30A Solar Charge Controller 12/24/36/48V For Solar System For Lithuim

Solar Charge ControllerModel evidence review

Techfine 30 A title-only controller: Verify PV, Battery and Load Configuration

Name: Techfine 30 A title-only controller: Verify PV, Battery and Load Configuration
Brand: Techfine

This page organizes the current local source record for a Techfine 30 A title-only controller. It preserves the displayed current, voltage and PV-input wording without converting a shared family table into a universal installation claim. This is a material title/table mismatch. Do not quote current, PV power, voltage range or lithium compatibility until a 30 A model table and nameplate are supplied. Use the final RFQ to connect the exact controller to the PV string, battery chemistry/profile, DC load and site protection design.

Current source identity: 30 A title-only controller

Displayed current: 30 A title label

Displayed system-voltage route: title: 12/24/36/48 V; table family begins at 40 A

PV evidence boundary: shared 40/60/80/100 A table, not a 30 A member row

Build Your RFQ

Original source record is retained as the product route for 30 A title-only 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.

Model 40A 60A 80A 100A 40A 60A 80A 100A

Model	40A	60A	80A	100A	40A	60A	80A	100A
System voltage	12V/24V/48V(Adaptive)	96V
Nominal current	40A	60A	80A	100A	40A	60A	80A	100A
Charging mode	MPPT maximum power point tracking
Applicable battery type	Sealed lead acid battery, GEL lead acid battery, open lead acid battery (can also customize parameters for other types of battery charging)
Charging method	Three stages: constant current, constant voltage, floating charge
PV input maximum open circuit voltage (VOC)	150V	250V
Starting time	≤10s
Dynamic response recovery time	≤500us
Static power	≤4W	≤8W	≤4W	≤8W
MPPT Tracking efficiency	≥99.5%
Overall efficiency	≥98%
The controller system identifies the operating voltage range	12V	8～64V	72～128V
24V
36V
48V
Operating voltage range of maximum power point	12V	20～150V	128～250V
24V	36～150V
36V	48～150V
48V	64～150V
Solar panel rated input power	12V	540W	800W	1040W	1300W	/
24V	1080W	1600W	2080W	2600W
36V	1620W	2400W	3120W	3900W
48V	2160W	3200W	4160W	5200W
96V	/	4160W	6240W	8320W	10400W
Load voltage	Available under 12V/24V working voltage	/	/	/	/
Nominal load current	40A	/	/	/	/
Load control method	Normally on and normally off mode/ time control mode /light control mode	/
Load undervoltage protection	10.5V*N (N stands for batteries number) Parameters can be adjustable	/
Heat-dissipating method	Wind cold
Display	HD LCD backlight display
Protections	Input and output over&low-voltage protection, input and output anti-reverse protection, over-temperature protection, load over-current protection
Temperature compensation coefficient	一3mV/℃/2V
Working temperature	一20℃～+50℃
Storage temperature	一40℃～+70℃
Accoustic Noise(db)	≤50dB
Humidity	0～90%RH
Working altitude	0～3000M
Communication Type	RS485
Suggested wire specification	7AWG/10mm²	6AWG/16mm²	4AWG/25mm²	2AWG/35mm²	7AWG/10mm²	6AWG/16mm²	4AWG/25mm²	2AWG/35mm²
Dimension, L×W×H（MM）	380255160	415311173	380255160	415311173
Net Weight (KG)	3.23KG	5.61KG	5.61KG	3.23KG	5.61KG

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

30 A title-only controller is the current route identity. The displayed current is 30 A title label; confirm the exact suffix and nameplate against the quotation.

System-voltage route

The source describes title: 12/24/36/48 V; table family begins at 40 A. 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 shared 40/60/80/100 A table, not a 30 A member row. 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

This is a material title/table mismatch. Do not quote current, PV power, voltage range or lithium compatibility until a 30 A model table and nameplate are supplied.

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 30 A title-only controller?

The current source record shows 30 A title label and title: 12/24/36/48 V; table family begins at 40 A. 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 30 A title-only 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.

Verify Controller Configuration