fnp

I really cannot decide between the TP1900 10C or the IRATE1800 10C. I think the IRATEs weigh around 3.9oz. I dont know how much the TPs weigh.

Also, if I purchase two 3s packs and use them indivdually on some planes can I put them in parrallel when I want to fly my bigger planes. Is that safe and in that senario wld I charge them (each 3s pack) individually or together in parallel.

Thanks fnp

BCB

The TP 1900's weighs 4oz.

rm

My Feedback: (27)

I'll take a shot here, but I'm no expert.

Irates continuos rating is 8c and tp's are approx 9c.
Continuous amps from irates would be 14amps
continuous amps from tp's 17amps

10c ratings as I understand them will result in shorter run times, not the full mah ratings.

Yes you could put them in parallel, you would then have a 3s2p pack. same voltage but 3600mah, 3800mah respectively.
Your amp rating would go up to 3.6 x 8 = 29amps for irate, 3.8 x 9 = 34amps for tp's.

Guys charge packs in parallel. You'd need a charger that could put out 3.8amps to charge at 1C for the tp's. Since you have the same cell count, size in each pack you could charge in parallel if your charger supports that high of an amp rating. If not you could charge at less then the 1c rating, it would take longer.

The irate cell size is physically bigger than the tp's, I think the tp's are a little thicker. Weight is fairly small difference.

I'd go with the thunder powers myself. If they weren't available, I'd get irates.

Biggest factor is if the size of the irates would fit your plane.

buzzsaw46

The new 10C TP 1900's will blow away the 1800 Irates from what I have heard. Higher voltage underload cooler packs at high C disscharges!

enrique1123

The TP 1900 are the way to go, I have 2 packs of their new 10 C's and i fly them individual for my GWS P51 and a Mega 16/15/6 or I fly them in parallel for my AXI 2814/12 in my Pigi 3D. They weigh 4 oz. I only have 11 flights on one and 14 on the other since I just got them a couple of weeks ago. I keep tabs on how many flights just to see how many flights I get from each pack. I got one of the early 2100 3 cell packe with over 220 flights most of them at 16 amps so I expect this new pack to really hold up.

fnp

Thanks all. I think i have been convincrd that the tps are the way to go.

I have a question though for Albert. After using your packs individually and then when you decide to use them in parallel -
1. Do you charge them in parallel.
2. to cahrge them in parallel do you have to get both the packs to the same voltage and if you dont is it dangerous while charging.

I have read else where in these forums that you need to have all cekks at the same voltage before charging.

Thanks fnp

Matt Kirsch

My Feedback: (21)

That's right. All voltages need to be equal before you start charging multiple packs in parallel. The easiest way to achieve this is to charge each pack separately, then connect them together. What little difference in voltage between the packs will quickly balance out at that point.

It's also a good idea to periodically check the health of individual cells in a pack. When one cell is out of balance with the rest, it can ruin the whole pack during a charge.

enrique1123

That is correct, if I use them separately I charge them separate and then when I use them in parallel I will first make sure that they are the same voltage and then I will use them.

Bret1

How do these compare to the Thunder Power?
http://aircraft-world.com/shopdispla...ithium+polymer

I'm not sure about any extra weight involved, but it looks like they certainly have safety in mind and very competitive prices and 10c. What's the verdict?

Jason W M

My Feedback: (6)

PolyQuest packs use the same cells as IRate/Tanic. Its confusing to see so many different vendors carrying the SAME product under different labels. PolyQuest do have a charge protection circuit though.

In performance, the TP1900s will outperfom 1800s from Poly/IRate/Tanic. And in less than 2 months, many TP packs will also be available with charge safe circuitry - from 730 mAh up to 8000 mAh!