ifitaintbrokeitwillbe
New Member
- Joined
- Jul 1, 2021
- Messages
- 6
Here is my setup: I have an Ampere-Time 24 volt 100 AH battery connected to a 3,000 watt 24 volt inverter. I use a 1,200 watt solar panel to charge the battery as needed via an MPPT charge controller.
Here is my question: The battery is rated for a life of 4,000 cycles where the depth of discharge is 90% between charges. Is the LiFePo battery limited to only 4,000 cycles for micro-charges in which the depth of discharge is only 5% between charges?
jim
- Under normal conditions, the load on the inverter varies through out the day. When the load is low and the sky is sunny, the solar panels charge the batteries. When the load is high or clouds are passing over the solar array, the battery discharges through the inverter.
- Under normal conditions the charge and discharge rates are below 20 amps. However, I have a circuit breaker in place to ensure that the load never exceeds battery-rated-capacity of 100 amps. I also limit maximum possible charge current so that it cannot exceed 60 amps.
- Under normal conditions the system will draw a few watt-hours from the battery for a short time. Then when that load switches off, the solar panels restore those watt-hours to the battery. Normally the battery is operating above 95% state of charge because it never uses more that 5% charge in any given interval. This is what I call micro-charging.
Here is my question: The battery is rated for a life of 4,000 cycles where the depth of discharge is 90% between charges. Is the LiFePo battery limited to only 4,000 cycles for micro-charges in which the depth of discharge is only 5% between charges?
jim