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Three rectangular lithium-ion camera batteries in dark casing with gold contacts

Kastar

Kastar 3-Pack BT-65Q 7.4V 5800mAh Li-Ion Camera Battery

SKU CH-W9A9-Y4H11

Three 7.4V 5800mAh Li-Ion packs replace Topcon BT-60Q through BT-66Q and GMS-2 batteries for FC-200, FC-2200, FC-2500, GPT-7000i, GTS-750, GTS-751, GPT-7500, GTS-900.

  • Total capacity42.92 Wh
  • Pack contents3 Batteries
  • Battery chemistryLi-Ion
  • Product typeBattery
  • Product dimensions3 × 2 × 3 in
  • Key featuresHigh Capacity and Manufacture Price.
  • Three-pack delivers extended field time with 5800 mAh each
  • 4 V lithium-ion chemistry rated at 42.92 Wh per cell
  • Built-in protection guards against over-charge, over-discharge, over-voltage, over-current and over-heating
  • Replaces Topcon BT-60Q, BT-61Q, BT-62Q, BT-65Q, BT-66Q and GMS-2 batteries
  • Works with BC-30, BC-30D and BT-30 chargers across multiple total-station models

Three-Pack Replacement for Topcon Survey Instruments

This pack supplies three lithium-ion cells rated at 7.4V and 5800mAh each, matching the BT-65Q form factor used across Topcon total stations and data collectors. Survey crews and equipment managers can swap depleted packs without changing chargers or mounts.

Sustained Field Operation

Each cell stores 42.92 Wh and includes over-charge, over-discharge, over-voltage, over-current and over-heating protection circuits certified to UL 1642 and CE. The protection logic maintains stable output during long stake-out sessions and robotic tracking runs where the instrument draws continuous current for hours.

5800mAh Capacity Decides Fit

The 5800mAh rating determines whether a single battery lasts a full working day on FC-200, FC-2200, FC-2500, GPT-7000i, GTS-750, GTS-751, GPT-7500, GTS-900, GPT-9000 or ROBOTIC models. Buyers needing higher capacity per cell or a different voltage must choose another part.

How it compares

Measured against everything we stock in Camera Batteries, Grips & Chargers, at today’s prices. Recalculated every night.

Price $65.99
Pricier than about 90% of the 5,900 comparable items (median $17.99).

Specifications

Product
Brand nameKastar
Model nameBT-65Q
Part numberBA-3B-BT65Q-A
Total capacity42.92 Wh
Product typeBattery
Power
Battery chemistryLi-Ion
Size & build
Product dimensions3 × 2 × 3 in
In the box
Pack contents3 Batteries

Other versions of this model

5 more in the same range

Questions about this item

Does the 7.4 V 5800 mAh Li-ion pack run hot or draw extra power during all-day surveying?

The cells meet UL1642 and CE safety standards and include built-in over-heating, over-current and over-voltage protection, so heat and power draw stay controlled during continuous use.

Which charger must I already own to recharge these BT-65Q packs?

They are compatible with Topcon BC-30, BC-30D and BT-30 chargers.

Will the three-pack work with my older GTS-750 total station?

Yes — the batteries fit Topcon GTS-750, GTS-751, GTS-900, GTS-900A and other listed robotic and GPT models.

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