You are joking... Right?
They are probably old, buy new ones.
charlise had been on battery for around 10 hours. That is doing very well and those batteries are in good condition IMHO. As well as charlise appears to understand battery Amp Hours related to the batteries and consumption of the energy from those batteries to keep the lights on for an extended time.
As stated above, my very bad batteries (in your opinion?) lasted only 11.75 hours. Dang.
I'm guessing that Fulano is a joker. So. lol
I'll also note that with our changing to LED bulbs, I do see a lesser power consumption that my batteries last quite a bit longer. We have lots of security night lighting and all the mainly used indoor bulbs have been changed to the LED.