Just wanted to reassure anyone buying these 3rd party batteries from this company. I ordered direct rather than Amazon.
Had a "dud" issue with the new BP511 I purchased (POWWER for BP511 replacement 2000mAh). They're shipping the replacement and informed me to either ship the "dud" back and they'll reimburse me the cost of shipping...or....keep the dud and dispose of it.
Top notch service.