im not sure but trickle chargers of any sort are not good for batteries in the long run. i just purched li poly cells for my fun picollo. i found a cheap place that sells e tec and kokam packs and chargers at very reasonable prices. http://www.lightflightrc.com . they also sell ac adapters for thier dddc chargers at just above retail. they also have wonderful tech support. i would wholeheatedly recommend them.
cheers