A 24V 2.5kWh battery typically stores about 2,500Wh of energy. In practice, it could power:
* A 50W fan for about 40–45 hours.
* A 100W load for about 20–22 hours.
* A 200W load for about 10–11 hours.
If you tell me what appliances you’re running and how long the battery lasts, I can help determine whether the performance is normal or if there may be a problem.