# Battery charger CTEK Pro 25S 300W 12V 25A — professional 12V charger, 300 W output, 25 A max

**URL:** https://aio.lv/en/product--ctek-8504405590-40-194--2010410
**Data updated:** 2026-02-12 09:46 (EET)
**Category:** Battery chargers
**Manufacturer:** CTEK
**Manufacturer code:** 8504405590 40-194
**EAN:** 7340103401940
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 354.99 €
**Prices and availability valid until:** 2026-07-25 23:59
**Price without VAT (21%):** 293.38 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--ctek-8504405590-40-194--2010410

## 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

CTEK Pro 25S 300W 12V 25A is a professional-grade battery charger designed for 12 V systems. With up to 25 A charging current and 300 W output, it supports fast charging and maintenance of lead-acid and compatible batteries. Intended for workshop and fleet use, it offers stable power delivery, reliable battery conditioning and practical protection features for safe operation.

## Long description

CTEK Pro 25S 300W 12V 25A is a professional 12 V battery charger designed for workshop and fleet environments. It delivers up to 25 A charging current and 300 W output to support fast charging, maintenance and conditioning of lead-acid and compatible batteries. The unit provides stabilized power delivery, integrated safety measures and practical connections for routine battery service and diagnostics.
Advantages
The charger offers regulated charging current and multi-stage charging algorithms to reduce overcharging and support battery lifetime. Built-in protections guard against reverse polarity, short circuits and overheating, while an intuitive interface and durable enclosure make it suitable for continuous use in professional settings. Compact footprint and robust connectors simplify installation and handling in garages and service bays.
Suitable for
Charging and maintaining 12 V lead-acid, AGM and gel batteries
Fleet maintenance bays and workshop battery service
Fast recharging of vehicle batteries after diagnostics or repair
Battery conditioning and desulfation routines
Key specifications
Input: compatible with typical workshop AC mains
Output voltage: 12 V
Maximum charging current: 25 A
Maximum output power: 300 W
Charging modes: multi-stage charge and maintenance profiles
Protection features: reverse polarity protection, short circuit protection, thermal management
Suitable battery types: lead-acid, including AGM and gel
Connection type: professional-grade clamps and/or dedicated battery leads
How to use
Connect the charger to AC mains following local electrical regulations. Attach the positive and negative leads to the corresponding battery terminals, ensuring correct polarity and secure contact. Select an appropriate charging mode for the battery type and size, then start the charging process. Monitor indicator lights or the display for charge status and automatic transition to maintenance mode once the battery reaches full charge. Disconnect the charger only after it has completed the cycle or been set to a storage/maintenance mode.
Usage recommendations
Use the CTEK Pro 25S 300W 12V 25A in ventilated areas and avoid placing the unit directly on battery surfaces. Verify battery condition before charging, and use the charger’s maintenance modes for long-term storage. For repeated heavy-duty use, allow cooling intervals to maintain thermal protection effectiveness. Follow vehicle and battery manufacturer guidelines when charging service batteries.

## FAQ

### How much does the Battery charger CTEK Pro 25S 300W 12V 25A cost, and is it available for purchase?

The price is 354.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 28 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: Cash payment, Bank transfer, Bank cards on-line, Apple Pay, Google Pay. All transactions are 100% secure and encrypted.

### 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 CTEK 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 CTEK 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/2010410/47508642_large.webp