Generator fails to start; controller shows E13 Low Battery Voltage.

Safety first: Disable automatic start. Batteries can emit explosive gases; avoid sparks and open flames.

• Measure battery voltage: Use a multimeter at the battery posts. If below about 11.5 V (12 V system) or 23 V (24 V system), the battery is deeply discharged.
• Inspect terminals: Clean corrosion from posts and clamps, then tighten securely. Check ground connection to the Aksa generator frame.
• Check charger operation: Verify AC supply to the charger and measure its DC output. Replace the charger if it is not providing the correct float voltage.
• Recharge or replace battery: Use an external smart charger to fully charge the battery. If it will not hold charge or fails a load test, replace with the correct CCA‑rated battery specified by Aksa.
• Clear alarm and test start: After restoring battery health, reset the controller and perform a manual start test.