CommentStreams:A8d25b9601c20daa7faf231f8958ecd2

< WEMOS ESP32 Board with 18650 Battery Holder
Revision as of 08:38, 4 July 2021 by 217.233.103.129 (talk) (Migrated comment #1617)
(diff) ← Older revision | Latest revision (diff) | Newer revision → (diff)

I am looking for schematics of this board. I don't understand how the battery supply is supposed to work. The 18650 can deliver 3.7V under load. The AMS1117 has a dropout voltage of 1.1V, so in order to keep the ESP32 running at 3.3V it would need at least 4.4V on the battery which is more than it has. Even at the minimum voltage for the ESP32 of 2.55V, it would still need 3.65V from the battery which means the voltage regulator would cease to work very quickly while the battery still has lots of charge remaining? I don't see any DC-DC booster or anything which would explain the riddle? Does anyone know?