Ian
That is only true of normal fires. But the lithium battery fires do not need any of those to start. They are 'fueled' by chemical/electrical energy and do not need oxygen. All you can do is cool them ideally flooding them with water removing the heat from the exothermic reaction.
There seems to be a couple of viewpoints on the effectiveness of water. Last recurrent there was a FAA video that compared a laptop fire suppressed with ice and another water. Ice seemed to be better at suppressing another flare up.
Simply what I saw on the video, not endorsing one method over the other.