My new Lith Ion charger.

Hi all. I have been looking for a new charger, since I messed up my DSD. I wanted to find something a little nicer than the Ultrafires, but did not want to spend on a Hyperion or something.

I am not sure how I did, but I got a new charger. It is a Yuntong, YT-0001S. See pic.




It can be ordered w/ or w/out a AC power source. I ordered w/ out and bought one at a discount store locally. I also soldered the ends into my gutted DSD.

It has an adjustable charging rate, up to 2000ma, and 3 voltage ranges. While it took a little longer than I expected, it seems to slow the charge down to top off the battery before it signals a full charge. The batteries came off at 4.22-3v, and settled down to 4.21 after a bit.

Reverse polarity and incorrect voltage settings cause the charger to flash and stop charging.

This is only an initial action report, but so far I am happy w/ it. The case is metal. Basically, it was $47 shipped for the charger, plus the cradle of the DSD, and whatever it costs you to find a good 12v converter.

I got mine from CentralHobbies, and they were very helpful on the phone, and shipped very fast. This may be a charger to take a look at if you are in the market for one.

Any Cal. said:

The batteries came off at 4.22-3v, and settled down to 4.21 after a bit

Click to expand...

They are being overcharged. Everything above 4.2 is bad for them, and yes, hundredths of a volt can matter. Expect reduced life (but try another multimeter just to be sure).

LiIon/LiPo cells coming off my Hyperion 5i are about 4.19 and settle to 4.17 or so.

Too much voltage. Have you been researching CPF for LiIon charger recommendations?

Bill

Yes, I have been looking at suggestions. They are basically the DSD, Ultrafire, Pila, and the high end stuff.

The biggest complaint w/ the DSD was that it undercharged. The Ultrafire initially overcharged by a lot, and now supposedly overcharges a little. The Pila apparently works it's best w/ Pila batteries.

Mine can be overchargeing a little. I am not sure if it is due to the charger, or if I have some resistance in a solder joint. Either way, I don't see much reason to be too concerned about slightly shortening the life of 6 dollar batteries. If I got a dozen charges apiece out of them, they would have saved me 40 bucks or so. I am not sure that the few hundredths of a volt is going to cut that deeply into the life of the battery.

If I am shortening battery life in a large way, please show me the light. Right now, the batteries are not getting warm while chargeing, and I believe the charger I have is signigicantly better than the alternatives in similiar or lower price ranges.

All comments welcome. Thanks.