Swivel Sweeper G2 - Replacement Battery This Ni-MH battery is rated for 7.2v and fits Ontel G1 & G2 Series Swivel Sweeper Vacuums. EASY TO INSTALL so you can get back to cleaning as soon as possible! Will fit: G1 G2 G3 G4 and Max Sweeper Eight hours is the longest the battery should need to charge. Includes: 1x Rechargeable Battery