data updated:** 2026-04-16 16:17 (EEST)
**Category:** Battery chargers
**Manufacturer:** QOLTEC
**Manufacturer code:** 51957
**EAN:** 5901878519579
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 161.49 €
**Prices and availability valid until:** 2026-07-12 23:59
**Price without VAT (21%):** 133.46 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--qoltec-51957--10870125

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 22.06.2026 | free |
| Pickup points | 29.06.2026 | 1.99 EUR |
| Courier delivery to door | 29.06.2026 | 4.99 EUR |

## Summary description

QOLTEC 51957 is a 12V battery charger delivering 50A suitable for LiFePO4, AGM, GEL and SLA batteries. It provides regulated charging current for safe and efficient replenishment of deep-cycle and starter batteries. Ideal for workshops, marine, RV and industrial applications where fast, controlled charging is required; helps extend battery life and reduce downtime.

## Long description

QOLTEC 51957 is a 12V battery charger that delivers up to 50A of regulated charging current and supports LiFePO4, AGM, GEL and SLA battery chemistries. Designed for professional and heavy-duty environments, the charger supplies a controlled charging profile intended to replenish deep-cycle and starter batteries efficiently while reducing thermal stress and overcharge risk. Its 50A output makes it suitable for faster recharge cycles compared with lower-current chargers, and the compatibility with multiple lead-acid and lithium-iron-phosphate types allows flexible use across workshops, marine craft, recreational vehicles and small industrial setups.
Advantages
The charger provides stable, regulated current up to 50A, which shortens charging time for compatible 12V batteries. Multi-chemistry support (LiFePO4, AGM, GEL, SLA) enables one unit to serve different battery types without requiring separate chargers. Built-in charge control reduces overcharging and helps maintain battery health over repeated cycles. The robust output is suitable for heavy use and frequent recharge demands in professional contexts.
Suitable for
 Recharging 12V deep-cycle LiFePO4 batteries in RVs and campers
 Maintaining and charging 12V AGM or GEL batteries in marine and boating applications
 Workshop and garage use for starter and service batteries requiring higher current
 Small industrial installations where controlled, high-current 12V charging is needed
When it may not be suitable
This charger is intended for 12V battery systems and is not appropriate for batteries with different nominal voltages (for example 6V or 24V) unless used with compatible systems or converters. It may be excessive for small consumer batteries or applications where only low trickle charging is required; in such cases a lower-current charger or dedicated maintenance unit could be more appropriate. Always confirm battery manufacturer recommendations before use.
Key specifications
 Output voltage: 12 volts nominal
 Maximum charging current: 50 amperes
 Supported battery chemistries: LiFePO4, AGM, GEL, SLA
 Charging mode: regulated multi-stage charging suitable for deep-cycle and starter batteries
 Intended applications: professional, marine, RV, workshop and small industrial use
How to use
Connect the charger to a suitable 12V battery following polarity markings: positive to positive and negative to negative. Ensure connections are secure and that the charger is placed on a stable, ventilated surface away from direct moisture. Select the correct charging mode or chemistry setting if the unit provides selectable profiles for LiFePO4, AGM, GEL or SLA; if not, follow the manufacturer's guidance for the intended battery type. Start charging and monitor the battery temperature and charging indicators; disconnect when the charger indicates a completed charge or when the battery reaches the recommended full voltage. Observe safety precautions and manufacturer instructions for both the charger and the battery.
What to consider before purchase
 Confirm the battery nominal voltage is 12V and compatible with LiFePO4, AGM, GEL or SLA chemistries
 Verify the battery's maximum recommended charging current to ensure 50A is appropriate
 Check for available charging profiles or settings for your specific battery type
 Consider installation space and ventilation requirements due to higher current operation
Usage recommendations
For optimal battery life, use the charger with batteries whose manufacturers recommend high-current regulated charging, avoid leaving batteries connected for prolonged periods after full charge unless the charger supports maintenance/float mode, and routinely inspect connections and the charger for signs of wear or overheating.

## FAQ

### How much does the Battery Charger QOLTEC 51957 50A 12V cost, and is it available for purchase?

The price is 161.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 112 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 22.06.2026 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 Battery Charger QOLTEC 51957 50A 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/10870125/60274424_large.webp