1. Mawu Oyamba
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. Zambiri Zachitetezo
Nthawi zonse tsatirani njira zodzitetezera izi:
- Ensure the charger is disconnected from the power supply before making or breaking connections to the battery.
- Gwiritsani ntchito charger m'malo omwe mpweya wabwino umalowa bwino.
- Pewani kulipiritsa mabatire owumitsidwa.
- Osayika charger ku mvula kapena chinyezi chambiri.
- Khalani kutali ndi ana.
- This charger is designed for 6V or 12V Lead Acid or LiFePO4 batteries only. Do not use with other battery types.
3. Zamkatimu Phukusi
Onetsetsani kuti zinthu zonse zilipo mu phukusi:
- Powertech MB3904 8 Step Intelligent Battery Charger Unit
- Battery Clamp Connectors (Red and Black)
- Ring Terminal Connectors
- AC Power Chingwe
- Buku la ogwiritsa (chikalatachi)

Image: The Powertech MB3904 battery charger unit shown with its various included accessories, including battery clamps, ring terminals, and the AC power cord.
4. Zinthu Zogulitsa
The Powertech MB3904 charger offers advanced features for optimal battery maintenance:
- 8-Step Charging Process: Ensures thorough and efficient charging for various battery types.
- Multi-Voltage Kugwirizana: Suitable for both 6V and 12V lead acid and LiFePO4 batteries.
- Chitetezo chokwanira: Includes overload, short circuit, reverse polarity, safety timer, and wrong battery protection.
- Zizindikiro za LED: Clearly display charge status and selected mode.
- Batani Losankha Mode: Allows easy switching between charging modes.

Chithunzi: Pamwamba-pansi view of the Powertech MB3904 charger, highlighting the LED indicators for charge status and the 'MODE' button for selecting charging programs.
5. Kukhazikitsa
- Kuyika: Place the charger on a stable, flat surface in a well-ventilated area, away from direct sunlight or heat sources.
- Kulumikiza kwa Battery: 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.
- Kulumikiza Mphamvu: Plug the AC power cord into a suitable wall outlet. The charger will enter standby mode.
6. Malangizo Ogwiritsira Ntchito
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.
- Konzani: A special mode for desulfation of deeply discharged lead acid batteries.
6.2. Njira Yolipirira
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. Disconnecting the Charger
- Chotsani chingwe chamagetsi cha AC pakhoma.
- Chotsani chakuda (-) clamp/ring terminal from the negative (-) battery terminal.
- Chotsani chofiyira (+) clamp/ring terminal from the positive (+) battery terminal.
7. Kusamalira
- Kuyeretsa: Tsukani chojambulira casing ndi nsalu yofewa, youma. Osagwiritsa ntchito zotsukira abrasive kapena solvents.
- Posungira: Sungani chojambulira pamalo ozizira, ouma pomwe sichikugwiritsidwa ntchito.
- Kuyang'ana Chingwe: Periodically inspect the power cord and battery cables for any signs of damage. Do not use the charger if cables are damaged.
8. Mavuto
| Vuto | Chifukwa Chotheka | Yankho |
|---|---|---|
| Chaja sichikuyatsa. | Palibe magetsi ochokera ku soketi; kulumikizana kosasunthika. | Yang'anani malo otulutsira magetsi; onetsetsani kuti chingwe chamagetsi chalumikizidwa bwino. |
| Error LED illuminated. | Reverse polarity; short circuit; wrong battery type. | Check battery connections for correct polarity; inspect cables for shorts; ensure battery type matches selected mode. |
| Batire silikulipira. | 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. Zofotokozera
- Chitsanzo: MB3904
- Lowetsani Voltage: 220-240V AC, 50/60Hz
- Kutulutsa Voltage: 6V / 12V DC
- Kulipiritsa Panopa: 0.9A / 3.8A
- Mitundu ya Battery: Lead Acid (WET, MF, CA, EFB, GEL, AGM), LiFePO4
- Chitetezo: Overload, Short Circuit, Reverse Polarity, Safety Timer, Wrong Battery
- Makulidwe: Pafupifupi 20.4 x 7.4 x 4.8 cm
- Kulemera kwake: Pafupifupi 534 g
- Kutsata: CE
10. Chitsimikizo ndi Thandizo
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 webmalo. Sungani umboni wanu wogula kuti mutenge chitsimikizo.
Malingaliro a kampani Jaycar Electronics Webtsamba: www.kumala.com.au





