...........In my limited knowledge i thought that the 650mAh was stronger than the 550mAh. Thanks for any input!
Hi Marfenix, I just wanted to respond to this part of your comment.
I've had to learn that this is not necessarily the case. Check out this link from HKJ, a battery guru who frequents CPF:
http://lygte-info.dk/review/batteries2012/Common18650comparator.php
Now select Samsung 18650 -30Q (3000mah), and Samsung 18650 - 35E (3500mah) in the other side, just as an example. Choose 5A and then compare that to 15A. Which one is "stronger" depends upon the current draw. In this case, the extra 500mah might be a dim candle running for 2 days when in practical use the batteries would be on charge and the light has underperformed for the entire curve up to that point (I'll call it "usable capacity"). Unless it's a zombie apocalypse, of course, and you need your light to just keep going...... [emoji3]
Generally speaking, the higher the capacity the less a battery is able to perform in super high drain applications. [emoji106]