BM Premium 2 NP-FV100A High Capacity Batteries and Dual Bay Charger for Sony FDR-AX30 FDR-AX33 AX53 FDR-AX700 FDR-AX100 FDR-AX35 HXR-MC50 HXR-MC88 HX-RNX80 PXW-Z90V NEX-VG20 VG30 NEX-VG900 Camcorders

I’m glad I got these for my Sony 4K I really need them. They are awesome long lasting.

Fantastic service and quality product!

Evidently this battery charger will only charge the included batteries I bought two of the same type and brand batteries outside this kit and when placed on charge the charger flashes red and green let it sit all night and when I got ready to use those batteries they were dead. However when I put the batteries in the Sony FDR-AX53 they charge up just fine so don’t make the mistake I did and buy one charger for multiple batteries because they are not compatible. Only giving 3 stars because this ought to be outlined in the ad description so be aware if this is what you are doing now I’ve got to charge the two other batteries with them installed on the camera and that just takes way too long especially since they are extended capacity so am looking for a good alternative to charge multiple batteries.

Had it initiate return through Amazon. One battery seemed to work fine, the other battery would short out the charger every time I plugged it in, in both bay 1 and 2. Tried emailing the company for support from emails listed on their website [email protected] and [email protected] both emails were returned to me, saying neither email exists. I really wanted these to work. I have 2 of the non-premium np-fv70's from BMPremium and they work fine, although they do lose charge pretty quick. I would not have left this review if I could of reached BMPremium for support.

Very pleased

I purchased these batteries and charger to supplement the NP-FV70A that came with my Sony AX53 HandyCam. Using the OEM NP-FV70A (1900mAh) that came with the camera, I was able to record continuously for almost 2h50m. Recording was a steady shot with no variation throughout. Using the BM Premium NP-FV100A (3400mAh), I was only able record continuously for about 2h30m. After installing a 'fully charged' battery into the camera, Battery Info only showed about a 90% charge. Run Time was shown to be 4h30m. However, actual record time was much less. Both batteries I received tested the same. Disappointed that the batteries did not perform better than this.

One battery is completely dead can even charge this battery. The other one charge but drain battery so fast! This battery is unusable. It's terrible product, period! No customer support.

From what I can tell these batteries are an excellent choice to use with my Sony camera. I just bought them so can’t speak about their life cycle yet but are a big improvement in capability over what I originally had with the camera to start with.

Unfortunate knock off item.