1. Uvod
The XTAR VC4 Plus is an advanced 4-bay universal battery charger designed for various rechargeable battery types, including 3.6V/3.7V Li-ion (IMR/INR/ICR) and 1.2V Ni-MH/Ni-CD batteries. It features a smart LCD display, multiple charging modes, and comprehensive safety protections. This manual provides essential information for safe and efficient operation of your charger.
2. Sigurnosne informacije
Please read and understand all safety instructions before using the charger. Failure to follow these instructions may result in electric shock, fire, or personal injury.
- Use the charger only for rechargeable batteries specified in this manual.
- Ne punite baterije koje se ne mogu puniti.
- Držite punjač dalje od vode, vlage i visokih temperatura.
- Nemojte rastavljati niti modificirati punjač.
- Osigurajte odgovarajuću ventilaciju tokom punjenja.
- Isključite punjač iz izvora napajanja kada ga ne koristite.
- Čuvati van domašaja djece.
3. Sadržaj paketa
Provjerite da li se sve stavke nalaze u vašem paketu:
- XTAR VC4 Plus Charger
- USB-C kabl
- US Quick Charge 18W Adapter
- Uputstvo za upotrebu
- Torbica za pohranu

Image: Contents of the XTAR VC4 Plus charger package.
4. Značajke proizvoda
The XTAR VC4 Plus charger offers a range of features for efficient and safe battery charging:
- Široka kompatibilnost: Supports 3.6V/3.7V Li-ion (10440 to 32650) and 1.2V Ni-MH/Ni-CD (AAAA, AAA, AA, A, SC, C) batteries.
- Pametni LCD ekran: Shows real-time charging current, battery voltage, charging capacity, internal resistance, and battery type.
- Više načina rada: Includes Charging, Grading (capacity testing), and Storing modes.
- Podesiva struja punjenja: Selectable currents (3A, 2A, 1A, 0.5A, 0.25A) for optimal charging.
- USB-C Input with QC3.0 Adapter: Ensures fast and stable power delivery.
- Funkcija aktivacije 0V: Can revive over-discharged batteries.
- Sveobuhvatna zaštita: Over-charge, over-discharge, short-circuit, reverse polarity, and temperature protection.
- Efikasno odvođenje toplote: Designed with stripe cracks for better heat loss and automatic temperature adjustment.

Image: The XTAR VC4 Plus charger's compatibility with a wide range of battery sizes, including Li-ion and Ni-MH types.

Image: An explanation of the information displayed on the charger's LCD screen, including voltage, current, internal resistance, capacity, and battery type.

Image: Visual representation of the various safety features integrated into the XTAR VC4 Plus charger.
5. Podešavanje
- Priključite napajanje: Plug the USB-C cable into the charger's input port and connect the other end to the provided 18W QC3.0 adapter. Plug the adapter into a suitable power outlet. The LCD screen will illuminate.
- Umetnite baterije: Carefully insert rechargeable batteries into the charging bays, ensuring correct polarity (+/-). The charger will automatically detect the battery type and begin charging.

Image: The XTAR VC4 Plus charger properly connected to a power source with batteries in its bays.

Image: The Type-C input port on the XTAR VC4 Plus charger.
6. Uputstvo za upotrebu
6.1 Osnovno punjenje
Once batteries are inserted, the charger will automatically detect their type and initiate charging. The LCD will display real-time information for each channel.
6.2 Razumijevanje LCD ekrana
The LCD screen provides detailed information for each of the four channels:
- Voltage (V): Trenutni volumen baterijetage.
- Struja (A): Real-time charging current.
- IR (mΩ): Internal Resistance of the battery.
- Cap (mAh/Wh): Accumulated charging capacity or energy.
- Vrsta baterije: Indicates Li-ion or Ni-MH.
6.3 Changing Charging Current
Press the 'Curr.' button to cycle through available charging currents (0.25A, 0.5A, 1A, 2A, 3A). The charger can deliver a maximum of 3A to a single slot, 2A to two slots simultaneously, or 1A to all four slots.

Image: Illustration of the maximum charging current distribution across the charger's slots.
6.4 Načini rada
Press the 'Mode' button to switch between the three operation modes:
- Način punjenja: Standard charging of batteries.
- Grading Mode: Tests the real capacity of batteries by fully charging, discharging, and then recharging them. The final charge capacity is displayed.
- Storing Mode: Charges or discharges Li-ion batteries to their optimal storage voltage (typically 3.7V-3.8V) to maximize lifespan when not in use.

Image: The three distinct operational modes of the XTAR VC4 Plus charger.

Image: The sequence of operations performed during the Grading Mode to test battery capacity.

Image: The function of Storage Mode, preparing batteries for extended periods of non-use.
6.5 0V Activation
The VC4 Plus can attempt to revive deeply discharged Li-ion batteries (0V activation). Insert the battery, and the charger will automatically try to activate it. If successful, it will begin normal charging.

Image: The 0V activation feature of the charger, designed to revive over-discharged batteries.
6.6 LED indikatori
The charger features LED indicators for each channel:
- zeleno: Standby or fully charged.
- crveno: Punjenje.
- Grey/Off: Power supply unconnected or error.

Image: A guide to understanding the LED indicator lights on the XTAR VC4 Plus charger.
7. Održavanje
- Redovno čistite punjač suhom, mekom krpom. Ne koristite abrazivna sredstva za čišćenje ili rastvarače.
- Ensure the charging bays are free of dust and debris.
- Čuvajte punjač na hladnom i suvom mestu kada ga ne koristite.
- Izbjegavajte ispuštanje ili izlaganje punjača jakim udarcima.
8. Otkrivanje problema
- Punjač se ne uključuje:
- Check if the power adapter is securely plugged into both the charger and the wall outlet.
- Uvjerite se da je utičnica funkcionalna.
- Pokušajte s drugim USB-C kabelom ili adapterom za napajanje ako je dostupan.
- Baterija se ne puni:
- Verify that the battery is inserted with correct polarity.
- Ensure the battery is a compatible rechargeable type (Li-ion or Ni-MH/Ni-CD).
- Check if the battery is severely over-discharged (0V activation might be needed).
- Očistite kontakte baterije i kontakte punjača.
- If an error is displayed, the battery might be faulty or incompatible.
- Inconsistent IR readings:
- Internal Resistance measurements can vary slightly. For critical applications, take multiple readings across different slots and average them.
- Ensure good contact between battery and charger terminals.
9. Specifikacije
| Parametar | Vrijednost |
|---|---|
| Model | VC4 PLUS |
| Ulazni voltage | 5V |
| Output Voltage | 5V |
| Kompatibilne vrste baterija | 3.6V/3.7V Li-ion (IMR/INR/ICR), 1.2V Ni-MH/Ni-CD |
| Compatible Li-ion Sizes | 10440, 14500, 14650, 16340, 17335, 17500, 17670, 18350, 18490, 18500, 18650, 18700, 20700, 21700, 22650, 25500 26650, 32650 |
| Compatible Ni-MH/Ni-CD Sizes | AAAA, AAA, AA, A, SC, C |
| Maksimalna struja punjenja | 3A x 1 slot, 2A x 2 slots, 1A x 4 slots |
| Dimenzije proizvoda | 5.5 x 4.2 x 1.1 inča (140 x 107 x 28 mm) |
| Težina artikla | 13 unce (368.5 grama) |
| Proizvođač | XTAR |
10. Garancija i podrška
The XTAR VC4 Plus charger comes with a 30-dnevna garancija povrata novca i a 24-mjesečna garancija for friendly customer service. If you encounter any issues with your product, please contact XTAR customer support. We are committed to resolving any concerns within 24 hours.
For support, please refer to the contact information provided with your purchase or visit the official XTAR website.