I agree but generally, the low-Z of a battery source, unless long wiring is used, should be sufficient. To be honest, I was thinking of the 24V either being a battery charger or a battery under charge so AC line ripple was present. It takes quite a lot of current to explode a cap like that. If HF ripple from it's own switcher is the problem, a good quality non-electrolytic capacitor across the input should help.
I use a bank of five very similar modules in a multi-output PSU here but I have them mounted on a heat sink side by side with a thermal pad under them. They have been working for more than two years without any problems. One float charges a Pb battery, one powers a CPU module and the others power cameras and various AC control modules.
Brian.