3M: Welding Filte Battey CR20320, 422000 Spares for Speedglas 100 & 9000 auto welding helmets. 3M Welding Filter Battery, 422000 is our CR20320 Lithium 3 V battery designed for 3M Speedglas Welding Helmets. MPN: 422000 EAN: 04054596570917 W…View more