Charger for Sigma FP which one, and other powering options

[Pikepike]

So it seems like one could use the older BC-51 charger : https://www.bhphotovideo.com/c/product/1087580-REG/sigma_d00048_bc_51_battery_charger.html

Or the newer https://www.bhphotovideo.com/c/product/1087580-REG/sigma_d00048_bc_51_battery_charger.html

I'm even tempted to consider this non-sigma version: https://www.bhphotovideo.com/c/product/837620-REG/watson_c_3623_compact_charger_f_pana_dmwblc12.html

What's better about the Sigma BC-71? Is it faster? One immediate advantage I considered is that maybe it could potentially charge from a USB power bank? 

Additionally, I'd love to hear about other ways people here like to power their Sigma FP. Seems like the simplest way is just to buy a bunch of batteries since they aren't super expensive. I realize you can't use a USB while also recording to SSD. 

[A. L.]

https://www.amazon.com/Tectra-DMW-BLC12-Batteries-Panasonic-DMC-FZ1000/dp/B078C57VM4

I have been using these Oem DMW-BLC12 batteries and tried charging with power bank. No issues so far. The battery drains as fast as the original sigma ones from the box ( < 1 hour ).

[Pikepike]

10 hours ago, A. L. said:

https://www.amazon.com/Tectra-DMW-BLC12-Batteries-Panasonic-DMC-FZ1000/dp/B078C57VM4

I have been using these Oem DMW-BLC12 batteries and tried charging with power bank. No issues so far. The battery drains as fast as the original sigma ones from the box ( < 1 hour ).

Thanks, I may order those. Still always worried about non Oem batteries but if you say you've had no issues that's good to know.