Emitter Test Results pt4: XML2, XP-E2, XP-G2, and Nichia219! (along with sinkpad tests)

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pilotdog68
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If I ran an XM-L2 or XP-L off of 4S lithium AA’s, would the emitter and driver survive? (Qlite)

My Favorite Modded Lights: X6R, S8 , X2R , M6, SP03

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djozz
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pilotdog68 wrote:
If I ran an XM-L2 or XP-L off of 4S lithium AA's, would the emitter and driver survive? (Qlite)

First, AA lithium primaries do not like currents above 1A very much, the capacity suffers and at 3A the voltage is not really stable (I look at HKJ's review of the Energizer Ultimate Lithium AA: http://budgetlightforum.com/node/23846 ).

That said, at 3A the voltage is between 1.2 and 1.3V, so four in series would be max. 5.2V theoretically, but there's losses from springs (in a 4x-carrier there's at least four of them), switch etc. The Qlite MCU can have 5.5V so you will be fine in that aspect.

pilotdog68
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This would be for an emergency light in my vehicle. It would be 4S and 2or3P, so the current would be split up, and I’d probably only do 2amps to the emitter as runtime is key. So the XM-L2 can handle it without issue?

My Favorite Modded Lights: X6R, S8 , X2R , M6, SP03

Major Projects:  Illuminated Tailcap, TripleDown/TripleStack Driver

Mitko
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I got somе XPG2 S3 2A samples this friday, and today i decided to test them with A17DD V024 wights driver, expecting 4amps or so, but to my surprice they are driven with a fresh battery( 25r) at 5.5amps…

5.5amps…will the emitter last( in Convoy C8 lets say) at that current? Cause i like the result alot

PMed djozz ofc :bigsmile:

KawiBoy1428
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Mitko is this a tail cap reading or at the emitter?

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Mitko
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Tail, sorry for not mentioning it at first place

djozz
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Mitko wrote:
I got somе XPG2 S3 2A samples this friday, and today i decided to test them with A17DD V024 wights driver, expecting 4amps or so, but to my surprice they are driven with a fresh battery( 25r) at 5.5amps... 5.5amps...will the emitter last( in Convoy C8 lets say) at that current? Cause i like the result alot PMed djozz ofc :bigsmile:

The current at which the XP-G2 blows thusfar seems to be the same current at which the XM-L2 blows: the old batches at about 9A, newer batches around 7 (from what I hear, I have not tested a newer XP-G2).  That is not surprising because they seem to have the same size bondwires. The difference is that the XM-L2 increases output up to when the bond wires fry, but the XP-G2 is over the maximum output and the output already is less than max and turns blue when the wires go.

The XP-G2  is about at its max at 5.5A, which is nice because during battery drainage the current will drop but the output will be quite steady for a while Smile

Mitko
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10x, i knew youll help – thats C8 setup is actualy a very good choice for light FL setup when you hunt- the strange part is that i`ve bulded several XPG2 S2-3 C8s, but with that driver i usualy get 4….4.5amps max, it seems those samples have lower Vf

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