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Compare the 19 displayed Techfine solar charge-controller pages

Open the exact source-derived page, then confirm model/code, PV and battery electrical limits, charge profile, special functions, monitoring, protection, files, MOQ and current supply terms.

Displayed controller routes

Separate current rating, system voltage and special functions

The category combines standard MPPT, higher-voltage and hybrid/special-use labels. Select from the complete electrical architecture.

20–100 A adaptive-voltage routes

Multiple pages display 12/24/36/48 V adaptive wording at different current ratings. Confirm exact supported voltage detection, maximum PV voltage/power, charge current, terminals, cooling and battery profile.

96 V controller routes

Displayed 60/80/100 A pages include 96 V and different PV-power wording. Treat these as a separate high-voltage battery route; verify PV input, battery range, insulation, protection and cable design.

Solar/wind and AC/DC hybrid routes

Several titles mention wind hybrid or AC/DC hybrid functions. Request the exact wind turbine/rectifier or AC input/output architecture, control logic, dump load, priorities, protection and included hardware.

Street-light, AC-output and monitoring labels

Street-light, AC-output and Wi-Fi/GPRS wording may indicate specialized or optional functions. Confirm load terminals/timers, actual AC role, included communications, gateway/SIM, protocol and service.

Controller RFQ checks

Six checks before selecting a Techfine charge controller

A correct controller shortlist ties the exact PV array to the battery bank, charging algorithm, load functions and environmental limits.

Battery-system voltage

Define nominal and operating voltage, series/parallel battery layout and whether automatic detection is acceptable; confirm the exact supported range and startup/detection conditions rather than relying on an adaptive label.

PV voltage, power and current

Provide module Voc/Vmp/Isc/Imp, minimum temperature, string length/count and array watts; verify cold Voc, MPPT window, maximum input current/power and controller output-current limits.

Battery chemistry and charge profile

Provide exact battery/BMS, lead-acid type or lithium chemistry, bulk/absorption/float or lithium setpoints, temperature compensation, low-temperature charge limits, equalization rules and communication needs.

Special inputs and outputs

Define DC load, street-light timer, wind/rectifier/dump load, AC input/output or other hybrid function; request a one-line and confirm which ports, sensors and protections are actually included.

Thermal, protection and wiring

Confirm ambient/altitude, derating, cooling, enclosure/IP, PV/battery disconnects, fuses/breakers/SPD, reverse polarity, conductor/terminal size, grounding and installation clearance.

Monitoring, files and supply

Confirm whether Wi-Fi/GPRS is built in or optional, gateway/SIM/protocol and data functions; request exact datasheet/manual/test evidence, settings, warranty, MOQ/sample, lead time and substitution control.

Charging and compatibility boundaries

An ampere label does not prove PV or battery compatibility

Final suitability depends on PV cold voltage/current, battery voltage and charge profile, environment, wiring, firmware and special-function hardware.

Tracking efficiency is not conversion or system efficiency

An MPPT tracking figure such as up to 99.9% does not include conversion, wiring, temperature, battery charge/discharge, curtailment or load losses. Request the exact test boundary.

Adaptive voltage is not universal battery support

Automatic 12/24/36/48 V wording does not prove every battery bank, chemistry or BMS. Confirm voltage detection, setpoints, current, communication and safe startup for the exact configuration.

Lithium wording is not a charge approval

Lithium batteries require correct voltage/current, charge stages, BMS behavior, low-temperature protection and manufacturer approval. Generic lithium labels cannot replace battery documentation.

Wi-Fi/GPRS and hybrid functions may be optional

Confirm included module, ports, gateway, protocol, SIM/service, wind/AC/DC hardware and control behavior. A repeated feature line or title does not establish delivered scope.

Continue the DC design

Connect controller selection to battery compatibility and off-grid scope

Use the compatibility guide for charging limits and the microgrid solution to map PV, battery, loads and protection.

Battery compatibility checks

Apply voltage/current, charge-profile, BMS, protection, cable and commissioning checks to the controller and battery combination.

Review compatibility

Remote off-grid microgrid solution

Review how PV, charge controller, battery, inverter, loads, generator and protection form one stand-alone system.

Review system context

Techfine charge controller FAQ

Questions to close before fixing an MPPT controller

These answers organize procurement; final PV string, battery charging, protection and installation remain model- and system-specific.

How should the controller ampere rating be selected?

Calculate battery-side charge current from array power and battery voltage, then check the controller's exact output-current limit, PV input voltage/current/power, temperature derating and battery acceptance. Add design margin according to the manual and applicable rules.

Can a 12/24/36/48 V adaptive controller work with any battery?

No. Confirm actual operating range and detection conditions, chemistry-specific charging setpoints, BMS or temperature requirements, maximum current, wiring and safe startup. Nominal voltage alone is insufficient.

Does 99.9% MPPT efficiency mean the controller is 99.9% efficient?

No. Tracking efficiency describes how closely the controller follows the available maximum-power point under a test boundary. Conversion, thermal, wiring, battery and system losses remain separate.

What should a Techfine charge-controller RFQ include?

Include exact product/code, battery voltage/chemistry/BMS, module and string data with cold Voc, array watts/current, required charge amps, special load/wind/AC functions, monitoring, protection, documents, quantity, sample and schedule.

Techfine charge-controller procurement

Techfine MPPT Solar Charge Controllers Across Battery and PV Routes

Compare 19 displayed source pages whose names span 20–100 A, 12/24/36/48 V adaptive and 96 V routes, plus solar/wind hybrid, AC/DC hybrid, AC-output and street-light wording. Similar titles and repeated feature text do not make the controllers interchangeable. Preserve the exact product page and code, then confirm battery-system voltage, PV cold Voc and array power/current, MPPT operating range, battery chemistry and charge profile, load/AC/wind functions where applicable, protection, thermal/cable design, monitoring options, documents, MOQ, availability and commercial terms.

Prepare a Techfine MPPT controller RFQ

Send the battery system, PV module/string design, charge current, special functions, monitoring/protection, exact model, files, quantity and delivery target.

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