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Rectangular lithium-ion battery pack, dark grey plastic casing, 7.4 volt 5800 milliampere-hours

Kastar

Kastar BT-65Q Li-Ion Camera Battery 5800mAh 42.92Wh

SKU CH-4JB0-BMGQF

Lithium-ion 7.4 V 5800 mAh 42.92 Wh replacement battery compatible with Topcon BT-60Q, BT-61Q, BT-62Q, BT-65Q, BT-66Q and GMS-2 total stations

  • Total capacity42.92 Wh
  • Pack contents1 Battery
  • Battery chemistryLi-Ion
  • Product typeBattery
  • Product dimensions3 × 2 × 1 in
  • Key featuresHigh Capacity and Manufacture Price.
  • 5800 mAh capacity extends survey sessions
  • 4 V lithium-ion chemistry matches original specs
  • Built-in protection guards against over-charge and over-heat
  • Compatible with Topcon BT-60Q through BT-66Q batteries
  • Works with BC-30, BC-30D and BT-30 chargers

Replacement Battery for Survey Instruments

The Kastar BT-65Q lithium-ion pack replaces Topcon BT-60Q, BT-61Q, BT-62Q, BT-65Q, BT-66Q and GMS-2 cells. It fits FC-200, FC-2200, FC-2500, GPT-7000i, GTS-750, GTS-751, GPT-7500, GTS-900, GPT-9000 and ROBOTIC total stations. Survey crews needing a direct swap for depleted originals will find the correct voltage and connector match.

Thermal Behaviour and Power Draw

Rated at 7.4 V and 42.92 Wh, the cell delivers steady output during long field sessions without active cooling. Built-in protection circuits guard against over-charge, over-discharge, over-voltage, over-current and over-heating. The pack meets UL1642 and CE safety standards for reliable operation in varying site temperatures.

Capacity Decides Suitability

At 5800 mAh the battery extends run time between charges compared with lower-capacity alternatives. Buyers whose instruments demand higher energy storage than this single pack provides will need multiple units or a different power solution.

How it compares

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

Price $21.99
Pricier than about 65% of the 5,900 comparable items (median $17.99).

Specifications

Product
Brand nameKastar
Model nameBT-65Q
Part numberBA-1B-BT65Q-A
Total capacity42.92 Wh
Product typeBattery
Power
Battery chemistryLi-Ion
Size & build
Product dimensions3 × 2 × 1 in
In the box
Pack contents1 Battery

Other versions of this model

5 more in the same range

Questions about this item

How do I install the BT-65Q battery into my Topcon GTS-750 total station and what step is often missed?

Insert the battery into the compartment until the latch clicks securely; the step often missed is confirming the latch is fully engaged so the battery cannot shift during operation.

What maintenance or replacement will the BT-65Q lithium-ion battery need over time?

The 5800mAh lithium-ion cell gradually loses capacity with each charge cycle; replace the pack when run time no longer meets your survey requirements.

What limit appears first during sustained use of the BT-65Q in a Topcon FC-2500?

The built-in protection circuit will trigger over-heating or over-current shutdown before the 42.92 Wh capacity is fully depleted during continuous high-draw operation.

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