Geomaster 14.4V/6.4ah High Output Li-ion Surveying Battery for Swiss-Style Surveying Instruments --Total Stations TM30, TM50, Ts30, Ts50. High Capacity Battery: Rated capacity of 6.4Ah providing 92.16Wh energy for extended field use. IP50 Protection Rating: Waterproof and dust-proof design ensures durability in harsh surveying environments. Wide Compatibility: Compatible with Swiss-style instruments including TM30, TM50, TS30, TS50, C10, and P20. Aftermarket Replacement: Direct replacement for GEB241 and GEB242 batteries from major manufacturers. Lightweight Design: Net weight of only 420g for easy portability during surveying operations. Multiple Charger Support: Works with CHG-221, CHG-311, and CHG-341 Pro Chargers for flexible charging. Li-ion Technology: Rechargeable Lithium-ion battery pack offering reliable power for surveying tools. Compact Dimensions: Size of 75mm x 41mm x 80mm fits easily into standard equipment cases.