High parasitic drain on Fireflies PL47G2

How do I disable the lighted switch?

I notice that parasitic drain is high - I believe it comes from the switch light, which is brighter than aux on normal or low modes. At night, I have to hide the flashlight in the room it is so bright. The model I have is last year’s, the Fireflies PL47G2 with SW40 emitters. It runs on Andúril 1. I will update the firmware to 2 even though it will disable aux lights.

I use the torch on 4/7 for 45 minutes in the mornings and in 7 days, the battery has run down to 2.8v, 2.4v and once down to 2.2v. When it steps down after 2 mins from 4/7 I know the battery is depleted. When not in use, I put it in lockout mode. Voltage regulation is worse than on my Emisars and possibly the firmware update will cut off the current at a higher voltage than this.

If there is an easy way to lower current passing through the switch I’d do so but I don’t have many tools, knowhow or time. I think just cutting the wires may be easiest.

Twist the tail cap (or head) when not in use.

Unfortunately this is common with lights that have electronic switch and “gimicky” lighted switches and aux lights.

It’s a simple fix, nothing to worry about.

Thanks Zoulas, I do that often now, it is when I forget that it depletes. Maybe low tech is best. The Emisars’ lights give me useful information and they are well controlled.

It have Anduril, right? Cant you just turn off aux lights by 7clicks (or 7H) from off?
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No they’re directly connected to the cell with a resistor, they can’t be turned off, a very weird decision.

The switch light is causing me the problems. Andúril 1 lets me turn off Aux lights altogether.

Unscrewing the cap works. Nice SW40 emitter, though

It is a lot of work if you do it 25x per day. On the other hand if you unscrew it in the evening it’s more reasonable.

Yes Zoulas this looks like the answer for this drain issue. Thanks for taking the time to reply!

I suppose my question really is how easy it is to disassemble the head of the PL47G2 to get at the switch and what tools would I need to do this?

Very difficult, the driver is very well glued, the main an AUX LED leads need to be desoldered first and they’re behind a press fit bezel that is also hard to remove.

Yours and Zoulas' replies point in one direction - just unscrew the body or endcap when not using the PL47G2.

Now I understand why so many BLF members do this to their torches! I won't press the matter further. You live and learn!

Thank you thefreeman.

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Give it to some one as a gift for the new year and get yourself H04 :slight_smile:

Not a bad idea. I can buy a Skilhunt here for a reasonable price. I bought 3 flashlights in 2022, using 21700 & 26800 batteries. If the H04 or DW4 get 21700 body updates I will consider it - thanks for the recommendation. Meanwhile I will use the PL47V2 up to 5/7 and .... unscrew the tailcap.

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