Techfine ML40415 40 A MPPT controller: Verify PV, Battery and Load Configuration
This page organizes the current local source record for a Techfine ML40415 40 A MPPT controller. It preserves the displayed current, voltage and PV-input wording without converting a shared family table into a universal installation claim. The AC-output title is not supported by a defined AC-output row in the displayed table; obtain the output rating, waveform and wiring evidence. Use the final RFQ to connect the exact controller to the PV string, battery chemistry/profile, DC load and site protection design.
Original source record is retained as the product route for ML40415 40 A MPPT controller; public table values are treated as source evidence, not a released project design.
Current source parameter table
This table is preserved from the current source record. Read it with the identity, compatibility and document boundaries below; unresolved conflicts are not corrected by assumption.
| Factory model | ML40415 | |
|---|---|---|
| System voltage | 12V/24V/36V/48V(Adaptive) | |
| Rated current | 40A | |
| Charging mode | MPPT maximum power point tracking | |
| Applicable battery type | Sealed maintention-free lead-acid battery (default), colloidal lead-acid battery, open lead-acid battery (can also customize parameters for other types of battery charging) | |
| Charging mode | Three stages: constant current, constant pressure, floating charge | |
| Pv Input Maximum Open Circuit Voltage (VOC) | DC150V(minimum temperature) DC138V (25℃ standard temperature) | |
| Start-up time | ≤10s | |
| Dynamic response recovery time | ≤500us | |
| Static power consumption | ≤4W | |
| Tracking efficiency | ≥99.5% | |
| Maximum conversion efficiency | ≥98% | |
| The controller system identifies the operating voltage range | 8～64V | |
| Maximum power point operating voltage range | 12V system | 20～150VDC |
| 24V system | 36～150VDC | |
| 36V system | 48～150VDC | |
| 48V system | 64～150VDC | |
| Rated charging power | 12V | 540W |
| 24V | 1080W | |
| 36V | 1620W | |
| 48V | 2160W | |
| 96V | / | |
| Load voltage | Cobattery voltage | |
| Rated load current | 40A | |
| Load control mode | Normally on normally off mode/time control mode/light control mode | |
| Load undervoltage protection | The default value is 10.5V x N (N is the number of batteries) | |
| Heat dissipation mode | Air cooling | |
| Display mode | Hd LCD backlight display | |
| Protection function | Input and output over and under voltage protection, input and output anti-reverse protection, machine over temperature protection, load over current protection | |
| Temperature compensation coefficient | -3mV/℃/2V | |
| Communication mode | RS485 | |
| Operating ambient temperature | -20℃～+50℃ | |
| Storage temperature | -40℃～+70℃ | |
| Noise | ≤50dB | |
| Humidness | 0～90%RH | |
| Altitude | 0～3000M | |
| Body size (mm) | 219*260*110 | |
| Net weight (KG) is for reference only | 2.8KG | |
| Recommended connection | 7AWG/10mm² | |
Current document status
The current record has an embedded technical table but no verified model-specific installation pack in this review. Request the current datasheet, manual, wiring diagram, model suffix/nameplate, battery settings and destination compliance evidence before order release.
Current table evidence
Read the exact controller member before sizing a PV string
PV Voc, operating window, nominal battery voltage, current and rated PV watts must stay tied to the same table cell and the coldest site condition.
Displayed controller identity
ML40415 40 A MPPT controller is the current route identity. The displayed current is 40 A; confirm the exact suffix and nameplate against the quotation.
System-voltage route
The source describes 12/24/36/48 V adaptive. Do not substitute a title voltage, auto-detection label or a different family branch for the selected unit.
PV input evidence
The visible source records 150 V cold-condition / 138 V at 25 °C Voc; member-dependent rated PV power. Design calculations still need module temperature, series count, Voc tolerance, fuse/disconnect arrangement and the exact manual limit.
Battery and load scope
The tables use battery-type and load-control wording, but actual charge setpoints, BMS permissions, load output rating, cable size and protection remain configuration-specific checks.
Controller RFQ checks
Six checks before finalizing the controller
A complete RFQ separates PV-string limits, battery charging, DC loads, special functions, communications and documents.
Exact model and table cell
Request the full model/suffix, nameplate and current datasheet; identify the one current, voltage and PV-power cell that applies to the quoted unit.
PV string at site temperature
Provide module Voc/Vmp/Imp, series and parallel count, lowest module temperature, cable run and disconnect/fuse topology. Check cold Voc rather than a nominal array voltage.
Battery profile
State chemistry, nominal bank voltage, capacity, BMS limits and required charge/float/equalize settings. Lithium wording or a customizable-profile line is not an approved battery pairing.
Charge and load duty
Confirm charge current, DC load voltage/current, surge, low-voltage disconnect/reconnect, lighting/time controls and any required derating at ambient temperature.
Special functions
Confirm RS485, display, remote monitoring, wind/AC inputs, AC output or street-light functions only from the exact wiring diagram and option schedule.
Evidence and commercial scope
Request manual, wiring, protection/settings schedule, test and destination compliance evidence, supplied accessories, packing, warranty, sample, lead time and substitution controls.
Specification boundaries
Do not let a controller headline replace an electrical design
The controller is one part of the PV, battery, load, cable and protection system; final suitability requires the exact selected unit and installation data.
Source-record boundary
The AC-output title is not supported by a defined AC-output row in the displayed table; obtain the output rating, waveform and wiring evidence.
Voc is not operating voltage
PV cold Voc, MPPT operating range and rated PV watts are different checks. A PV array must remain within every applicable exact-model limit under site conditions.
Battery labels are not compatibility approval
Lead-acid, gel, open-battery or lithium wording does not establish setpoints, BMS communication, current limits, temperature rules or warranty coverage for a specific bank.
Protection is system-specific
Controller protection labels do not replace correctly selected breakers/fuses, isolators, SPD, grounding, cable ampacity, enclosure, ventilation and commissioning tests.
Continue the technical review
Turn the controller record into a documented PV-and-battery RFQ
Use the existing sizing and export guidance to assemble the real installation inputs and evidence request.
Battery and backup sizing guide
Record battery voltage, usable energy, charge/discharge limits, DC loads, temperature and reserve before presenting a system result.
Review sizing inputs →Off-grid solar system planning
Map modules, controller, battery, loads, protection, wiring and commissioning responsibilities into one project scope.
Review system scope →Techfine controller FAQ
Questions to close before an exact-model quotation
These answers preserve the distinction between the current page record and a verified installation specification.
What current and voltage configuration applies to this ML40415 40 A MPPT controller?
The current source record shows 40 A and 12/24/36/48 V adaptive. Confirm the full model/suffix, nameplate and quoted table cell because title wording and shared family tables can differ.
Can the PV string be selected from the controller’s rated PV watts alone?
No. Check cold Voc, MPPT operating window, module electrical data, series/parallel layout, temperature, cable loss and every exact-model input limit before selecting the array.
Does battery-type or lithium wording prove compatibility?
No. Confirm chemistry, nominal voltage, charge/float/equalize settings, current limits, BMS requirements, temperature behavior and the supplier’s exact-model approval in writing.
Which documents should accompany the RFQ?
Request the exact datasheet, manual, wiring diagram, nameplate/model schedule, protection and settings information, supplied option list, destination compliance evidence, warranty and current commercial terms.
Prepare a verified ML40415 40 A MPPT controller RFQ
Send the exact PV module/string design, cold-site Voc, battery chemistry and settings, DC load duty, installation environment, special-function requirement and destination evidence list.
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