Product Guides

Explore Techfine product guides covering solar inverters, MPPT charge controllers, LiFePO4 batteries, off-grid systems, and energy storage solutions.

Split diagram comparing an indoor IP21 inverter location with an outdoor IP65 inverter location exposed to dust and water jets.

IP21 vs IP65 Inverters: What the Rating Means for Solar Installations

IP65 is dust-tight and water-jet resistant; IP21 is basic indoor protection. Learn where each inverter rating fits before buying.

# Inverter Protection, Solar Inverter

Last Updated: July 9, 2026

Solar inverter connected to a Wi-Fi dongle, smartphone monitoring app, and 2.4GHz router for remote solar system monitoring.

How to Connect Solar Inverter to Wi-Fi

Connect a Techfine solar inverter to Wi-Fi in 4 steps with the Solar of Things app, plus fixes for the 6 most common connection failures.

# Solar Inverter

Last Updated: July 8, 2026

How to Read Solar Inverter Display

Read your solar inverter display in 3 layers: LED lights, live data, and 16 fault codes explained, plus fixes for blank or frozen screens.

# Solar Inverter

Last Updated: July 8, 2026

Complete Overview of Solar Inverter Protection

Solar inverter protection covers 8 risks: overvoltage, reverse polarity, overload, short circuit, surge, thermal faults, BMS, and anti-islanding.

# Inverter Protection, Solar Inverter

Last Updated: July 11, 2026

MPPT solar charge controller sizing guide showing solar array wattage, battery voltage, safety margin, and current rating selection.

How to Size an MPPT Solar Charge Controller for Your System

Size an MPPT charge controller in 2 steps: amps = watts ÷ battery voltage × 1.25. Quick-reference table for 100W-1200W panels at 12V, 24V, 36V and 48V.

# MPPT Solar Charge Controller

Last Updated: July 8, 2026

Solar charge controller selection workflow comparing generic MPPT and PWM options through PV sizing, battery compatibility, environmental conditions, documentation, and final system fit.

How to Choose a Solar Charge Controller: A Buyer Selection Guide

Learn how to choose a solar charge controller by matching MPPT or PWM to PV voltage, battery chemistry, charge current, and field conditions before sourcing.

# MPPT Solar Charge Controller

Last Updated: July 12, 2026

Residential solar inverter selection diagram comparing grid-tie, hybrid backup, and off-grid home scenarios with PV panels, batteries, loads, utility grid, and distributor SKU options.

Solar Inverter for Home Use: How to Choose the Right Type

Choose a home solar inverter by 4 factors: grid stability, battery backup, surge load, and voltage. Compare grid-tie, hybrid, and off-grid types.

# Home Solar, Solar Inverter

Last Updated: July 12, 2026

24V solar inverter system with solar panels, DC breakers, four 12V batteries, bus bars, and organized red and black wiring.

How to Set Up a Reliable 24V Solar Inverter System: A Step-by-Step Guide

Build a 24V solar inverter system step by step: wire 12V batteries in series (2S2P), match panels to PWM or MPPT input range, and size cables and breakers.

# Lithium Battery, MPPT Solar Charge Controller, Solar Energy System, Solar Inverter

Last Updated: July 8, 2026

Troubleshooting flowchart showing common solar inverter symptoms such as no display, no AC output, breaker trips, overheating, PV faults, battery faults, and monitoring offline.

Solar Inverter Problems and Solutions: A Practical Troubleshooting Guide

Troubleshoot 9 solar inverter problems: no display, no AC output, tripping, overheating, PV faults, battery faults, and Wi-Fi issues.

# Solar Inverter, Troubleshooting

Last Updated: July 9, 2026

Warehouse checklist illustration showing lithium battery storage with SOC, temperature, inspection, terminal protection, and damaged-pack isolation.

How to Store a Lithium Ion Battery Safely for Long-Term Use

Store lithium-ion batteries near 40% SOC in a cool, dry warehouse; inspect every 3-6 months, protect terminals, and isolate damaged packs safely.

# Energy Storage Battery, Lithium Battery

Last Updated: July 9, 2026