Few ideas for batteries...

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newb

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I dont know if this is possible but it would be pretty cool if the LED on the end would change colors indicating battery level. For example:
  • Blue = Full
  • Green = Half
  • Red = (or Flashing as usual) Low / Recharge
Also, on manuals I hate not knowing if the battery is working so I always use my finger to reflect the LED so I can know what is going on...

It would be nice to have a lighted button or to extend the visibility of the LED by making it a cap so you can see it while taking a draw.
 

empnero

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While its prob a PITA to do that, my friend has been saying the same thing. He hates not knowing till it flashes, he keeps whining that he wishes there was a level indicator on the side or bottom (because again, who looks at the top. To me, I always have a 2nd fully charged batt in case it dies so an indicator is not too important, but would be nice.
 

newb

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Battery life monitoring on Lithium* batteries is VERY difficult. Made far more difficult by the limited physical space available. In a large mod - sure. Expensive, but doable. In these tiny things? Not nearly as likely.

Yeah.. Kinda figured.. Like I said in my original post, I dont know if this is possible and you cleared it up...

Would it be expensive to create an adaptor with and LED that would go between a carto and a battery? Not for battery level indication... simply to know its working and not misfiring..

It would look like a 901 to 510 adapter but a clear plastic with an LED inside that would turn on when taking a draw..
 

Adrenalynn

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Sorry - I wasn't meaning to rain on your parade. And there are "fuel-gauge processors" out there that are complete SOC to do it. I just can't find one in those tiny form-factors, and I've really looked.

An adapter to fit in between would be very easy. LED, resistor, two connectors, a chunk of acrylic. Cheap in China, gawdawful expensive here. The silly connectors are a couple dollars each. I could build what you're looking for, one off, for probably $6. $3 in MOQ 1000. In China, probably $0.15 BOM, probably $0.75 to V4L, probably $1.99 on the shelf.
 
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