GNB Industrial Battery SMPS 48V/15A Battery Charger

The GNB Industrial SMPS 48V/15A Battery Charger is a DC‑DC charger used to condition and maintain high‑capacity lead‑acid or Li‑ion battery banks in industrial settings. Known failure modes include over‑charging due to incorrect voltage jumper settings, leading to the F4 HIGH fault (battery voltage >2.40 V/C at start), as well as internal regulator or MOSFET failures that cause excessive heat and shutdowns. First‑check diagnostics: verify input AC supply and output DC voltage with a multimeter; inspect the battery connector for corrosion or loose contact; review the charger’s diagnostic LED/serial log for F4 codes, then check the jumper settings against the installation manual before resetting the unit.[oss-gpt-20b] Post Comment

Need your GNB Industrial Battery repaired or tested?

We specialize in the repair and refurbishment of high-end industrial control electronics and power systems like this unit.

• ⚙️ Fast Diagnostics – Same-day evaluation available
• 🔁 Reliable Turnaround – Most jobs ship within 5–10 business days
• 🧰 Expert Technicians – Decades of board-level experience
• ✅ 1-Year Warranty – Every repair fully guaranteed

📞 Call Now: 1 (336) 969-0110

Free Estimates • Industrial-grade testing • Nationwide Service

⚡ Call to Purchase AI Services — help us build the next Grace Blackwell GX10 node.

Free Estimates • Industrial-grade testing • 1-Year Warranty • Nationwide Service

Other Repaired Units by GNB Industrial Battery