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|   July 31, 2009 at 7:01 PM

Will this work with Lithium Ion batteries as well?

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|   January 25, 2010 at 5:33 PM

Yes, look on the first page of the datasheet. It will work with Lithium Ion batteries.

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|   August  6, 2009 at 11:30 AM

How large is the circuit board?

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|   August  7, 2009 at 8:39 AM

Can this be used in parallel or pass thru for small power requirements (e.g. in my car, I want the LiPo providing power when the car is off, but I want it to charge the battery yet still do the ~100ma to the device when it is on.

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|   October  7, 2009 at 0:37 AM

Will this work with more than one battery or is this a charger like the one that works with 3 - 7 volt input? By looking at this I am thinking that it is only for one, but I am just asking to be sure.

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|   October 19, 2009 at 11:16 PM

I wonder if I could provide the 5V from the USB

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|   October 24, 2009 at 5:57 AM

Mine smells funny when I plug it in and charge. I'm using a 9V power supply. Normal?

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|   January  6, 2010 at 7:37 AM

You shuld use a 5V regulated power supply, have a look at http://www.sparkfun.com/commerce/tutorial_info.php?tutorials_id=57

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|   November  3, 2009 at 1:31 PM

So does this auto-stop charging once the battery's full? If not, can someone link me to a schematic/part that does?

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|   November 26, 2009 at 11:54 PM

Try looking at the datasheet of the part that is clearly given

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|   December 11, 2009 at 2:19 PM

Does anyone know if a load can be attached in parallel with the battery? The datasheet of the charge ic does not say anything about this.

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|   December 16, 2009 at 1:00 PM

Can this charge the 6Ah triple cell? It says single cell Poly, not sure what if anything would happen if I hooked it up to the triple.

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|   January  3, 2010 at 9:57 AM

Comparing the schematic to the image of the product, I noticed that instead of using 2 0R11 resistors, you used one beefy "Dale" resistor. What's the value of that resistor? About 0R055?
The reason I'm asking is because I'm making a project with limited space and I want to integrate the charger.

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|   January 14, 2010 at 2:35 AM

Page 16 of the data sheet gives a formula which implies that a 110 mohm resistor will give a 1000 mA charge current. Your schematic shows two 110 mohm resistors in parallel which gives an equivalent of 55 mohms. According to the data sheet this would give a fast charge current of 2000 mA... way too much. Maybe the photo is right and there is only one 110 mohm resistor after all (???)

This charger will work on Li Ion batteries but will under charge them by about 10%. These want to be charged to 4.2V versus 4.1V for Li Polymer.

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|   January 19, 2010 at 10:55 AM

Can someone comment on how the status light should function?

I am also curious about the possibility of having a load hooked up in parallel with the battery.

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|   February  1, 2010 at 8:54 AM

The status light is on when the battery is being charged and turns off when it's finished. It is also off if the battery connected is below the proper minimum voltage (pre-charge mode). If you're charging a cell that you know is discharged (possibly too low), just leave it plugged it in and the light should come on once the pre-charge mode completes (perhaps minutes-hours later).

Btw, this can be powered from a USB but won't get the full charger current (1A) due to the USB specs.