Fire hazard
It was a bit of a worry. The AA / AAA charger with the LCD display is a maplin rapid charger, and the batteries get warm. It was needed for 3 different sets, rear lights, etrex / 2 spares, & 4 for the spot tracker.
Everything else is Lithium Ion, with all the attendant horror stories. Steve carries both the 7 port USB charger (which didn't get warm) and a separate charger for the powermonkey. The AA/AAA charger is mine.
The photo was actually taken last night. Everything was fully charged before I went to bed. And we have plenty of smoke alarms plus a foam fire extinguisher in the house. I don't like leaving batteries charging overnight.