View Single Post
Old Mar 23, 2009, 11:26 AM
write2dgray is offline
Find More Posts by write2dgray
write2dgray's Avatar
United States, NJ, Princeton
Joined Dec 2006
2,005 Posts
Originally Posted by Mera'din
Thanks for the info! So, you can set your own numbers for the discharge, etc...What I don't like about my current charger is that the discharge cutoff is set by the cell count. 3s lipo is 9volts, etc...

I am still confused by the power supply. The charger is listed as a 250 watt charger, if I buy a 250 watt power supply I wont be able to use all 250 watt of power?
You're welcome, I'm more than happy to help.

As far as power supplies and output power: power in does not exactly equal power out. Some % inefficiency must be allowed for to account for the power conversion within the charger. In my experience the iCharger is one of the more efficient chargers on the market, with a measured efficiency in conversion of 85-93% depending on input voltage/current and output voltage/current.

For example, charging 6S at 10A would require 252W (6x4.20Vx10A=252W) output. To output 252W would require ~280W (252W/90% eff.) input assuming 90% efficiency in the conversion from say a 15V input to 25.2V (6s Lipo voltage) output.

Hopefully this helps and makes it a little more clear.

write2dgray is offline Find More Posts by write2dgray
Site Sponsor
Reply With Quote