I'm not sure when I need to recharge. It is either by amount or after a certain number of times I used it.
For my tap&pay card I can see that I have a daily limit of 1k, but that can't be it. I suspect there is another limit of either around 100 euros or 10 usages, after which I need to recharge. And btw recharging in this case just means confirming my bunq password basically (but I need to be online for it and it loads for a long time)