Reddit reviews Bonacell NP-F960/ NP-F970 Battery 8700mAh 2Pack and Charger Kit Compatible with Sony DCR-VX2100 HDR-AX2000 FX1 FX7 FX1000 HVR-HD1000U V1U Z1P Z1U Z5U Z7U HXR-MC2000U FS700U and LED Video Light
We found 1 Reddit comments about Bonacell NP-F960/ NP-F970 Battery 8700mAh 2Pack and Charger Kit Compatible with Sony DCR-VX2100 HDR-AX2000 FX1 FX7 FX1000 HVR-HD1000U V1U Z1P Z1U Z5U Z7U HXR-MC2000U FS700U and LED Video Light. Here are the top ones, ranked by their Reddit score.
Battery Type: Li-ion; Voltage: 7.2V; Capacity: 8700mAh; Quantity: 2Battery replacement for: Sony NP-F975, NP-F970, NP-F960, NP-F950, NP-F930, NP-F770, NP-F750, NP-F570, NP-F550, NP-F530; Please see more compatible camcorder models in "Product Description"Compatible with Sony Model: Sony CCD-SC55, SC65, CCD-TR67, CCD-TR76, CCD-TRV62, TRV65, TRV66, TRV67, TRV68, CCD-TRV72, TRV75, CCD-TRV81, TRV82, TRV85, TRV87, TRV88, CR-TRV9, DCR-TRV110, TRV120, TRV130, DCR-TRV210, DCR-TRV310, TRV315, TRV320, DCR-TRV510, FDR-AX1, GV-D200, GV-D700, HVL-LBPB, and CN-160, CN-216, CN-304, YN 300 VL600 LED Video Light and More!Free car charger cable and small adapter (125/250V 6A) easily meet your different needs30 days money back and worry-free customer service guaranteed
/u/Sasquat - part of the reason they discharge so fast is they only hold 800mAh of charge.
I got tired of hassling with tiny batteries for my BMPCC and bought an [$18.90 Sony battery plate] (https://www.amazon.com/CAMVATE-Power-Supply-Camera-Battery/dp/B019LGQNMW//ref=as_li_ss_tl?ie=UTF8&linkCode=ll1&tag=battleforthew-20) attached to a [$24.99 pistol grip] (https://www.amazon.com/JJC-HR-DV-Stabilizer-Camcorder-Blackmagic/dp/B00MRNP2LA//ref=as_li_ss_tl?ie=UTF8&linkCode=ll1&tag=battleforthew-20) with a [$3.59 1/4" to 1/4" male to male threaded screw adapter] (https://www.amazon.com/niceeshop-Threaded-Double-Screw-Adapter/dp/B00QQJFNLA//ref=as_li_ss_tl?ie=UTF8&linkCode=ll1&tag=battleforthew-20) (as pictured [here] (https://photos.google.com/share/AF1QipMiOoqCXDp-rITazaYfX3C-jTXFzgxXtRvyhUx_IgodGpO6UvNJvt_T507nqwDUTQ/photo/AF1QipMs01GYIlMbgdkLriY0b_la1WY32NmPYYxKybjU?key=amdOSmd4dXRRaWVDVmVjWEZlbnc4WGVVamEtR21R)).
With this setup and a couple of 8900mah Bonacell NP-F970s ([$42.99 with charger] (https://www.amazon.com/Bonacell-Replacement-DCR-VX2100-HVR-HD1000U-HXR-MC2000U/dp/B01KQ1BIAI//ref=as_li_ss_tl?ie=UTF8&linkCode=ll1&tag=battleforthew-20)) in your bag, you can charge your batteries and they will last for weeks.
Hope this is helpful and good luck finding the right power solution for your BMPCC.