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Title: Kastar 2-Pack Replacement Battery for Topcon Total Stations  
Category: Electronics  
Brand: Kastar  
Description: High-capacity lithium‑ion batteries that fit Topcon BT-60Q, BT-61Q, BT-62Q, BT-65Q, BT-66Q, GMS-2, and compatible with BC-30/BC-30D/BT-30 chargers.  
Details: 7.4V, 5800mAh per cell with built‑in UL1642 &

Price is $