1. Uvod
This manual provides essential information for the safe and efficient operation of your Powertech MB3904 8 Step Intelligent Lead Acid and Lithium Battery Charger. Please read this manual thoroughly before use and retain it for future reference.
2. Sigurnosne informacije
Uvijek poštujte sljedeće sigurnosne mjere:
- Prije spajanja ili prekidanja priključaka na bateriju, provjerite je li punjač isključen iz napajanja.
- Koristite punjač samo u dobro prozračenim prostorijama.
- Izbjegavajte punjenje zamrznutih baterija.
- Ne izlažite punjač kiši ili prekomjernoj vlazi.
- Čuvati van domašaja djece.
- This charger is designed for 6V or 12V Lead Acid or LiFePO4 batteries only. Do not use with other battery types.
3. Sadržaj paketa
Provjerite da li su sve stavke prisutne u paketu:
- Powertech MB3904 8 Step Intelligent Battery Charger Unit
- Baterija Clamp Connectors (Red and Black)
- Konektori s prstenastim terminalom
- AC strujni kabl
- Korisnički priručnik (ovaj dokument)

Image: The Powertech MB3904 battery charger unit shown with its various included accessories, including battery clamps, ring terminals, and the AC power cord.
4. Značajke proizvoda
The Powertech MB3904 charger offers advanced features for optimal battery maintenance:
- Proces punjenja u 8 koraka: Ensures thorough and efficient charging for various battery types.
- Multi-Voltage Kompatibilnost: Suitable for both 6V and 12V lead acid and LiFePO4 batteries.
- Sveobuhvatna zaštita: Includes overload, short circuit, reverse polarity, safety timer, and wrong battery protection.
- Intuitivni LED indikatori: Clearly display charge status and selected mode.
- Dugme za odabir načina rada: Allows easy switching between charging modes.

Slika: Pogled odozgo prema dolje view of the Powertech MB3904 charger, highlighting the LED indicators for charge status and the 'MODE' button for selecting charging programs.
5. Podešavanje
- plasman: Place the charger on a stable, flat surface in a well-ventilated area, away from direct sunlight or heat sources.
- Povezivanje baterije: Ensure the battery terminals are clean. Connect the red (+) clamp/ring terminal to the positive (+) battery terminal and the black (-) clamp/ring terminal to the negative (-) battery terminal. Ensure a secure connection.
- Priključak za napajanje: Plug the AC power cord into a suitable wall outlet. The charger will enter standby mode.
6. Uputstvo za upotrebu
6.1. Selecting Charging Mode
After connecting the battery and power, press the MODE button to cycle through the available charging programs. The corresponding LED will illuminate to indicate the selected mode:
- 12V 3.8A (Normal): Standard charging for 12V lead acid batteries.
- 12V 3.8A (Cold/AGM): For charging 12V lead acid batteries in cold conditions or AGM batteries.
- 12V 0.9A (Small): For charging smaller 12V lead acid batteries.
- 6V 3.8A: For charging 6V lead acid batteries.
- Lithium (12.8V/12V): For charging 12V LiFePO4 batteries.
- Popravak: A special mode for desulfation of deeply discharged lead acid batteries.
6.2. Proces punjenja
Once a mode is selected, the charger will automatically begin the 8-step charging process. The progress LEDs (25%, 50%, 75%, 100%) will illuminate sequentially to indicate the battery's charge level. When the 100% LED is solid, the battery is fully charged.
6.3. Isključivanje punjača
- Isključite kabl za napajanje naizmeničnom strujom iz zidne utičnice.
- Odspojite crni (-) clamp/ring terminal from the negative (-) battery terminal.
- Odspojite crveni (+) clamp/ring terminal from the positive (+) battery terminal.
7. Održavanje
- čišćenje: Očistite punjač casinObrišite mekom, suhom krpom. Ne koristite abrazivna sredstva za čišćenje ili rastvarače.
- Skladištenje: Čuvajte punjač na hladnom i suvom mestu kada ga ne koristite.
- Inspekcija kablova: Periodically inspect the power cord and battery cables for any signs of damage. Do not use the charger if cables are damaged.
8. Otkrivanje problema
| Problem | Mogući uzrok | Rješenje |
|---|---|---|
| Punjač se ne uključuje. | Nema napajanja iz utičnice; labav kontakt. | Provjerite utičnicu; uvjerite se da je kabel za napajanje sigurno priključen. |
| LED lampica za grešku svijetli. | Reverse polarity; short circuit; wrong battery type. | Check battery connections for correct polarity; inspect cables for shorts; ensure battery type matches selected mode. |
| Baterija se ne puni. | Battery deeply discharged/damaged; incorrect mode selected. | Try "Repair" mode for lead acid batteries; test battery with a multimeter; ensure correct charging mode is selected. |
9. Specifikacije
- Model: MB3904
- Ulazni voltage: 220-240V AC, 50/60Hz
- Output Voltage: 6V / 12V DC
- Struja punjenja: 0.9A / 3.8A
- Vrste baterija: Lead Acid (WET, MF, CA, EFB, GEL, AGM), LiFePO4
- zaštita: Overload, Short Circuit, Reverse Polarity, Safety Timer, Wrong Battery
- Dimenzije: Približno 20.4 x 7.4 x 4.8 cm
- Težina: Otprilike 534 g
- Usklađenost: CE
10. Garancija i podrška
This Powertech product is covered by a standard manufacturer's warranty. For specific warranty terms and conditions, please refer to the warranty card included with your purchase or contact your retailer.
For technical support or service inquiries, please contact Jaycar Electronics customer service or visit their official webSačuvajte dokaz o kupovini za slučaj reklamacije.
Jaycar Electronics Webstranica: www.jaycar.com.au





