I know they are 24v, I cannot find any listing for what the wattage is.
Is there any difference in the 25w and 40w in the firmware to be aware of? I’m assuming, if the TAZ5 is standard 25w, and can run two of them at once, installing a single 40w shouldn’t be an issue?
24v 30w ceramic heater cartridge: http://devel.lulzbot.com/retail_parts/Completed_BoMs/Heater_Cartridge_EL-MS0376/heater_cartridge_EL-MS0376_BoM.ods
A 50w cartridge should be doable, but be sure to update your PID settings after making the swap: https://www.lulzbot.com/content/fine-tune-your-marlin-pid-settings
We hope this helps!