diff --git a/README.md b/README.md
index c98ed4d..571b90c 100644
--- a/README.md
+++ b/README.md
@@ -76,6 +76,7 @@ Stuff that you're not allowed to bring on a plane or otherwise need to send via
 - Bleach
 - Peroxides
 - Samsung Galaxy Note 7
+- Batteries >=100Wh
 - Self Balancing Scooters (Hoverboards)
 - (strong) rare-earths Magnets (really small and weak magnets, like the needle of a compass, are okay)