Replacement battery fits 6 AstralPool compatible models. Specifications: 700mAh, 4.8V, Ni-MH. Compatible with: VX Salt Chlorinator, VX 6T, VX 7T, VX 9T, VX 11T, VX 13T. Replaces: AstralPool 70313. AstralPool replacement battery designed for Equipment/Survey/Test Charger devices. Fits like the original manufacturer part.