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If you have any questions, please don't hesitate to reach out. Our dedicated team is here to assist you with a smile and make your experience hassle-free. Thank you for choosing Kastar!
CONVENIENCE OF LIFE
Kastar, an enterprise with over 20 years of manufacturing experience and excellent reputation, is a famous and professional manufacturer in electronic products, which include lithium-ion, polymer and Ni-MH/Ni-CD batteries, chargers, and other electronics.
We have passed ISO9001 quality system certification and ISO 14001 environmental management system certification successively. Our products have passed UL, FCC, CE, ROHs and CCC certifications. We have received numerous awards, patents and titles. Such as high-tech enterprise with "Technology Innovation Award" and state-level high-tech enterprise.
At present, we take environmental production as our priority and devote ourselves to high performance battery development. The company is aimed at offering high quality products and best service for long term co-operations. We will work hard to serve you and build up a bright future.
Our Company Slogan is "CONVENIENCE OF LIFE", meaning we will do our best to bring convenience to your life.
VICTOR MARES
Reviewed in the United States on February 4, 2025
One thing to keep in mind is that aftermarket batteries will never be superior to the original Sony brand. The battery does the job however, I feel it drains out a tad faster.
Gary Kitchen
Reviewed in the United States on February 17, 2025
As good as an OEM Sony battery, excellent runtime with plenty of reserve power. Fits and functions exactly like a factory Sony battery. LED level indicators show approximate charge state when pressed.
IREZ
Reviewed in the United States on March 3, 2024
Great long lasting battery
MM
Reviewed in the United States on November 1, 2024
Great purchase, especially for the price. Gives me over 4 hours of battery life on my FX6, and they’re compatible with the Sony charger -
Customer
Reviewed in the United States on August 19, 2023
Battery works great but doesn't come with a charger.
Raymond U
Reviewed in the United States on December 26, 2021
I got two of these used as part of a recent used FS5m2 purchase. They were totally depleted when I got them home, but they charged just fine using the Sony and Kastar chargers.Not sure if 2 batteries would be enough for recording 8-10 hours of action sports footage with no AC power possible, I bought this as a spare, to go with the Sony BP-U30 and 2x identical Kastars.I bench tested continuous recording, and I was able to record more than two hours of continuous footage from each fully-charged battery, over two charge cycles. I didn't test it down to the last minute in the field, I swapped the battery for a fresh one when it hit less than 25%. I recorded all the footage I had planned to getIn the field, these batteries performed remarkably well. The batteries easily lasted two hours of continuous recording each. Now, I was conserving power by turning off the viewfinder after framing my shots and starting recording, so I don't know how long they will last while shooting with viewfinder on, will come back for that.Despite some others' complaints, these batteries worked out for me, and for a big savings compared to the brand-name battery.
David Patterson
Reviewed in the United States on August 19, 2017
These are a great alternative to uber-expensive SONY batteries. I have been using these with my SONY FS5 and very pleased with their performance. I can't compare the battery life with the same capacity SONY battery, but as they are sooooo much less expensive, I highly recommend them. Some people claim 3rd party batteries will reset the camera's clock, but I haven't experienced that with these batteries in my FS5.
kramer549
Reviewed in the United States on May 20, 2017
These batteries seemed like a great deal at first, and despite my skepticism I decided to order two of them for use with my FS7. They worked fine for a while, but both of them ended up completely dying and shutting off the power to my camera in the middle of a crucial shot. Even though the battery LED indicators said that it had 100% power, they're now basically useless and won't power on at all. I've tried power-cycling it over and over, leaving it on charge for large amounts of time, plugging it into other cameras/accessories that take the same battery, and no luck all around. Tried contacting Kastar for customer service to see if I could get a replacement shipped out, but no luck. I am willing to change this review if the company makes it right and sends me replacements. Other than that, I would say either go with name brand batteries or just bite the bullet and go with V mount.
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