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Four rectangular lithium-ion batteries with dark casings and gold contacts

Kastar

Kastar BT-65Q 4-pack 7.4V 5800mAh Li-ion camera battery

SKU CH-JBSZ-4XKPP

Four-pack of 7.4 V 5800 mAh lithium-ion batteries compatible with Topcon total-station and survey instruments

  • Total capacity42.92 Wh
  • Pack contents4 Batteries
  • Battery chemistryLi-Ion
  • Product typeBattery
  • Product dimensions3 × 2 × 3 in
  • Key featuresHigh Capacity and Manufacture Price.
  • High-capacity 5800 mAh cells extend field-survey operating time
  • 4 V lithium-ion chemistry matches original Topcon power specifications
  • UL 1642 and CE certified cells with multi-protection circuit prevent over-charge and over-heat
  • Four-battery pack supports continuous rotation across Topcon FC-200, FC-2200, FC-2500 total stations
  • Direct replacement for BT-60Q, BT-61Q, BT-62Q, BT-65Q, BT-66Q and GMS-2 packs

Four-pack replacement for Topcon survey instruments

This four-pack supplies 7.4 V lithium-ion cells rated at 5800 mAh each, matching the BT-65Q form factor used by Topcon total stations such as the GTS-750, GTS-751, GTS-900 and GPT-9000 series. Survey crews who run FC-200, FC-2200 or FC-2500 controllers can swap depleted packs without downtime. The bundle is not for users needing a single battery or a different voltage platform.

Capacity and runtime headroom

Each cell stores 42.92 Wh, giving extended field sessions on robotic and manual stations including the GPT-7000i and GPT-7500 models. Runtime scales with instrument power draw; heavy EDM use or continuous tracking will deplete a pack faster than light angle measurement. The pack is not suited for devices that require higher voltage or proprietary communication protocols.

Charger compatibility decides fit

The batteries charge on Topcon BC-30, BC-30D and BT-30 chargers only; other chargers will not recognise the protection circuit. Verify your charger model before purchase.

How it compares

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

Price $76.99
Pricier than about 90% of the 5,900 comparable items (median $17.99).

Specifications

Product
Brand nameKastar
Model nameBT-65Q
Part numberBA-4B-BT65Q-A
Total capacity42.92 Wh
Product typeBattery
Power
Battery chemistryLi-Ion
Size & build
Product dimensions3 × 2 × 3 in
In the box
Pack contents4 Batteries

Other versions of this model

5 more in the same range

Questions about this item

Will the 7.4V 5800mAh packs work in a GTS-750 that currently uses BT-60Q cells?

Yes — the pack replaces BT-60Q, BT-61Q, BT-62Q, BT-65Q, BT-66Q and GMS-2 batteries, so it fits the GTS-750 and other listed total stations.

How can I confirm the built-in protection circuit is active after the first charge?

The battery includes over-charge, over-discharge, over-voltage, over-current and over-heating protection; normal operation and stable run-time on the instrument indicate the circuit is functioning.

Does the four-pack include a BC-30D charger or must I buy it separately?

Only the four 7.4V 5800mAh Li-ion batteries are supplied; compatible chargers such as the BC-30, BC-30D or BT-30 are sold separately.

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