{"product_id":"kastar-bp-u90-battery-and-dual-fast-charger-replacement-high","title":"Kastar BP-U90 Battery and Dual Fast Charger Replacement - High","description":"\u003cp\u003eIn this review the Kastar BP-U90 replacement kit is tested as an alternative power solution for professional Sony camcorders. It is aimed at shooters who need long runtime and fast turnaround between takes, and the single biggest reason to consider it is the pair of high-capacity 8700mAh batteries combined with an LCD dual fast charger that can top up two batteries simultaneously. The review focuses on run time, charger intelligence and build compatibility with a range of PXW and PMW series cameras.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eUltra-high capacity:\u003c\/strong\u003e Each battery provides 8700mAh at 14.4V, giving extended runtime for long shoots and fewer battery swaps on location.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eJapanese cells:\u003c\/strong\u003e Uses high quality Japanese cells for longer battery life and reduced memory effect over repeated charge cycles.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDual fast charger:\u003c\/strong\u003e The Kastar LCD dual charger can charge two batteries at once and displays charge status and battery capacity on the screen.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWide voltage compatibility:\u003c\/strong\u003e The charger accepts batteries from 6.8V to 16.8V and the MCU automatically identifies voltage to deliver intelligent charging and prevent overcharge.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReliable charge method:\u003c\/strong\u003e Charging follows CC\/CV with pre-charge and 0V activation for drained Li-ion cells, which helps recover and extend battery life.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWho It's For\u003c\/h2\u003e\n\u003cp\u003eThe kit is best for professional videographers and ENG operators using Sony PXW and PMW series camcorders who need long runtimes and the convenience of charging multiple batteries overnight or between shoots. The high-capacity cells are particularly useful for handheld documentary work, event coverage, or any situation where AC power is limited.\u003c\/p\u003e\n\u003cp\u003eThose who should look elsewhere include users who require manufacturer warranty support tied to OEM batteries or those who need lighter, lower-capacity batteries for smaller rigs; the Kastar pack is optimized for endurance and fast charging rather than compact weight savings.\u003c\/p\u003e\n\u003ch2\u003ePros \u0026amp; Cons\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003ePros\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eHigh 8700mAh capacity delivers noticeably longer run times versus typical OEM mid-capacity packs.\u003c\/li\u003e\n\u003cli\u003eDual fast charger with LCD makes it easy to monitor two batteries and return to shooting faster.\u003c\/li\u003e\n\u003cli\u003eSmart MCU charging prevents overcharge and handles a wide voltage range for compatibility.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eThe battery and charger are third-party components, so users seeking OEM-only support may prefer manufacturer-branded units.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\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\u003e14.4V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBattery capacity\u003c\/td\u003e\n\u003ctd\u003e8700mAh\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCharger type\u003c\/td\u003e\n\u003ctd\u003eLCD Dual Fast Charger, CC\/CV\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCharger voltage range\u003c\/td\u003e\n\u003ctd\u003e6.8V - 16.8V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSpecial features\u003c\/td\u003e\n\u003ctd\u003ePre-charge, 0V activation, MCU intelligent identification\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch2\u003eOur Verdict\u003c\/h2\u003e\n\u003cp\u003eThe Kastar BP-U90 battery and dual charger kit is a strong value for professionals who need extended runtime and reliable, fast recharging. With high-capacity Japanese cells and an intelligent LCD charger that handles two batteries at once, it reduces downtime on location and suits a wide range of Sony PXW and PMW camcorders. It is a practical choice for endurance-focused shooters who accept third-party components for better runtime and charging convenience.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eWill these batteries fit my PXW-FS7 camera?\u003c\/strong\u003e\u003cbr\u003eYes, the kit is listed as compatible with PXW-FS7 and related PXW\/PMW models that use BP-U series battery plates.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan the charger handle two batteries of different voltages?\u003c\/strong\u003e\u003cbr\u003eYes, the charger MCU automatically identifies battery voltage and supports charging batteries within the 6.8V to 16.8V range.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDoes the charger support 0V activation for fully drained cells?\u003c\/strong\u003e\u003cbr\u003eYes, the charger includes pre-charge and li-ion 0V activation functions to recover and extend battery life.\u003c\/p\u003e","brand":"Kastar","offers":[{"title":"Default Title","offer_id":48741557633243,"sku":"B085T8ZHXH","price":179.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/814FiNmLrcL._AC_SL1500.jpg?v=1778923067","url":"https:\/\/gearmusthave.com\/products\/kastar-bp-u90-battery-and-dual-fast-charger-replacement-high","provider":"GearMustHave","version":"1.0","type":"link"}