Has anyone tried the intsun 3400mah batteries? I can’t find out much about them. There’s a reasonably good review on Youtube. Alarms go off as they are cheap, £12.88 for 4 however even if they’re around 2800mah it would be a good deal.
Just ordered some for testing
Great. Now can I resist ordering before you post the results? 
Not looking good at 1A discharge - 1713mAh
Not looking good at all. 
That’s a shame. Did you get them from Amazon?
Bought from Intsun on Amazon. Just discharged a different battery at 250mA - 1498mAh
Check the discharge graphs here: Facebook
or here:
http://www.torchythebatteryboy.com/p/18650-batteries-chargers.html
Thanks, that’s a very handy site.
Have you contacted intsun to get a refund?
I didn’t yet.
Do you have a favourite “budget” 18650?
I was expecting these to be crap, but they are excellent: https://www.amazon.co.uk/gp/product/B01IVOFRBI/ref=oh_aui_detailpage_o01_s00?ie=UTF8&psc=1
Beeway 2600mAh
Intsun = Ultrafire in disguise
Actually some of these Chinese manufacturers started using old stock - Sanyo UR18650FM 2600mAh which is good cell.
Just try to ignore mAh rating printed on their cells