Purchase an additional battery pack for the 148 or 272 laser cap when you have lost your original one or if you want an extra one for on the go. Plugs into any USA outlet.
Battery, Battery Charger Cable
1. Charge battery for 8 hours
2. Press and hold power button for about five seconds to power on the cap. The lights on the battery will go out while the battery is in use and/or charging to conserve power.