After 1 year using of bv7000 pro I have the problem of charging the battery.
After 6 hours of charging it just 80%.
Next, from 15% to 0% and turned off less than 1 minute has passed.
And after connecting the cable the charging didn't start for a few hours.
Where I can buy the new battery? And can I use the battery of bv8000 pro (4180 mAh)? they look the same.