Where to get 3.7V 180mAh 08400 battery

[janezek]

Don't those things explode?

Never have problems with that.

 

[janezek]

X4 is auto battery switch on and off controled by small pcb board.

 

[janezek]

Just buy a new 510 stick battery.
View attachment 778117

Cheers
I

This battery have 280mAh capacity.
In case that have real lipo battery inside
the size is too big, battery type is then 08600 what means 8mm diameter and 60mm long.
I really doubt that lipo battery is inside.
They use capacitors instead of lipo's.