DiveStar Compare
Here we compare DiveStar 10k to other dive torches, LED and even HMI, which really should be in a different category, but ……
Lumen per Dollar
One of the most impressive stats……… for systems with more than one output level, we compare the highest power level / lumen output produced per dollar paid
And conversely we can present the same as
Cost of 1 lumen
Burn Times
Those 2 graphs below lists the MIN and MAX burn times in minutes for a given torch regardless of its total output in lumen or purchase price.
Another very impressive comparison, DiveStar will burn at low power 150 lumen for over 4.5 days nonstop or 14 days 8 hour night use.
Maximum output in lumen
And last, but also very important. Retail Price
Note 1. DiveStar at the lowest output of 150 lumen will burn for 6600 minutes / 110 hours, that’s more than 4 days of constant 24/7 operation or if you only use it only 8 hours of the night it will burn for more than 12 days . In comparison, PrincetonTec Shockwave LED the closest low light competitor states on their page that burn time is 26 hours (doing some maths 26 hour is about at 245 lumen output). This in itself is pretty good outcome. But still not close to 110 hours at 150 lumen.
Note 2. Some eBay items describe their torches as 6000 Lumen – using 3x Cree XM-L led’s, but according to Cree’s website www.cree.com/led-components-and-modules/products/xlamp/discrete-directional/xlamp-xml they can only be producing at most 3120 lumen as each XM-L (highest efficacy) led can only produce 1040 lumen at Max power, so their data is not included here for comparison.
Latest dive torches at the end of 2016 claims to produce 10,000 lumen using 5 or 6x XM-L2 which I see a lot on eBay. that is totally impossible as One XM-L2 can <strong>at most produce 1052</strong> lumen at max current 3A (10W) as per Cree website. So at most they can produce 5 or 6 times that. Moreover, they are powered by the smaller power pack, which should burn shorter time, but claims to be burning for longer.
Below is my revision of Gustal Solin review of 13,000 lumen TrustFire at http://www.youtube.com/watch?v=MGEFHiBvCL8 Even though this is not a Diving Torch this might also apply to some Diving torches sold on eBay. To view Gustav and my dialog you might have to scroll to 18-20 Dec 2013. According to Gustav’s test and my calculations, this torch will not produce more than 5000 lumen with the on board battery. It is impossible to jump over the Power ratio constrains in the battery electronics systems.
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Thank you for reading