SPARE BATTERY FOR LASERCAP 148-272 - 272PRO before October 2020. 
New version 272-30mins only works with models from November 2020.
New version 272PRO-7mins only works with models from Jan 2021.
Please note:
New version batteries only work with our new models 272 and 272PRO.
Please contact us if you are not sure which battery you need, as we can check with our serial numbers and customer notes. 
Our batteries only work with our LASERCAPS.  Spare battery for our 148, 272 and 272PRO-7mins, with built in  timer and cut off blimp sound.
Please note this is just a spare battery and not a Laser cap.