
DC-DC Battery Charger
DC-DC Battery Charger
The DC-DC battery chargers are compatible with various AC generators, providing correct charging for lead-acid and lithium batteries. With a 3-stage battery charger and a variety of electronic protections, users can rest assured knowing that it automatically provides the optimal charge for their batteries. Compact and rugged, this product can be easily installed in RVs, commercial vehicles, boats, yachts and many more applications. This series of products has three models, ZY1212-20, ZY1212-40, ZY1212-60.
Features
- Compatible with various 12V batteries: AGM, flood, gel and lithium batteries
- Intelligent protection functions include overvoltage, overtemperature, and polarity reversal
- Battery isolation and battery charger combined into one
- Compact and strong structure, suitable for various conditions
- The three-stage battery charging method enables your battery to reach 100%
product appearance






DC-DC Charger Parameters
| Model | ZY1212-20 | ZY1212-40 | ZY1212-60 |
| Converter | 12VDC to 12VDC | 12VDC to 12VDC | 12VDC to 12VDC |
| Battery input voltage range | 8VDC to 16VDC | 8VDC to 16VDC | 8VDC to 16VDC |
| Rated charging current | 20A | 40A | 60A |
| Charging Voltage Range | lead acid: 13.2V-14.7V Lithium Battery: 12.6V-14.6V | lead acid: 13.2V-14.7V Lithium Battery: 12.6V-14.6V | lead acid: 13.2V-14.7V Lithium Battery: 12.6V-14.6V |
| Max Output Power | 250W | 500W | 750W |
| Ripple Voltage | <50mV@20A | 40A |60A | <50mV@20A | 40A |60A | <50mV@20A | 40A |60A |
| Efficiency | 90% | 90% | 90% |
| Idle power consumption | 0.4A | 0.4A | 0.4A |
| Operating Temperature Range | -4oF – 122 oF -20oC – 50oC | -4oF – 122 oF -20oC – 50oC | -4oF – 122 oF -20oC – 50oC |
| Operating Humidity | 5% to 95% non-condensing | 5% to 95% non-condensing | 5% to 95% non-condensing |
| Size | 211 x 175 x 68mm | 261 x 175 x 68mm | 311 x 175 x68mm |
| Weight | 1.3Kg | 1.6Kg | 1.9Kg |
| Terminals | M6x10 | M6x10 | M6x10 |
| Certifications | CE | CE | CE |
DC-DC Charger System connection diagram

Selection of power cables and fuses
| Model | INPUT/OUTPUT | Cable length 0-3m | Cable length 3-6m | Cable length 6-9m | Fuse |
| ZY1212-20 | Input Cable | Min 10AWG | Min 8-6AWG | Min 6-4AWG | 30A or close |
| Output Cable | Min 12AWG | Min 10-8AWG | 6AWG | 25A or close | |
| ZY1212-40 | Input Cable | Min 6AWG | Min 4AWG | Min 4AWG | 60A or close |
| Output Cable | Min 8AWG | Min 8-6AWG | Min 4AWg | 50A or close | |
| ZY1212-60 | Input Cable | Min 4AWG | Min 4AWG | Min 4AWG | 90A or close |
| Output Cable | Min 6AWG | Min 4AWG | Min 4AWG | 75A or close |