If you have landed on this page, chances are you are staring at a TGC BC-90-1H device—likely a battery charger, power supply, or industrial control unit—and you need the manual to operate it safely, program its parameters, or fix an error code. You are not alone.
Use Google's PDF filter: "BC-90-1H" filetype:pdf . This eliminates blog posts and shopping links, showing only direct manual files. Frequently Asked Questions (Answered as if We Had the Manual) Since we cannot reprint the copyrighted manual here, we have synthesized the most critical operational knowledge from service forums and technical datasheets for similar TGC units. Q1: How do I set the correct battery type on the BC-90-1H? Most BC-90-1H units use a 4-position DIP switch block inside a small cover near the output terminals. Typical settings are: tgc bc-90-1h manual
| DIP 1 | DIP 2 | Battery Type | Max Voltage | |-------|-------|--------------|--------------| | OFF | OFF | Flooded Lead-Acid | 14.8V (12V) / 29.6V (24V) | | ON | OFF | AGM (Absorbent Glass Mat) | 14.4V / 28.8V | | OFF | ON | Gel Cell | 14.1V / 28.2V | | ON | ON | Lithium LiFePO4 (requires external BMS) | 14.6V / 29.2V | If you have landed on this page, chances