Replacement battery fits 14 Ashtech compatible models. Specifications: 4400mAh, 7.4V, Li-ion. Compatible with: Tosfy TC2230S, Deviser DS6300, Deviser DS6300C, Deviser DS6300E, Novker AV6416, Novker NK2000 and 8 more compatible models. Replaces: Tosfy HYLB-941, Deviser HYLB-941, Novker 06DQ018-01, Novker HYLB-941, Novker NOVKER-520, Ashtech 111374. Ashtech replacement battery designed for Equipm…