Hi,
In a typical setup, one is allowed to have only one temperature sensor for the battery bank to be charged. All chargers are designed to listen to one single sensor. It makes perfect sense when you have just one battery or two batteries sitting “right next to” each other. But in real life a service/domestic/house bank consists of multiple batteries. In this situation, temperature measurement of all batteries in the bank is not possible. In the attached photo, you see two batteries sitting close to each other. The gap in betwen them is approx 6 cm. While one battery is 87 degrees celcius, the other one is 33. Assume that the temperature sensor was fitted on the one which is 33 degrees. The charger would continue charging without knowing that the other one is 87. This happened to a client of mine which had no temperature sensor and even a charger which has no temperature sensor input. He just had pure lock. I was nearby.
In a lithium setup, bms keeps an eye on each battery’s temperature. So it is obvious that it is possible to handle more than one temperature inputs. But it is not possible to do this in a lead acid setup (or a setup with non-smart batteries).
What can be done so that Victron chargers measure each individual battery in the bank?
Cheers.