MaxAmps Race Edition Lipos

[RC-Monster Mike]

I haven't run the packs yet, but I will be sure to comment when I can do so intelligently. I have only been back from I-Hobby for a week and the packs have only been here for a couple days - still need to unpack the stuff and dig up my Eagletree for data gathering - but parts come first.
I don't have the equipment to test 75c continuous(nobody I know does, either), much less 150c - I plan on mapping voltage under load against a 6500mah Hyperion pack (35c cont./65c burst rated) to guage the overall ability of the pack. The fact is that even at 75c continuous, the pack would only last for 48 seconds before being completely discharged(assuming it could deliver 6500mah at this load, which is doubtful). The wires, connectors, etc. couldn't handle this load without melting, either. I am completely confident that the packs can't deliver 75c continuous, as the wire and connectors are a necessary part of any pack. I don't intend to even attempt to verify this absurdity. I do, however, hope to get an idea of the overall capability of the packs. If they can hang with the Hyperion packs (voltage at a given load), then they(the packs)will have earned my respect. Regardless of label claims, I am interested in any quality battery pack.

[_paralyzed_]

Well put Mike. I'm continually impressed with your intelligence and level headedness.

Go Monster!! Raaaaawr!!

[hemiblas]

Originally Posted by RC-Monster Mike

I haven't run the packs yet, but I will be sure to comment when I can do so intelligently. I have only been back from I-Hobby for a week and the packs have only been here for a couple days - still need to unpack the stuff and dig up my Eagletree for data gathering - but parts come first.
I don't have the equipment to test 75c continuous(nobody I know does, either), much less 150c - I plan on mapping voltage under load against a 6500mah Hyperion pack (35c cont./65c burst rated) to guage the overall ability of the pack. The fact is that even at 75c continuous, the pack would only last for 48 seconds before being completely discharged(assuming it could deliver 6500mah at this load, which is doubtful). The wires, connectors, etc. couldn't handle this load without melting, either. I am completely confident that the packs can't deliver 75c continuous, as the wire and connectors are a necessary part of any pack. I don't intend to even attempt to verify this absurdity. I do, however, hope to get an idea of the overall capability of the packs. If they can hang with the Hyperion packs (voltage at a given load), then they(the packs)will have earned my respect. Regardless of label claims, I am interested in any quality battery pack.

Great point. C rating is almost meaningless with these higher ratings being swung around. Really what we are after is voltage at a given load. The higher the voltage the more power our setups will produce, the happier we will be. Look forward to your results when you are able.

[lincpimp]

Originally Posted by hemiblas

Great point. C rating is almost meaningless with these higher ratings being swung around. Really what we are after is voltage at a given load. The higher the voltage the more power our setups will produce, the happier we will be. Look forward to your results when you are able.

C rating matters... Higher c rating should indicated lower internal resistance. If that low resistance is there and remains the pack will have a long life and produce good power. The internal resisatnace tends to go up as a battery ages (goes thru cycles) and the higher the resistance the lewss power the batt will produce. So going with the highest c rated pack (as long as it is true) will have the lowest internal resistance and hopefully last that way. Plus if you paln to run a certain output (watts) a higher c rated battery will have more headroom than a lower on will, and should perform better and not be pushed as hard, and last longer.

So C rating matters. I would rather run a 1000c battery than a 10c if all other factors (weight, size, etc) were the same.

[hemiblas]

[QUOTE=lincpimp;386856]C rating matters... Higher c rating should indicated lower internal resistance. If that low resistance is there and remains the pack will have a long life and produce good power. The internal resisatnace tends to go up as a battery ages (goes thru cycles) and the higher the resistance the lewss power the batt will produce. So going with the highest c rated pack (as long as it is true) will have the lowest internal resistance and hopefully last that way. Plus if you paln to run a certain output (watts) a higher c rated battery will have more headroom than a lower on will, and should perform better and not be pushed as hard, and last longer.

So C rating matters. I would rather run a 1000c battery than a 10c if all other factors (weight, size, etc) were the same.[/QUOTE

In an ideal world where there is a standard for C rating it would matter, but right now anyone can claim anything. C rating between manufacturers is almost meaningless. You cant compare a 40C ebay brand lipo with a 10C truerc lipo. The 10C truerc battery will blow it away. I think we are both on the same page when you say, "as long as it is true". I think manufacturers have a different idea of what "continuous" means, even though it seems pretty clear to me what continuous means.

[sikeston34m]

[QUOTE=hemiblas;386910]

Originally Posted by lincpimp

C rating matters... Higher c rating should indicated lower internal resistance. If that low resistance is there and remains the pack will have a long life and produce good power. The internal resisatnace tends to go up as a battery ages (goes thru cycles) and the higher the resistance the lewss power the batt will produce. So going with the highest c rated pack (as long as it is true) will have the lowest internal resistance and hopefully last that way. Plus if you paln to run a certain output (watts) a higher c rated battery will have more headroom than a lower on will, and should perform better and not be pushed as hard, and last longer.

So C rating matters. I would rather run a 1000c battery than a 10c if all other factors (weight, size, etc) were the same.[/QUOTE

In an ideal world where there is a standard for C rating it would matter, but right now anyone can claim anything. C rating between manufacturers is almost meaningless. You cant compare a 40C ebay brand lipo with a 10C truerc lipo. The 10C truerc battery will blow it away. I think we are both on the same page when you say, "as long as it is true". I think manufacturers have a different idea of what "continuous" means, even though it seems pretty clear to me what continuous means.

Just remember, the people printing the labels in this case, are NOT the manufacturer.

I have yet to see a manufacturer dare to tippy toe beyond the 40C-45C mark.

A Manufacturer won't last long making claims they don't stand behind.

[lincpimp]

Originally Posted by hemiblas

In an ideal world where there is a standard for C rating it would matter, but right now anyone can claim anything. C rating between manufacturers is almost meaningless. You cant compare a 40C ebay brand lipo with a 10C truerc lipo. The 10C truerc battery will blow it away. I think we are both on the same page when you say, "as long as it is true". I think manufacturers have a different idea of what "continuous" means, even though it seems pretty clear to me what continuous means.

C rating still matters. The fact that mfgs use inflated specs is another issue.

Originally Posted by sikeston34m

Just remember, the people printing the labels in this case, are NOT the manufacturer.

I have yet to see a manufacturer dare to tippy toe beyond the 40C-45C mark.

A Manufacturer won't last long making claims they don't stand behind.

Marketing sells stuff, who would have thunk it...!!!

And a 40c lipo is pretty much all we need at the moment. The ridiculous claims are pretty funny, I guess just because I know something about lipo tech.

[crazyjr]

I am going to ask the obviously stupid question. Why are you guys bugging over something that has proven to be a moot point? You can't sway Newbs from buying bad batteries, at least no one listens at first. And, Now that hobbyking has a USA warehouse (In maxamps back yard no less) there is going to be less business for the established battery producers all around anyways.

Mr Wilcox, This is nothing towards you, just wondering why these guy always bug about a battery most of us might not buy. Good luck selling these batteries to this group of rc'ers