GRANKIA CMR4048 best 40 amp mppt dc to dc rv solar battery charger is very easy to use and provide all the important information you need about the PV, battery and load.
CMR4048 mppt 40 am rv solar battery charger ensures that every drop of available power is rinsed out of your panels, and harvested for storage.
40 amp RV Solar Battery Charger Feature
- Compatible for PV systems in 12V, 24V, 36V, 48V
- Fast MPP Tracking
- Maximum power point tracking efficiency over 99.5%
- PV INPUT 150V max Voc
- Built-in lithium battery activation function
- Support Sealed, GEL, Flooded, and Lithium-ion battery
- Three stages charging optimizes battery performance
- Die-cast aluminum design allows for efficient heat dissipation
- Ability to output in parallel to power DC loads
- Real-time energy statistic function
- Very advanced monitoring app
- Dual RS-485 communication interface allows for easy programming, control and remote monitoring
40A MPPT RV Solar Battery Charger Data
| Model | CMR4048 | |
| MPPT Efficiency | ≥99.5% | |
| System Voltage | 12V/24V/36V/48V(Auto) | |
| Voltage Range | 12V | 9VDC-15VDC |
| 24V | 18VDC-30VDC | |
| 36V | 27VDC-45VDC | |
| 48V | 36VDC-60VDC | |
| Li-ion Battery | 8VDC-60VDC(Adjustable) | |
| Dimension | 305x185x72mm | |
| Net Weight | 2.15 Kgs | |
| PV INPUT | ||
| Max. PV Input Voltage | 150VDC | |
| Min. Vmpp Voltage | Battery voltage +2V | |
| Start-up Charging Voltage | Battery voltage +3V | |
| Low INPUT Voltage Protection | Battery voltage +2V | |
| Over Voltage Protection | 150VDC | |
| Recovery Voltage Protection | 145VDC | |
| PV Rated Input Power | 12V | 520W |
| 24V | 1040W | |
| 36V | 1560W | |
| 48V | 2080W | |
| Li-ion Battery | 504W-2016W | |
| DC LOAD OUTPUT | ||
| Load Voltage | Same as battery voltage | |
| Load Current | 30A | |
| Low Voltage Protection | 10.5VDC, 11VDC restored (Settable) | |
| Setting Parameters | Via PC software / APP / Self | |
| CHARGE | ||
| Battery Type | Sealed(SEL), Gel(GEL), Flooded(FLD), Lithium-ion(Lit), User-defined(USE) | |
| Charging Mode | MPPT (Maximum Power Point Tracking) | |
| Charging Current | 40A | |
| Charging Method | 3-stage: CC (Constant current) – CV (Constant voltage) – CF (Float charge) | |
| Temperature Compensation | -3mV/℃/2V | |
| Active Lithium Battery Function | Optional | |
| SYSTEM | ||
| Protection Function | Input low/over voltage, input/output polarity reverse connection, short circuit, over temperature, battery shedding etc. | |
| Display | HD LCD | |
| Communication | Dual RJ45/RS485, WIFI/Bluetooth(optional) | |
| ENVIRONMENT | ||
| Protection Level | IP21 | |
| Relative Humidity | 0 ~ 90% (Non-condensing) | |
| Altitude | < 3000m | |
| Operating Temperature | -20℃~+50℃ | |
| Storage Temperature | -40℃~+75℃ | |
| Noise | < 10dB | |
Best Solar Charger Information
Setting UP Off-grid Solar System
Solar Controller FAQ
| Q: What is a charge controller’s rating? |
| A: A charge controller is rated by the current it can accept from a PV array to charge batteries and the battery voltages it will support (e.g. 60 amps for 12, 24, and 48-volt batteries). |
| Q: I want to size or oversize my PV array, how can I do this? |
| A: In short, the solar charge controller you choose must be able to support the power requirements of your loads, your battery voltage, and your PV current and voltage inputs. Additionally, you will need to consider whether you need a controller with low voltage disconnect, lighting control, or other features or certifications. Your climate, choice of modules, and price will also determine whether you choose a PWM or an MPPT controller. A good solar distributor will be able to help you size and configure your modules, batteries, and controllers for an optimum system. |
| Q: Can the output of the MPPT be used as a power supply, thus without batteries? |
| A: The answer is: it depends on the type of load. During low current situations the MPPT control bandwidth is too small to be able to maintain a stable voltage. The result is that loads that need to see a stable voltage before they can activate or loads that require a certain “under voltage” to active will not be able to run. Loads where under voltage does not apply, like light globes, can be operated without any problems. |