Replacement battery fits 40 Integra 8 Channel compatible models. Specifications: 1200mAh, 3.7V, Li-ion. Compatible with: 12 Channel VIAFLO, 12 Channel VOYAGER, 16 Channel VIAFLO, 4 Channel VOYAGER, 4011, 4012 and 34 more compatible models. Replaces: Integra 8 Channel 4205. Integra 8 Channel replacement battery designed for Medical devices. Built to deliver the same performance as the original.