# Battery charger QOLTEC 51917 for LiFePO4/AGM/GEL/SLA batteries, 70 A output

**URL:** https://aio.lv/en/product--qoltec-51917--11207635
**Data updated:** 2026-04-16 16:17 (EEST)
**Category:** Battery chargers
**Manufacturer:** QOLTEC
**Manufacturer code:** 51917
**EAN:** 5901878519173
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 224.99 €
**Prices and availability valid until:** 2026-07-11 23:59
**Price without VAT (21%):** 185.94 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--qoltec-51917--11207635

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 19.06.2026 | free |
| Pickup points | 26.06.2026 | 1.99 EUR |
| Courier delivery to door | 26.06.2026 | 4.99 EUR |

## Summary description

Mains battery charger QOLTEC 51917 designed for charging LiFePO4, AGM, GEL and SLA battery types. Provides a 70 A output suitable for larger battery banks and systems. Offers multi-chemistry compatibility for use in vehicles, marine, solar or backup power setups. Enables reliable charging, maintenance and restoration of battery capacity while simplifying system integration.

## Long description

The QOLTEC 51917 mains battery charger is a high-current charger designed for 12V battery systems using LiFePO4, AGM, GEL and sealed lead-acid (SLA) chemistries. With a 70 A output it is intended for charging larger single-battery banks or parallel battery systems. The charger supports multiple charging profiles for different battery types and includes functions for charging, maintenance and capacity restoration to keep battery systems ready for vehicle, marine, solar hybrid or backup power applications.
Advantages
The charger delivers a stable 70 A output suitable for faster charging of large-capacity 12V batteries while maintaining controlled charge profiles for LiFePO4, AGM, GEL and SLA chemistries. Its multi-chemistry compatibility simplifies integration into mixed-system installations. The device is designed to provide routine maintenance charging and follow appropriate charge stages to reduce overcharging risk and help preserve battery life.
Suitable for
 12V LiFePO4 battery banks in small vehicles, camper vans or leisure craft
 12V AGM or GEL battery systems in marine, camping and caravan setups
 Sealed lead-acid (SLA) systems used for backup power and stationary applications
 Solar hybrid systems and battery banks requiring a mains-fed fast charger
When it may not be suitable
This charger is intended for 12V battery systems and is not suitable for charging single-cell lithium batteries or battery packs that require voltages other than 12V. It may be oversized for very small batteries or maintenance on low-capacity starter batteries where a lower-current charger would be more appropriate. Ensure battery manufacturers’ charging specifications are followed when using any high-current charger.
Key specifications
 Output current: 70 A
 Nominal system voltage: 12 V
 Supported battery chemistries: LiFePO4, AGM, GEL, SLA
 Charge modes: multi-stage charging and maintenance profiles appropriate for supported chemistries
 Intended use: mains-powered charging for larger battery banks and systems
How to use
Connect the charger to a suitable mains supply and then attach the positive and negative output leads to the corresponding battery terminals, observing correct polarity. Select the battery chemistry or charging mode compatible with the connected battery before starting the charge cycle. Monitor the charge process where appropriate and allow the charger to complete its automatic stages to ensure the battery reaches full charge and maintenance state. Follow any additional safety instructions supplied by the charger manufacturer.
What to consider before purchase
 Compatibility with the battery chemistry and the manufacturer-recommended charging profile
 Battery capacity and whether 70 A charge current is suitable for safe charging (C-rate)
 Physical installation space, ventilation and ambient temperature for safe operation
 Required mains supply specifications and wiring capable of handling the charger current
Usage recommendations
Use the charger with batteries that specify acceptance of high-current charging and set the correct chemistry mode before charging. Allow batteries to cool to ambient temperature before charging if recently used, and ensure good ventilation around the charger during operation. For long-term battery health, combine periodic full-charge cycles with maintenance charging according to battery maker guidelines.

## FAQ

### How much does the Battery charger QOLTEC 51917 70 A cost, and is it available for purchase?

The price is 224.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 24 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 19.06.2026 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 51917 70 A 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/11207635/62012782_large.webp