Understanding Battery Error Codes: What Do Error 04, 64, 67, and 63 Mean?

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Understanding Battery Error Codes: What Do Error 04, 64, 67, and 63 Mean?

Batteries are the backbone of solar power systems, storing energy for use when the sun isn’t shining. However, like any sophisticated technology, they can display error codes when something goes wrong. If you’ve encountered Error 04, 64, 67, or 63 on your solar battery system, it’s crucial to understand what these codes mean and how to address them.
 Expert Tip from David Manema a Solar Expert from Sona Solar Zimbabwe: Low voltage errors often occur in off-grid systems where batteries are frequently drained. Installing a battery monitor helps track voltage levels and prevent deep discharges.



Common Battery Error Codes and Their Meanings

Battery management systems (BMS) monitor voltage, temperature, and load conditions to protect the battery from damage. When an issue arises, the system triggers an error code. Below are the most frequent error codes and their implications:

1. Error 04 & 64: Low Battery Voltage

The battery voltage has dropped below the safe operating threshold.

Possible Causes

  • Deep discharge (battery drained too much).
  • Aging or degraded battery cells.
  • Poor connections or loose wiring.
  • Faulty charge controller or inverter settings.

Immediate Actions

  • Recharge the battery using a compatible charger.
  • Check for loose or corroded terminals.
  • Test the battery’s health with a multimeter.

Long-Term Solutions

  • Avoid deep discharges by setting proper cut-off voltages.
  • Replace old or failing batteries.
  • Ensure your solar charge controller is correctly configured. 

🔋 Expert Tip from David Manema a Solar Expert from Sona Solar Zimbabwe: Low voltage errors often occur in off-grid systems where batteries are frequently drained. Installing a battery monitor helps track voltage levels and prevent deep discharges.

2. Error 67: Battery Overload

The battery is supplying more current than it can handle, risking damage.

Possible Causes

  • Too many appliances running simultaneously.
  • A sudden power surge (e.g., from a motor or compressor).
  • Incorrect inverter settings (exceeding battery capacity).

Immediate Actions

  • Disconnect non-essential loads.
  • Reset the inverter or battery system.
  • Check if the inverter matches the battery’s discharge rating.

Long-Term Solutions

  • Upgrade to a higher-capacity battery if needed.
  • Use energy-efficient appliances to reduce load.
  • Install a surge protector to prevent power spikes. 
⚡Sona Solar Zimbabwe Recommendation: "If you frequently see Error 67, consider upgrading to a lithium-ion battery, which handles high discharge rates better than lead-acid batteries."

3. Error 63: Battery Overcharging

The battery is receiving too much voltage, which can reduce lifespan or cause overheating.

Possible Causes

  • Faulty charge controller (not regulating voltage properly).
  • Incorrect charging voltage settings.
  • High solar panel output with no load to absorb excess energy

Immediate Actions

  • Disconnect the solar panels to stop charging.
  • Check the charge controller’s voltage settings.
  • Inspect for signs of swelling or overheating.

Long-Term Solutions

  • Use a smart charge controller with overcharge protection.
  • Ensure solar panel voltage matches the battery’s specifications.
  • Regularly monitor charging cycles.
☀️ Why This Matters: Overcharging is a leading cause of battery failure. Sona Solar Zimbabwe’s MPPT charge controllers prevent this by dynamically adjusting charging rates.

How to Prevent Battery Errors in Solar Systems

1. Regular Maintenance - Clean battery terminals to prevent corrosion. - Tighten loose connections. - Check electrolyte levels (for lead-acid batteries).

2. Proper System Sizing - Ensure your solar panels, charge controller, and inverter are compatible with your battery bank. - Avoid overloading the system with excessive appliances.

3. Use Quality Components - Invest in reliable batteries (e.g., lithium-ion for longer lifespan). - Choose smart charge controllers (like those from Sona Solar Zimbabwe) to prevent overcharging.

4. Monitor Battery Health - Install a battery monitoring system to track voltage, temperature, and state of charge. - Schedule professional inspections annually.

When to Call a Professional

  • While some errors can be fixed with basic troubleshooting, certain situations require expert help:
  • Persistent error codes after attempted fixes.
  • Physical damage (swelling, leaks, or burnt smells).
  • Complete battery failure(unable to hold a charge).
🔧 Sona Solar Zimbabwe’s Support: "Our team provides diagnostics, repairs, and replacements for solar batteries. If you’re unsure about an error code, contact us for a free consultation."

Understanding battery error codes (04, 64, 67, and 63) helps you take quick action to prevent damage and extend battery life. Whether it’s low voltage, overload, or overcharging, proper maintenance and quality components can minimize these issues.

For reliable solar batteries and expert support in Zimbabwe, trust Sona Solar Zimbabwe—helping you harness solar energy efficiently and sustainably.

📞 Need help with battery errors? Contact Sona Solar Zimbabwe today!
+263 77 832 4532

🌐 [www.sonasolar.co.zw](https://www.sonasolar.co.zw/)

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