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Two rectangular batteries and a compact LCD USB charger with micro USB cable

Kastar

Kastar BT-65Q 2-pack battery & LTD2 USB charger camera battery

SKU CH-39G5-HC72X

Two 7.4 V 5800 mAh lithium-ion batteries and an LCD USB charger that powers three cells simultaneously from any 5 V source

  • Total capacity42.92 Wh
  • Pack contents1 Charger + 2 Batteries
  • Battery chemistryLi-Ion
  • Product typeBattery & Charger
  • Product dimensions3 × 2 × 2 in
  • Key featuresLCD USB Dual charger, can charge 2 batteries at the same tim
  • Two 5800 mAh lithium-ion batteries for long survey sessions
  • LCD USB charger powers two batteries simultaneously
  • Charger runs from any 5 V 2 A USB source
  • Intelligent LCD shows real-time charge status and capacity
  • Compatible with Topcon BT-60Q through BT-66Q and GMS-2 total stations

Replacement power for Topcon survey instruments

This kit supplies two 7.4 V lithium-ion batteries and a compact USB charger that can replenish both cells at once. It is built for field crews who need reliable backup power during long days with Topcon total stations and data collectors.

42.92 Wh capacity per cell

Each battery stores 42.92 Wh at 5800 mAh, matching the original BT-65Q specification. The charger accepts a standard 5 V 2 A USB source and delivers 8.4 V at 0.5 A to each bay, so no proprietary wall adapter is required.

Charges from any USB port while freeing AC outlets

Plug the included Micro-USB cable into a laptop, vehicle socket or portable power bank to top up both packs in parallel. The LCD readout shows real-time capacity, letting crews confirm charge level before heading back to the field.

How it compares

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

Price $55.99
Pricier than about 90% of the 5,900 comparable items (median $17.99).

Specifications

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

Questions about this item

What does 5800 mAh at 7.4 V mean for daily survey work?

The two packs store 42.92 Wh each, giving extended runtime for Topcon total stations such as the GPT-7000i or GTS-750 during long field sessions.

How does the USB charger connect and what power does it need?

The LTD2 charger draws 5 V 2 A (10 W) via Micro-USB from a wall adapter, car charger or computer and outputs 8.4 V 0.5 A to three independent bays.

Will the batteries and charger fit in my existing Topcon kit?

Each battery measures 3 by 2 by 2 inches and replaces BT-60Q, BT-61Q, BT-62Q, BT-65Q and BT-66Q packs, while the charger replaces BC-30, BC-30D and BT-30 units.

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