Lumintop Tool AA 2.0 flashlight

The EE must have been out that day the resistor value was chosen. :person_facepalming:

I think the Tool AA 2.0 may not have LVP, so maybe a protected battery is suggested?

It has LVP set at 3V

So what if you don’t want the battery drain from the LED tail but you still want to use 14500 batteries? Is there a simple solution?

Turn the head 1/4 turn to break contact.

LOL — don’t like doing that. Is there another simple option?

Yokiamy, can you please share the source of your information? because I dont know who to believe:

If you want to keep the tail light and use 14500, nope.

Don’t really need the tail light. Does that open up any other solutions?

Yeah, just remove the leds so no lights at all on the tail.

I'll take a look at that and see if it is something I can do with my lack of skills. Thanks

If you can take the tail switch apart, you can remove the leds imo.

more AA Tool on 14500, LED tail discussion here:

When the light is turned on the driver is running with the firmware, checking for LVP. When you turn it off, the driver is off (switch breaks connection) and not checking a thing. The lighted tail switch is working in backwards polarity compared to the driver. No power to driver, lighted tailcap power is on and no LVP. The lighted tailcap will drain your battery dry while the driver is sleeping :smiley: .

My own
I only have three, a Ti, an upgraded Ti and a Cu.

thanks for the info Yokiamy
I see moderator007 also says there is LVP on LiIon…

is this a complete Low Voltage Shutoff at 3v?

or just a Low Voltage Warning that only blinks or somesuch, and then continues to drain…?

I haven’t checked mine to be sure, but I assume if the light is on and hits the low voltage to trip LVP the driver goes to sleep or continues to check voltage to know when to wake back up. Either one I would think would be a very low power consumption. After LVP kicks and you turn the light off then the vampire lighted tail cap would kick in again.
To solve this defect, you would either need to change the lighted tail pcb out for something like gchart has done or change the current limiting resistors out to a higher value (something up in the 100k range) but the tail cap will be pretty dim then and only be seen when its dark (switch boot is not very transparent). Then there’s always the option of just removing any of the components that make up the lighted tail cap pcb (leds or resistors) but then you have no lighted tail cap.
.
Maybe Yokiamy can answer the question on weither it blinks or shuts off with LVP. :+1:

> After LVP kicks and you turn the light off then the vampire lighted tail cap would kick in again.

I was impressed at the level of detail in your comments about the tail vampire… I gave the CuTool AA to a good friend, that only speaks Alkaleak… so no concern over the tail LEDs

but yes, on LiIon, the lighted tail would be a non starter in stock form… I agree an interventioni would be required to drive a stake through the vampires heart… LOL

It looks like it completely shuts off

thanks, looks useful
plenty of warnings that its time to change cells

with dimming before sudden darkness