18650 battery question

What 18650 cells should i buy to get maximum lumens? In other words, what cells drive flashlights to their max potential?

Anyone? I’m sure we got some battery experts here. :bigsmile:

That depends on the light. Some lights need very high current (i.e. IMR cells), other needs as high cell voltage as possible (Look at 2600mAh batteries) and most multi battery lights does not really care.

Thankyou so much for the reply man. What about for a Thrunite TN31?
http://www.thrunite.com/en/Productdetail.aspx?BClassID=68&ClassID=117

Find some 3100mAh or 3400mAh cells using using Panasonic cells, not cheap eBay ones claiming to be 3400mAh.

the TN31 is quite high end, and the LED is driven to the limits, you will definitely need some high mA output batteries for it to work well, like 2900mAh or above. like bose said good batteries, cheap ones cannot deliver enough current to power them, so it flickers/steps down. i know a rough idea of how lithium ions work, but HKJ and otheres here will explain it much better

The TN31 drives the XML at 3.5amps.

3.5/3 = 1.17 amps per battery, but let’s assume the driver isn’t 100% efficient, so let’s bump it up to 1.3amps per battery (3.9A total).

Most batteries should be able to handle 1.3 amps, so your orbtronics should be able to handle it.

EDIT: If you suspect your batteries are faulty, try investing in these. They’re at a great price, plus they’re highly recommended by a lot of BLFers.

It will give maximum brightness with just about any 18650 battery. If you want maximum runtime you have to get the batteries with most mAh (A xxxFire with 5000mAh does not work). Check my battery tests to see what batteries has the most mAh.

Thank you guys for all your help.

EDIT: If you suspect your batteries are faulty, try investing in these. They’re at a great price, plus they’re highly recommended by a lot of BLFers.
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Hey Slewflash,
Did you have any probs with shipping to Oz?
A good price indeed! I’m thinking 8.

Hey Slewflash,
Did you have any probs with shipping to Oz?
A good price indeed! I’m thinking 8.
[/quote]

Hi rexdog, I personally haven’t bought from bestvaping myself but I bought 10 of them from aliexpress. I think some people have bought from bestvaping before but I can’t say myself how their service is.

Shipping should be fine though, I don’t recall them ever not shipping to Oz though.