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A rectangular black battery and a compact dual charger with LCD screen and USB ports

Kastar

Kastar NP-F550/F570 21 Wh battery and LTD2 USB dual charger

SKU CH-BMJN-ZT695

A 21 Wh lithium-ion battery with a USB dual charger that powers two NP-F series packs at once

  • TypeBattery & Charger
  • Pack1 Charger + 1 Battery
  • ChemicalLi-Ion
  • Capacity21 Wh
  • Dimensions5*3*2 Inch
  • FeaturesLCD USB Dual charger, can charge 2 batteries at the same tim
  • 21 Wh lithium-ion cell powers compatible Sony camcorders for extended recording
  • LCD USB dual charger replenishes two batteries simultaneously from a single outlet
  • Micro-USB and Type-C inputs let you top up from power banks or wall adapters
  • Intelligent display shows real-time charging status and remaining capacity on each slot
  • Interchangeable plate design adapts the charger to multiple NP-F battery sizes

Kastar NP-F550/F570 21 Wh battery

This kit pairs a 21 Wh lithium-ion battery with an LCD dual charger that can handle two packs at once. It targets videographers and photographers using Sony Handycam, HVR, HXR or NX series camcorders that accept NP-F550 or NP-F570 cells.

Installation and common issues

The charger plugs into any 5 V 2–3 A USB source via Micro-USB or USB-C, and the battery slides into the camcorder like the original. The LCD shows charge status and capacity for each slot. Users sometimes find the charger will not start if the USB power brick cannot supply the rated current, or if a worn cable drops voltage below the threshold.

Practical limits of USB charging

The dual charger outputs 8.4 V at 800 mA per bay, so a fully depleted 2900 mAh cell needs several hours to reach full capacity. Charging two batteries simultaneously does not increase the per-bay current, and the 15 W input ceiling means the unit cannot draw more power than the USB port provides. Buyers who need faster turnaround or want to charge larger NP-F970 packs should look for a higher-current AC charger.

Highlights

  • 21 Wh lithium-ion cell powers compatible Sony camcorders for extended recording
  • LCD USB dual charger replenishes two batteries simultaneously from a single outlet
  • Micro-USB and Type-C inputs let you top up from power banks or wall adapters
  • Intelligent display shows real-time charging status and remaining capacity on each slot
  • Interchangeable plate design adapts the charger to multiple NP-F battery sizes

Specifications

BrandKastar
ModelNP-F550 NP-F570
Part NumberCH-LTD2-1B-F570-W
TypeBattery & Charger
Pack1 Charger + 1 Battery
ChemicalLi-Ion
Capacity21 Wh
Dimensions5*3*2 Inch
FeaturesLCD USB Dual charger, can charge 2 batteries at the same time

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Questions about this item

How do I confirm the LTD2 charger is working correctly after plugging it in?

The intelligent LED display shows charging status and battery capacity for each slot so you can see both batteries charging at 800mA.

What comes in the pack and what must I buy separately?

The pack includes one 21 Wh NP-F550/F570 battery and the LTD2 dual charger with a Micro-USB cable; any extra NP-F series batteries are sold separately.

Which NP-F battery version should I choose for the HVR-Z1?

The bundled 2900mAh NP-F550/F570 fits the HVR-Z1; the charger also accepts NP-F330, NP-F730, NP-F750, NP-F770, NP-F950, NP-F960 and NP-F970 plates.

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