E Revo Lipo Options Best Bang for the Buck
 

Hi Guys,

I've been running some 5000mah 20C Lipos for about a year now. They still perform well, but like we do with everything, I'm looking for more and better.

The E Revo Compartment is limited on space, but just how much punch can we put in there?

http://i160.photobucket.com/albums/t...atterysize.jpg

I'm looking for Lipo options that are the highest capacity, highest "C" rating, at the best "Cake and eat it too" price.

Please post your suggestions we can all compare. 5S and 6S options are VERY welcome too.

Here's one that I've been looking at:
http://www.hobbycity.com/hobbycity/s...0C_Lipoly_Pack

A Pair of these in Parallel will yield:

7000mah at 4S
210 amps continous
280 amps Burst :yes:

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

Wasn't Mike supposed to have some RCM branded lipo's available?

EDIT:

I didn't see they were 4s in parallel, so you are right

zippy 4s 3500mAh 30/40C (14.8v)

Wired in series would be 29.6V/3500mAh 105/140
Wired in parallel would be 14.8V/7000mAh , so 7000 x 30/40 = 210/280A

That's right? so a nice option here, for high discharge rate

Too bad Mike's 2500 cells don't come in 3s2p packs...

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. :yes:

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

I've been looking at those! :yes:

I seen your testing and posted to your thread with some ideas. Check it out.

Can Mike get the 3S and 4S packs in the 2500 cells?

If a 5S 2500mah pack would fit on each side of the E Revo, that would be VERY nice! :yes:

What is the size of a single 2500 cell? Should be easy to figure.

If he is getting them where I think he gets them from,.....
...then they make a 4s 4500mah 25c battery with the dimensions 166X45X30.

He could probably order them.... but I'm not sure if I have the right place....

I dont want to give out too much info, because I dont want to undercut Mike...

Hey Hoov,

I believe we all support Mike here. I appreciate the fact that he has given me, and all of us RC addicts a place to talk about our setups, compare and support each other. That's what this thread is about.

This Thread is about experience with different Lipo setups and simply what fits this thing. LOL

I wish these Battery Compartments were open and could fit 10000mah 12S setups, but they're not.

@Brian. I believe these are the cells you've been working on testing and referred to.

http://www.rc-monster.com/proddetail...p4843128sp255s

If they hold that kind of voltage under a load. Two of these in Parallel would make a GREAT 5S 5000mah setup.

125 amps continous
250 amps Burst.

5S that holds voltage better under a load would outrun a 6S setup made of cheaper cells that allow voltage to drop under a load.

In looking through the RC Monster store, Those Hyperion cells caught my eye too. I don't see the pack dimensions though. Anyone have any experience with those?

Hyperion has a reputation for producing GREAT quality. :yes:

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.

http://i177.photobucket.com/albums/w...bay_lipos1.jpg

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.

http://i177.photobucket.com/albums/w...bay_lipos2.jpg

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.

http://i177.photobucket.com/albums/w...bay_lipos3.jpg

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.

http://i177.photobucket.com/albums/w...bay_lipos4.jpg

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.

http://i177.photobucket.com/albums/w...bay_lipos5.jpg

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

http://i177.photobucket.com/albums/w...bay_lipos6.jpg

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.

Neuenergy 4900xp cells! A 3s just fits in the tray and packs tons of power!

How much are they? These ebay lipos were like $45 CDN total for the pair, plus a couple bucks for the Dean's plugs and the shrink wrap. That's why I want to try them out in parallel to see if they're worth it.

I paid $95 for 3s and 65 for 2s. Although more expensive I'm sure they will provide more punch, stay cooler, and have a longer life span. They are 25/50C rated. I don't think these are in stock anymore because they have a new line of Lipos that accep up to a 5c charge rate. They cost a little more but trust me you won't be disappointed with these Lipos

Thanks for the info, I will surely keep those in mind if these ebay cheapos puff. I usualy get the best stuff I can afford but every once in a while, I get caught buying something because it is so cheap :mdr: If they puff, it won't be a big loss. If they hold up than I'll be laughing. Thanks again.

Nice work on the Lipos Mistercrash.

Please let us know how they work out for you. I've been looking at those myself. :yes:

Thanks and will do but I still have to wait for that BL ERevo to be released to try them out. Unless I hook them up to 40 automotive 1157 tail lights and see how it goes :lol: It would sure be bright in the garage.

I saw those lipos. If they perform, I might just have to get my hands on a pair.

Can you tell me what style balance taps those are, please?

Hey Sike...

I have been pondering the erevo lipo issue myself.

My current motor esc combo is a 1515 1.5d with a MMM. I run 4s lipo. Currently using trakpower packs, they are 2s 4900 25c packs, and I run 2 in series.

Now I do have some flightpower 3700 4s 25c lipos. They just fit the compartment if you take the leaf spring out. So I now have (with those 4s packs in parrellel) 7400 mah, 185 amps cont. But it is a bit heavy...

The trakpower packs were getting a bit warm, I think the 1.5d and my gearing, 19/50 mod 1, were pulling more than those batts could provide.

I think a pair of enerland 6000 2s 25c lipos would be the hot ticket for a low weight 4s setup.

For 6s I would run a pair of enerland 4500 3s 30c packs. I have not tried to fit them yet, but can try tomorrow. My other erevo will run a hacker c50 11xl, and I plan to run 6s with that motor.

Not sure what to do for 5s... Maybe a 2s and 3s packs split between the compartments. Probably best to stick with 6s...

The mistercrash lipo has align balnce taps on it. Most chinese lipos use align taps.

You really want to get a wattmeter when you get that setup going. I didnt buy those, but I did try 3 different brands of lipos from ebay and posted my results on a different website. They were the 10C 4000mah cells and they were very dissapointing. I puffed one out right away on a 5S setup with the stock titans and I wasnt even able to get up to full speed more than a couple of times. I was told by a lot of the vendors that I bought them from that they were for airplanes and not RC trucks that have the high current spikes.
The other 4000mah 10C packs I ordered were 3s and as soon as they got over 20Amps continiuos the voltage would drop under 10 volts. They would not even work on a vxl bandit without tripping lvc in the first 10 seconds. I recorded lots of voltages in the 8-10v range over 20A and never got to 40A which would have been 10C.

You should gear this thing way down when you get it or you could just puff them both. The dimensions are very small on those lipos for their capacity to really put out any meaningful current.

I am now the pround owner of many doorstoppers as a result of my trying to save money. I hope it works out better for you than it did for me.

I have 4 of them and had a set of the poly-rc 6000 25c. They are ok but not great. They will take a good beating but dont hold voltage very well under normal loads. The true rc 8k 10c have more punch and a higher top speed than ANY of my 6ks. Only difference is the 6ks dont get as hot. I am getting more punch and 1.8mph more top speed with the 8k 10c than my 6k 25c.

They are all charged with a fma cellpro 10s at 1c and the lvc is set to 12.6volts for 4s. They have never been abused.

I heard back from rk2 trading co. This means the place that sells the lipos probably has at least decent customer service.

I want to know how these turn out from the people that got them...

Hmm, interesting info. I guess they are a bit overrated. I have 4 trakpower packs, which have the 4900 25c cells in them, and they easily outperform the maxmaps 5000, 6000, and 8000 packs. Not saving much, but the enerland 3700 25c 5s pack I have would outperform a maxamps 5000 5s pack. I have a pair of 6000 2s packs coming from a guy on another forum, so when they get here I will have to try them out. My revo with the 1515 1.5 with MMM can pull a fair amount of juice, a pair of trakpower packs in series for 4s can barely keep up, and come out of the compartments rather warm... Maybe the 6000 packs will do better. I also have a pair of 3700 4s flightpower packs that I can use in parallel for 7200 4s, but they are a bit heavy for the revo. I will test them all and see what is best...

I have heard many good things about true rc cells, and have a selection of mismatched used cells that I have built into packs over the years. They are generally used in my crawlers, but always work well. Seem like a great deal for the price! They better maxamps performance for 1/2 the cost or less...

Now my poly-rc 3700 out performed my maxamps 6000s. I also had great power out of the poly-rc 4350. Its just the 6000s poly-rc and enerlands that I am having crapo power out of. I am not happy about it at all. I payed the 130 each for them b/c I thought they were the best, But seem to be one of the worst.

I also have a flight power 5s 3200 30c that performs great! Its even been in a plane crash and still keeps getting it.

I am debating on getting the spc 5200 24c or there 8000 12c???????????? I just cant make up my mind. I just want something that gives GREAT power and will last a while.


My poly-rc 6000s swelled and died at 45 runs, My enerland 6000s are now nearing that time and seem to be losing more power. This is unexceptable for a $130 battery.

Edit: my cuttoff is set toi 12.6 volts and my start power is at low and geared for about 38mph. I just dont kno what else to do to be easer on the batteries.

I log all my charges and charge them at 1c with a fma cellpro 10s

here's an update on the cheapos (cheap ebay lipos) One of them puffed while charging on my cellpro 10s charger. :lol: Maybe I shouldn't have charged them at 3c but hey, the 10s is supposed to be able to do that safely so I tried it. It's not puffed by much but it is puffed. I haven't opened the shrink wrap but it looks like there's more than one cell that have puffed. The other one will go to power a hand held vac. Live and learn. So now I'll start shopping for 4s lipos to replace them, I won't go cheap this time :lol:

It's a bit hard to see from this pic. The left one if puffed.

http://i177.photobucket.com/albums/w...h_faa661b3.jpg

Sikestorm, I'd like to ask how you got the numbers for the battery compartment measurements? I thinking of upgrading my e-revo to bl and will definetly need lipos so I wanted to see the max size that I could fit in there, and the height of the compartment isnt 30mm its actually 26.98 w\o the spring, the other measurements are still pretty close.

Have a look here, there is a pic about 1/3 the way down.

http://monster.traxxas.com/showthread.php?t=430233

Ok, I guess he just copied Suicideneils pic, but I was just making a clarification since, like I said the previous post that the compartment is basicly 27mm instead of 30, unless the compartments have a little give to allow upto 30mm packs, otherwise I'd be kinda a pain if someone wanted to go lipo on a erevo and bought some packs that where bigger then the compartment, and didn't quiet feel like having to mod the compartments or go with a aftermarket chassis to fit the bigger packs in.

hello boys. I googled lipos for e-revos and well this thread popped up. and since the last post was like 8 months ago I am wondering what batteries you guys are recommending these days for my bashing e-revo. Im going to be running BL. Mamba Monster. thanks in advance bros :)

Hyperion, FP, TP, Neu for the top brands. ZIppy, urnigy, and flightmaxx for the bargain brands.

Out of all the stuff I read, graphs I've seen, personal experience, two names pop up for me.

- Lipos with excellent quality control over the manufacturing process and more expensive to buy- Hyperion

- Lipos with good quality control but some duds find their way through the process because they sell soooo many of them and they are a bargain- Turnigy