diff --git a/modules/libpref/init/all.js b/modules/libpref/init/all.js
index 4222fff707..76db1166a2 100644
--- a/modules/libpref/init/all.js
+++ b/modules/libpref/init/all.js
@@ -4722,7 +4722,8 @@ pref("dom.vibrator.max_vibrate_ms", 10000);
 pref("dom.vibrator.max_vibrate_list_len", 128);
 
 // Battery API
-pref("dom.battery.enabled", true);
+// Disabled by default to reduce private data exposure.
+pref("dom.battery.enabled", false);
 
 // Push