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Kastar BT-65Q lithium-ion battery and LTD2 USB charger with LCD display

Kastar

Kastar BT-65Q 5800mAh Li-Ion Battery & LTD2 USB Charger

SKU CH-8JCS-VAYGK

Lithium-ion 5800 mAh pack with LCD USB charger that powers up to three batteries from any 5 V source

  • Total capacity42.92 Wh
  • Pack contents1 Charger + 1 Battery
  • Battery chemistryLi-Ion
  • Product typeBattery & Charger
  • Product dimensions3 × 2 × 2 in
  • Key featuresLCD USB Dual charger, can charge 2 batteries at the same tim
  • 5800mAh capacity powers long survey sessions
  • 92 Wh lithium-ion cell replaces Topcon BT-65Q
  • LCD USB charger shows status and charges three batteries
  • 5 V 2 A input runs from wall, car or computer
  • Compatible with GTS-900, GPT-9000 and robotic total stations

Battery and charger for Topcon survey instruments

The Kastar BT-65Q pack supplies a 7.4V lithium-ion cell rated at 5800mAh and 42.92Wh together with an LTD2 USB charger. It replaces the original BT-60Q, BT-61Q, BT-62Q, BT-65Q and BT-66Q packs used in GTS-900, GTS-900A, GPT-9000 and robotic total stations. Survey crews needing a spare or replacement power source for compatible Topcon gear are the intended users.

USB power limits and multi-cell charging

The charger draws 5V at 2A (10W) from any USB wall adapter, car charger or computer port via the included micro-USB cable. It delivers 8.4V at 0.5A to each bay and can charge up to three batteries simultaneously. An integrated LCD shows individual charging status and remaining capacity so operators can monitor progress in the field.

Compatibility check before ordering

Verify that your instrument accepts one of the listed battery models such as BT-65Q or GMS-2 and that your existing charger is a BC-30, BC-30D or BT-30 unit. The package includes only one battery and the LTD2 charger; additional cells must be purchased separately if you need to run multiple stations or keep hot spares on site.

How it compares

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

Price $28.99
Pricier than about 76% of the 5,900 comparable items (median $17.99).

Specifications

Product
Brand nameKastar
Model nameBT-65Q
Part numberCH-LTD2-1B-BT65Q-C
Total capacity42.92 Wh
Product typeBattery & Charger
Power
Battery chemistryLi-Ion
Size & build
Product dimensions3 × 2 × 2 in
In the box
Pack contents1 Charger + 1 Battery

Questions about this item

Should I pick the 5800mAh BT-65Q or a lower-capacity Topcon pack?

The 5800mAh BT-65Q stores 42.92 Wh at 7.4 V, giving longer field time than the 60Q, 61Q, 62Q or 66Q packs.

What does 5800mAh at 7.4V actually deliver on a total station?

It provides 42.92 Wh of energy, so a GTS-900 or GPT-9000 can run noticeably longer between charges than with standard-capacity cells.

What does the USB charger’s 8.4V 0.5A output limit in practice?

Each bay supplies 0.5 A at 8.4 V, so three batteries charge simultaneously but each takes several hours to reach full capacity.

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