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02.09.2008, 05:13 PM
I run a very similar combo to you and will say that the 9xl is very happy on 5s. The true rc lipos (8000mah ) will give you good runtime, I guess you would have a pair of 5s 4000 lipos wired in parallel to make 8000? or a 2s and 3s 8000 packs wired in series to make up 5s 8000mah? Same think either way. I acutrally run a pair of the hextronic 2200 mah 5s lipos from united hobbies. They are underrated at 2200 mah, and they run super cool and do not take much in the way of balancing to be even after a hard run.
The mrc 989 is an excellent charger, I have 1 and it is great, I would highly recommend it!
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