Battery Control

2 comments started 2023-03-29 last 2023-03-29
GivEnergy ProductsBattery
L
#1 L174559

Any comments welcomed.
Battery misbehaving again! Due to poor solar yesterday I reset battery charge limit to 65% from 50% but the battery went up to 79% before I intervened and changed the charge end time.
The other thing that scared me was the battery temperature, just have a look!

T
#2 Tim

L174559 battery temperature, just have a look!

Don't think you posted that. However, if it is the temperature from "more information", it's not clear where this comes from. There are a number of temperature sensors on each battery; four adjacent to a cluster of cells, and one on the BMS. The cells temperatures tend to drift slightly upwards from ambient when charging or discharging but the BMS temperature is quite sensitive to charge/discharge rate (I²R). I've seen the BMS temperature on my batteries approach 50°C after a period of charging at full chuff. It falls away again very quickly once the current reduces.