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Four black NP-F batteries and a compact dual-slot USB charger with LCD screen

Kastar

Kastar NP-F550/F570 4-Pack Battery & LTD2 USB Charger for LED Video Light CN-126 CN-160 CN-216 CN-304

SKU CH-YX1J-1BSCE

Four lithium-ion batteries and a dual USB charger power compatible LED video lights and Sony camcorders

  • Total capacity21 Wh
  • Pack contents1 Charger + 4 Batteries
  • Battery chemistryLi-Ion
  • Product typeBattery & Charger
  • Product dimensions5 × 3 × 3 in
  • Key featuresLCD USB Dual charger, can charge 2 batteries at the same tim
  • Four NP-F550/F570 batteries power LED lights longer
  • 21 Wh lithium-ion cells deliver 2900 mAh at 7.4 V
  • LTD2 dual charger fills two packs simultaneously
  • Micro-USB and USB-C inputs accept common power sources
  • LCD screen shows real-time charge level for each battery

Four NP-F550/F570 batteries and dual USB charger

The pack supplies four 7.4 V lithium-ion cells rated at 2900 mAh each, plus an LTD2 charger that powers two batteries simultaneously from any 5 V USB source. Video professionals and mobile creators gain extended run-time for LED panels such as the CN-126, CN-160, CN-216, CN-304 and compatible Sony camcorders.

Replaces single-battery kits

Swapping to this kit is worthwhile when a shoot demands more than one battery cycle or when wall outlets are unavailable. The charger accepts Micro-USB or USB-C input at up to 15 W, so a standard power bank or laptop port keeps both slots active without a dedicated mains adapter.

Limited to NP-F series form factor

The LTD2 plate system only fits NP-F style packs; it cannot charge cylindrical cells, V-mount blocks or proprietary camera batteries. Output is fixed at 8.4 V and 800 mA per slot, so higher-capacity NP-F970 packs will charge more slowly than their rated current allows.

How it compares

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

Price $29.99
Pricier than about 77% of the 5,900 comparable items (median $17.99).

Specifications

Product
Brand nameKastar
Model nameNP-F550 NP-F570
Part numberCH-LTD2-4B-F570-Z
Total capacity21 Wh
Product typeBattery & Charger
Power
Battery chemistryLi-Ion
Size & build
Product dimensions5 × 3 × 3 in
In the box
Pack contents1 Charger + 4 Batteries

Other versions of this model

5 more in the same range

Questions about this item

What are the dimensions of the Kastar NP-F550/F570 4-pack battery and LTD2 USB charger set?

The set measures 5 by 3 by 3 inches, making it compact enough to fit in most camera bags or gear cases.

How do you charge the batteries with the LTD2 USB charger, and what is the common mistake?

Connect the charger via Micro-USB or Type-C input at 5V 2-3A, insert up to two batteries, and the LCD shows status; the step people miss is using a power source that delivers at least 2A, otherwise charging stalls.

When will the NP-F550/F570 batteries need replacement, and how can you tell?

Each 7.4V 2900mAh lithium-ion cell lasts 300-500 cycles; replace them when the charger's LCD shows a full charge but runtime drops below half of the original 21 Wh capacity.

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