[DonRotolo]

1A @ 20% = 0.2 Ah, x24 = 4.8 Ah per day. That's close to the 20 hour setup they use to measure Ah capacity, so it's close to a real number. That discharges the battery 100% though. An FRC battery would do well. YMMV especially if your numbers are off.

Is theft a consideration? If so, lock the whole thing in an ammo case, chained to the bench. Worst case they cut your wires and steal the LEDs. Think water-tight though.

Solar: a 2A panel for 6 hours = 12 Ah.