Lipo's 2s2p vs. 2s1p

[ice329]

Question, 2s2p vs. 2s1p I know 1p means 2 cells and 2p means 4. What actually is the benifit of 2s2p or pros and cons of each?

The Poly RC 5350 packs I got are 2s1p and the new Intelect 5000's are 2s2p.

[Darin Jordan]

Joey,

Is that 2S2P with a TOTAL of 5000 mah, or 2S2P OF 5000 mah??? HUGE difference between the two.

If the Intelect are as I believe they are, then what you actually have is 2S2P of 2500mah cells, for a total of 5000mah...

Clarify this and perhaps we can better answer your question... If the total capacity of the two packs is similiar, then there would be little difference between the two. If the 2S2P setup actually totals 10,000mah, then it would be the superior setup, both for runtime and loaded voltage and the ability to pull amps out of it.

[Flying Scotsman]

Joey:
2S1P.......2 cells in parallel

2S2P......4 cells in parallel..... Advantage, double the amp draw capacity in relation to the C rating
2s1p 3500 20C= 70amps
2S2P 3500 20C= 140 amps

Douggie

[Flying Scotsman]

Sorry Darin, I am a slow typist.

[Fluid]

2S1P.......2 cells in parallel

Nope, that is 2 cells in series only. Produces 7.4 volts nominal.

2S2P......4 cells in parallel

This should read: two sets of 2 cells in series, both wired in parallel.
Or conversely, two sets of 2 cells in parallel, both wired in series. Either way, it produces 7.4 volts nominal but has twice the capacity of the 2S1P pack.
(I know Douggie knows all this...)

.

[Flying Scotsman]

Thanks, Jay for pointing out my bo bo


Read before you post

[ice329]

OK, I am not sure this is why I posted. Here is the link to the packs I just ordered, say 2s2p. Now the 5350 Poly RC packs say 2s1p right on the lable. Both are 7.4 volts I believe, at least I know the Poly packs are I have not physically seen the Intellects yet.

http://www.teamtrinity.com/shop/item.asp?item=TRI20193 here are the Intellect packs info.

[Flying Scotsman]

Joey..Joey...Joey

Read Fluid's answer they will all have a nominal 7.4V...amps another story based on the C value.
Also I would take Team Trinity values with a pinch of salt

Douggie

[Darin Jordan]

OK, I am not sure this is why I posted. Here is the link to the packs I just ordered, say 2s2p. Now the 5350 Poly RC packs say 2s1p right on the lable. Both are 7.4 volts I believe, at least I know the Poly packs are I have not physically seen the Intellects yet.

http://www.teamtrinity.com/shop/item.asp?item=TRI20193 here are the Intellect packs.

It looks like the Intellects are a pair of 2S1P, 2500mah packs, wired in parallel to give a total of 5000 mah.

Depending on the quality of the packs, they should give similiar performance numbers, but I think that the Poly RC pack would get the nod, as it's only 2-cells, vs. 4, so it would have fewer internal connections (less failure points and resistance), and it's also 350mah more... Plus Poly RC is a known quantity... it's known to be a quality cell...

Just my opinion... either would work. I just think one would work better...

[Ub Hauled]

Trinity is a bit confused hehehehe, they say 2s2p on top and then and in the "included" section say "(1) Lipo battery". The picture also shows only on pack. I'd assume this is 2s1p.

Having 2 packs in parallel (2s2p) would double your mAh and have same voltage,
having 2 packs in series (4s1p) would give you same mAh double the voltage.
The advantage on having more mAh is able to have higher discharge, longer running times but lower RPM.
The advantage of having more Voltage is being able to have higher RPM but lower discharge and shorter runtimes.

[ice329]

I thought I was getting the 2s 3w 2p s1 and tw3's down.... hehhe until I saw that on the Trin webpage. I have to think its a TYPO.... Has to be

[ReddyWatts]

Could they actually build a 2s2p pack? It would need a pin out for charging 4 cells?

[Flying Scotsman]

Joey, I take a dram from time to time, but what the heck does that mean.

Douggie

[Ub Hauled]

Could they actually build a 2s2p pack? It would need a pin out for charging 4 cells?

Yes Reddy, they could, I think Maxamps does but in the bigger packs... it's all just wrapping.
It'd be like the 2 separate packs but shrink wrapped together.

[ice329]

Reddy When I get them I will inspect and, will surely let you know... until then its a mystery... I guess they could build a 4 cell pack. Who knows...