E Revo Lipo Options Best Bang for the Buck

[BL_RV0]

5s 8000mah setup for $35....
http://cgi.ebay.com/2x-18-5v-4000mAh...QQcmdZViewItem

[Smashwings]

Originally Posted by BL_RV0

5s 8000mah setup for $35....
http://cgi.ebay.com/2x-18-5v-4000mAh...QQcmdZViewItem

This is a super low price! and they have 2 x 4s 4000mAh packs in stock that are lighther and cheaper!
Someone knows if they are actually rated for that mAh or someone has bought ones?

[sikeston34m]

Originally Posted by Smashwings

This is a super low price! and they have 2 x 4s 4000mAh packs in stock that are lighther and cheaper!
Someone knows if they are actually rated for that mAh or someone has bought ones?

I've been looking at those myself. They are 10C cells continous, 15C Burst.

8000mah = 80 amps continous, 120 amps Burst.

Not Bad at all for the price........But.....

I think alot of the upper end Motors geared aggressively would puff those.

With conservative gearing and some punch control enabled to help tame those amperage spikes, they could be a good setup.

I like the 5S 8000mah setup that actually fits the battery compartments.

It's easier to gear conservatively and control amperage with 5S than is 4S IMO.

I have ran 10C cells before. They don't deliver the amps that higher C ratings do, but with 8000mah, 80 amps isn't bad.

This reminds me of the good reviews the True RC 8000mah 4S setups were getting.

I really should invest in a data logger and do some testing.

[mistercrash]

Originally Posted by BL_RV0

5s 8000mah setup for $35....
http://cgi.ebay.com/2x-18-5v-4000mAh...QQcmdZViewItem

I ordered a pair of those to find out if they are worth it. The shipping was fast as it only took a week to get them from Hong Kong. Here's a little info about them for starters. First a pic of the pair.



Weight = 418.5 grams each, the dimensions stated on ebay were 145X48X30, they are more like 146X48X30.7. It's going to be a tight squeeze putting them in the ERevo. The positive and negative leads are rather short IMHO, only 7.4 cm or a little less than 3 inches. They are obviously made entirely by hand and wrapped in a sticky foam, like servo tape, with a layer of fiber reinforced transparent tape all around. There's a piece of sticky black cardboard at each end and two pieces of transparent fiber reinforced tape at either end on top of the cardboard to finish it off. The sides of the cells are exposed, there's nothing covering their aluminum envelope. Don't like that at all.



It was my intention to offer these lipos some better protection by shrink wrapping them. So I gently peeled the label and put it aside, then I peeled the pieces of fiber reinforced tape at either end. A thin layer of the protective sticky cardboard underneath will come with it but I'm not worried about that. Plenty of cardboard left.



Here's why I'm not worried, I replaced that tape I peeled off by a piece of Gorilla Tape. If you don't know about this stuff, it's just the stickiest, toughest duct tape you can find just about anywhere.



Then I take a piece of 3 and 5/16 inch wide black shrink wrap I got at the LHS that is 1/2 inch longer than the lipo. I slide and center the lipo in it and using a heat gun, I shrink it. This stuff can be nasty and if you apply just a little too much heat in one spot, it will rip and form a big gapping hole. Keep the gun moving all the time. I replaced the label where it should be and this is the result.



I think it looks a bit more factory made and the batt is much more protected.



Now does anyone know how I can test these lipos without actually running them in the truck? I pre ordered the BL ERevo but it looks like the release date has been set back to mid February.