Replacement battery for Arjo Flowtron ACS800. Specifications: 5200mAh, 14.8V, Li-ion. Compatible with: Arjo Flowtron ACS800, Air pump. Replaces: Arjo 513400-01, Arjo Huntleigh 513400-01. Arjo Huntleigh replacement battery designed for Medical devices. Ensures your device stays powered through regular use.