want to buy Lipos

TBH the problem with trurc cells is that you need a lot of MAH to get the current output you need which ends up with an much heavier and less agile vehicle.

personally i would rather get two 5000mah 3s 25c enerland packs at 389g each than the 8000mah 565g packs.

Thats 352grams more weight which is higher up raising your COG also 352 grams more weight that has to be lugged around reducing acceleration plus adding more strain to the brushless motor and controller and the transmission.

Enerland cells are better quality meaning they will likely have a better cycle life than truerc cells.

[jhautz]

I hear you on the weight thing, but it one of the key things he was looking for was "long runtime." Big packs give long run times.

If long run time is the goal why pay for the extra C rating you dont need. The big packs give you the power you need and the runtime.

As for life cycle of the TrueRC. I have an couple old packs that are at least a coule years old now and have hundereds of cycles on them. Still going strong.

I have enerland packs as well and love them and for racing I agree that a smaller, lighter pack is more ideal. For long bash sessions the TrueRC packs are perfect.

[lincpimp]

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!