PLI( Power Level Indicator) on 3.7V?

[polarcupz]

I have a Pli Style 2 = All LED's on up to the current battery level.
This comes with resistors for 4.8v, 6.0v, 7.2v, 8.4v, and 9.6v, but my question is what resistor do I need for a 3.7v li-ion setup?
Will this work, or does it need more power?

Thanks!

[equinox13]

i have the same problem. the 4.8 is the closest to 3.7, but that only lights it up half way. i'm pretty sure these are made for NiMH batteries... i'm using the same PLI with a 7.4V setup with the 7.2V resistor. it's not an accurate reading my any means, but if my batteries are getting rather low it starts ticking them off.

[polarcupz]

i have the same problem. the 4.8 is the closest to 3.7, but that only lights it up half way. i'm pretty sure these are made for NiMH batteries... i'm using the same PLI with a 7.4V setup with the 7.2V resistor. it's not an accurate reading my any means, but if my batteries are getting rather low it starts ticking them off.

I should be able to cut a resistor to size that would work for 3.7v, but I don't know the one to use. The one for 4.8v would be too high which is why it only lights up half way. Maybe Tim or someone else can post some specs for this so we can see what resistor would work. :D

[RevengeoftheSeth]

Give me the resistor value for the 4.8 and the 6.0V and I will tell you what you need for 3.7

[polarcupz]

Give me the resistor value for the 4.8 and the 6.0V and I will tell you what you need for 3.7

4.8v resistor 100K Ω +-1% tolerance
brown-black-black-orange-brown

6.0v resistor 140K Ω +-1% tolerance
brown-yellow-black-orange-brown


I used the following link to figure the 5 bands out, becuase the chart I have only had 3...
http://samengstrom.com/nxl/10116/5_band_resistor_color_code_page.en.html

The little stickers are a pain to get off.

[equinox13]

my multimeter says the following.

4.8V - 95k ohm
6.0V - 120k ohm
7.2V - 162k ohm
8.4V - 195k ohm
9.0V - 260k ohm

just off hand, if it works right with 3.7V i would say it's around 60-70k ohm based on that.

oh and they're all 1/4 watt resistors.

[polarcupz]

my multimeter says the following.

4.8V - 95k ohm
6.0V - 120k ohm
7.2V - 162k ohm
8.4V - 195k ohm
9.0V - 260k ohm

just off hand, if it works right with 3.7V i would say it's around 60-70k ohm based on that.

oh and they're all 1/4 watt resistors.

Hmmm...must have entered the colors backwards...in that case the 4.8V should be 100K, and the 6.0V would be 140K. I will edit my post above.

Thanks for telling the wattage; I have hundreds of 1/4 watt resistors. :D I just need to find the right one.

[equinox13]

my multimeter hasn't been recalibrated in a generation at least and i've noticed that it reads a bit low on the higher resister levels. under 200 it seems to only be an ohm or two off though, so i'm sticking with it. ^_^ besides that, the punch buttons are awesomeness!

i would go with those numbers.

[polarcupz]

From my calculations, the one I am looking for should be an 75k or 82K ohm resistor.

[Rhyen Skytracker]

Another thing to consider about the Li-Ion batteries is the cut off voltage built into the protection board. You need to make sure that the PLI is scaled from the cut off voltage to the max voltage.

[polarcupz]

Another thing to consider about the Li-Ion batteries is the cut off voltage built into the protection board. You need to make sure that the PLI is scaled from the cut off voltage to the max voltage.

I can't program the pli to cut off at 2.75v, but it would be nice...I guess I just have to read it when it gets down to a few leds.