With other parts, that may or may not be needed, I don't know, you might be around $1k but this allows Daisy chained batteries.
Hydros Kraken Controller - CoralVue
The HYDROS Kraken combines a powerful aquarium controller with eight 24V DC outputs and an industrial-grade power supply. It minimizes wire clutter and supports essential equipment control, with additional ports for 12V devices and battery backup. Intelligent and adaptable, it can manage up to...
topshelfaquatics.com