Asada Rechargeable Vacuum Pump 4CFM-BN VP-400 (without battery)

Battery-powered vacuum pump that can operate continuously Runs for up to 1 hour with Makita batteries (18V/6A battery x pcs *sold separately) Auto switching function Before the battery L runs out, the LED lamp will flash and the buzzer will start sounding. When the battery runs out, the LED lamp will turn off, the buzzer will stop, and the battery will switch to battery R. If you replace dead battery L with a spare battery, when battery R runs out, it will switch to battery L again. If you continue to attach a charged battery, it will switch to L-R-L-R, allowing you to operate for a long time.