My 5300's have just finished two complete seasons. I didn't keep track of the cycles, but I'm confident of it being at least 200 if not more. I can still easily get through the Masters pattern but have noticed that my plane is slower than it was. Over these two years, I've gone from a 22 X 14 to a 21 X 14 to a 20.5 X 14 on a Hacker C50-14XL Comp setup. Each of these changes brought on an increase in speed, but now the 20.5 X 14 feels like 22 X 14 did when the batteries were new. I'm planning on replacing the packs for the 2008 season. My goal is to adapt to flight conditions with a prop change so I'm slower in calm and faster in wind. My batteries are currently too tired for that. I've been very satisfied with the 5300's as well as ThunderPower's service. For now, I'm going to sit tight until Spring to see what comes out in batteries between now and then.
ORIGINAL: ual767
My 2 sets of TP5300's have 110 and 115 cycles on them now and don't seem to perform any differently now as far as flight performance other than they come down about 5 -10 degrees hotter than before. That is still only around 120-130 degrees on even the hottest 95+ degree days. Don't own a generator either, just a $110 deep cycle marine battery that gives me 5 full 10S charges per session. That is just plain inexpensive power. I come to the field with 3 fully charged packs and I am good for 8 flights. Much more than I will typically fly. Keep the info flowing Don and Jim, there are plenty of us out here who appreciate the data.