EsoxLucius wrote:
A controller display won't always provide energy budget information.
No, only in daytime. Somehow I didn't feel much need in checking my energy budget in the middle of the night so far :)...
Seriously though - there can be situations when you need to keep an eye on battery usage after dark, like running high-power inverter. Which is not something that people can do - not very often - if solar is the only source of energy, like in my case. When sun goes down, I KNOW that by the morning the batteries will be ~30 AH from full SOC.