Its a IMR safer chemistry battery, the lavatube itself should have a protection circuit build into it.
From the LT specs "Short Circuit/Atomizer
Protection
Reverse Battery Protection -
Protects against reverse battery installation.
Battery
Monitoring/Over-Discharge Protection – Device should monitor the battery
voltage and automatically turn off when the battery is discharged.
Amperage Limiting to 2.5 amps –
The device should monitor and shut itself off if it detects any excessive
over-current conditions.
Vent hole on the bottom of the
device for added safety"