TP Batteries

[DPeterson]

Just got an e-mail from TP. They opened a US store for Lipos. They call them Roaringtopusa.

Anyone know more info about the cells. I need a few to replace some of my 2010 cells.

Kind of got a bad taste in my mouth now with my last batch of Hyperion 45C all puffing.

Doug

[dmitry100]

Revoelectrix

[kfxguy]

I was going to recommend Spc batteries but they are always out of stock on most everything. They do have a bunch of 4s 5000 50c in stock for like $52 each. These are very good batteries.

[dmitry100]

kfxguy: You no longer like the Revo's?

[kfxguy]

kfxguy: You no longer like the Revo's?

Yes but revos are hv and as far as I know they have to run non hv batteries in sanctioned racing. Spc is my pick if you have to run a regular lipo.

[DPeterson]

What are Spc batteries?

Not really interested in HV batteries. Not interested in changing the performance of my boats. Walked away from most sanctioned racing so thats not an issue.

Kind of liked how TP has been trying to support the hobby. Thought I would give their bats a try. Didn't want to try them blindly though.

Doug

[78MaicoRider]

I don't think all revos are HV. And the HV revos don't require charging to HV levels. They can be used as "normal" Lipos. I may be wrong but believe this is the case.

[Brewbud]

The HV batteries still have a nominal voltage of 3.7V so that is OK. Discussions here have said they are OK as long as they are not charged to HV levels. But I am a newb so..... Someone will jump in here I am sure.

[Jamey]

Not that it matters to the OP but what I remember reading in the rule book is that the pre-race voltage per cell has to be 4.23v or less, cell count restriction per class obviously. I don't recall anything about nominal voltage restrictions but I could have over looked it or misinterpreted somewhere.

SPC is an online battery retailer. SPCracingbatteries dot com

I have one of their batteries and it works well. Also another one to consider is SMC. Both SMC and SPC sell about the same line of batteries, SMC has a slightly more modest a C rating usually. The models I have are so similar I would be willing to guess they come from the same factories with different labels.

[T.S.Davis]

I know Doug doesn't care but here's the skinny on the voltages.

NAMBA still has the 3.7 nom in the book. IMPBA does not.

IMPBA already had a pre-race voltage range. NAMBA has followed suite with pre-race voltages. 4.23v/cell max charge. 4.2 is what is sane on an LV cell. 4.23v gives you a little cushion if you goofed.

What's been happening at some NAMBA gigs is the pre-race voltage has been getting checked. If it's under 4.23v/cell nobody cares about the "nominal". I suspect that eventually the "nominal" aspect of the FE rules will go away.

Some of the HV cells charge to 4.35v. I've not collected enough data myself to have an opinion on the effects of the additional voltage. I do know that the difference on my Icharger between 4.23v and 4.35v on a pair of 6s packs is 4 minutes but that's charging them at 15 amps.

Eventually when HV cells become more prevalent than the LV cells, both organizations will have to make an adjustment to the new ranges. Timing is iffy on that to my knowledge.

[Jamey]

Thanks for that, I thought I may have missed it. I think nominal voltage is really just a chemistry spec isn't it? LiPo technology is 3.7, LiFe is 3.3, etc. Not sure how you would even go about measuring nominal voltage.

[Jeff]

Good thing these cells don't have black shrink wrap on them. Black is the debil Bobbby Boche.

[T.S.Davis]

For what its worth, Tom ran these on our pond Wed night. Seemed fine but they should with only the one run. I believe Tom is racing them this weekend.

[MarkF]

These packs are made by Fullymax who also is the maker of Thunder power. This is great if your a fan of thunder power. Testing in the battery section of rcgroups has shown them to have less voltage under load than Dinogy or Revo.


Mark

[Brushless55]

Just got an e-mail from TP. They opened a US store for Lipos. They call them Roaringtopusa.

Anyone know more info about the cells. I need a few to replace some of my 2010 cells.

Kind of got a bad taste in my mouth now with my last batch of Hyperion 45C all puffing.

Doug

I was contacted by them to do some testing with some 4s packs and they did ok
about the same performance as the Turnigy 40C packs
The Revo 427 packs are great !
and believe it or not the Heavy Duty 60C Turnigy packs are doing awesome for many of us in D20 and also with the EDF crowd.
I've tested them against the Revo packs and one had more umph in the turns while the other had a little more top speed in the straights in my LSH

I've also been contacted by Danny with SMC as he is having some packs built for me to test that we could use in FE racing in 2016
I should have these packs before the end of this year
a few of us are running his current SMC packs and finding them to be getting better after every heat of racing during race day
This battery rocks ( IMO )

http://www.smc-racing.net/index.php?route=product/product&path=67_96&product_id=256