ESP32C3 working battery voltage?

I have esp32c3 connected to li-ion 3.7 V battery.
When the voltage drops to 3.4-3.38 V the devboard is turn off.
The all capacity of battery is not used, because the working voltage is 3.0-4.2 V.
Could you, please, provide is it ok that battery only discharged to 3.4 V before turned off of devboard?

Best Regards,