{"product_id":"kastar-np-f550-np-f570-4-pack-battery-and-ltd2-usb-charger-dual","title":"Kastar NP-F550 NP-F570 4-Pack Battery and LTD2 USB Charger - Dual","description":"\u003cp\u003eIn this review the Kastar 4-Pack NP-F550 \/ NP-F570 battery kit is evaluated for independent filmmakers and DSLR monitor users who need reliable on-camera power. The bottom line: this kit delivers a straightforward, portable solution for powering FEELWORLD FW703 and FW759 style field monitors, and it stands out for offering four 2900mAh lithium-ion batteries plus a USB-powered LTD2 charger that can top two batteries at once. The reviewer found the package useful for long shooting days where swapping hot batteries quickly is essential.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh capacity batteries:\u003c\/strong\u003e Each 2900mAh, 7.4V lithium-ion cell provides extended run time for small field monitors so users can shoot longer between swaps.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDual battery charging:\u003c\/strong\u003e The LTD2 USB charger can charge two batteries simultaneously which reduces downtime on set when multiple spares are required.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInterchangeable plate:\u003c\/strong\u003e The charger supports changing the plate to charge different battery plates, adding flexibility for various camera and monitor models.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUSB power options:\u003c\/strong\u003e With both Micro-USB and Type-C inputs and a 5V 2-3A input requirement, the charger is easy to power from power banks or common USB adapters for location work.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClear charging status:\u003c\/strong\u003e Intelligent LED indicators show charging progress and battery capacity so operators know when cells are ready without guessing.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eWho It's For\u003c\/h2\u003e\u003cp\u003eThis kit is aimed at video shooters who run small on-camera or external field monitors such as FEELWORLD FW703, FW759 and similar 7 in models and need multiple spare batteries to cover long shoots. The included charger is a practical choice for solo operators who value compact, USB-chargeable accessories.\u003c\/p\u003e\u003cp\u003eIt is not targeted at users of larger cinema batteries or those who need very high output charging stations; professionals who require rapid multi-bank charging for large battery fleets should look at dedicated studio chargers instead.\u003c\/p\u003e\u003ch2\u003ePros \u0026amp; Cons\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003ePros\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eFour high-capacity 2900mAh batteries give substantial extra runtime for monitors and small rigs.\u003c\/li\u003e\n\u003cli\u003eCharger can handle two batteries at once, speeding turnover during long shoots.\u003c\/li\u003e\n\u003cli\u003eUSB inputs including Type-C make it easy to power the charger from modern power banks or adapters.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\u003cli\u003eThe charger output is optimized for monitor-style plates and may not suit larger camera battery systems.\u003c\/li\u003e\u003c\/ul\u003e\u003ch2\u003eSpecifications\u003c\/h2\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eBattery type\u003c\/td\u003e\n\u003ctd\u003eLithium-Ion\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBattery voltage\u003c\/td\u003e\n\u003ctd\u003e7.4V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBattery capacity\u003c\/td\u003e\n\u003ctd\u003e2900mAh\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCharger input\u003c\/td\u003e\n\u003ctd\u003e5V 2-3A (15W)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCharger output\u003c\/td\u003e\n\u003ctd\u003e8.4V 800mA x1 or 800mA x2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatibility\u003c\/td\u003e\n\u003ctd\u003eFEELWORLD FW703, FW759 and similar NP-F550\/570 plate monitors\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch2\u003eOur Verdict\u003c\/h2\u003e\u003cp\u003eThe Kastar 4-pack with LTD2 USB charger is a practical, cost-effective choice for camera operators who power 7 in field monitors and need multiple reliable spares. It balances capacity, portability and USB charging convenience, making it good value for run-and-gun shoots and location work where standard USB power is available.\u003c\/p\u003e\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003eWill these batteries work with FEELWORLD FW703 and FW759?\u003c\/strong\u003e\u003cbr\u003eYes, the pack is compatible with FEELWORLD FW703 and FW759 style monitors that accept NP-F550\/NP-F570 plates.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan the charger charge two batteries at the same time from a power bank?\u003c\/strong\u003e\u003cbr\u003eYes, the LTD2 supports dual charging with a 5V 2-3A input and can be powered by a suitably rated power bank or USB adapter.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the kit include a USB cable?\u003c\/strong\u003e\u003cbr\u003eYes, a Micro-USB cable is included and the charger also accepts Type-C input when used with the appropriate cable.\u003c\/p\u003e","brand":"Kastar","offers":[{"title":"Default Title","offer_id":48656129884379,"sku":"B0B2ZM1VKL","price":37.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/71u567RT14L._AC_SL1500_a7b39bfe-9653-4388-a0a0-ac90aa5fdb84.jpg?v=1778540850","url":"https:\/\/gearmusthave.com\/products\/kastar-np-f550-np-f570-4-pack-battery-and-ltd2-usb-charger-dual","provider":"GearMustHave","version":"1.0","type":"link"}