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hoober · 08.16.2009, 11:09 AM

You may all like the i-chargers from junsi and can be found here to purchase in the usa. Progressive is a great guy to deal with. The 208B is probably the best deal going right now for 20 amps and 350 watts up to 8S.
http://www.progressiverc.com/index.p...id=1&Itemid=18

I have a tiny bit of experience with increasing the voltage on lipo during the charge , since all my old packs are so worn out that I can set the rate at nearly anythig I want and they will hit the cv stage very early (sooner) in fact most times I leave all chargers set to max current and even on a tiny battery if the rate goes over the max at the beginning it's no big deal.

Here's what I did after most said I was crazy: My theory was that it wasn't the high voltage that ruined a lipo while charging, but rather the voltage at rest above 4.25 (or whatever you like for a max) I like saying "4 and a quarter" it sounds nice. Anyways I figured that whatever the voltage was up to the full mark was going to be ok and it only climbed to 4.5 on a cheap cell. I still maintained the max current spec of the cell and charged it with CC , and eliminated the CV stage alltogether.

This allowed the cell to charge as fast as a NI cell (at a constant rate) There's no apparent cell damage or heat increase , but the trouble is predicting the "full mark" which I am working on. I'll post a graph as soon as the garage pc is up and ruinning again.

ps , std warning "don't try this at home" or the world may end. That's what most told me.

	(#11)
hoober RC-Monster Carbon Fiber Offline Posts: 174 Join Date: Dec 2007	08.16.2009, 11:09 AM You may all like the i-chargers from junsi and can be found here to purchase in the usa. Progressive is a great guy to deal with. The 208B is probably the best deal going right now for 20 amps and 350 watts up to 8S. http://www.progressiverc.com/index.p...id=1&Itemid=18 I have a tiny bit of experience with increasing the voltage on lipo during the charge , since all my old packs are so worn out that I can set the rate at nearly anythig I want and they will hit the cv stage very early (sooner) in fact most times I leave all chargers set to max current and even on a tiny battery if the rate goes over the max at the beginning it's no big deal. Here's what I did after most said I was crazy: My theory was that it wasn't the high voltage that ruined a lipo while charging, but rather the voltage at rest above 4.25 (or whatever you like for a max) I like saying "4 and a quarter" it sounds nice. Anyways I figured that whatever the voltage was up to the full mark was going to be ok and it only climbed to 4.5 on a cheap cell. I still maintained the max current spec of the cell and charged it with CC , and eliminated the CV stage alltogether. This allowed the cell to charge as fast as a NI cell (at a constant rate) There's no apparent cell damage or heat increase , but the trouble is predicting the "full mark" which I am working on. I'll post a graph as soon as the garage pc is up and ruinning again. ps , std warning "don't try this at home" or the world may end. That's what most told me.