Another Battery Question

[Crash Test Dummy]

Hi,

I have another question on batteries,

I have a 22.2v 5200mAh 30C-50C 6S1P battery that I use on my TREX600.

Can someone tell me what the bit in bold above means, I think the 6S1P means its 6 cell ??

What current could I safely charge at ? I am currently charging at 5,2A

Could I safley charge at a higher rate without dammaging the battery ?

Thanks in advance

[Tom Burgess]

30-50C is the discharge rate.

1C for a 5200 mAh pack is 5.2A (hence why you are charging at that rate)
2S for a 5200 mAh pack is 10.4A

Therefore your pack is capable of suppliying 156A (5.2 x 30) at the 30C rating and 260A (5.2 x 50) if the 50C rating is true.

[challis349]

if you need any clarification with what tom has said above i will explain later, as you know, ive only been into helis a short time, but cars for longer

[Andy from Sandy]

Usually the 30C stands for the continuous discharge current (already calculated in an earlier posting) and the 50C stands for the burst current the pack can supply for very short periods of time without damage. How long that short period of time is I have no idea.

[Neutrino]

6S1P means the battery is made of 7 cells, with 6 wired in series, and one wired in parallel.

When connecting a battery in parallel it does not add to the voltage, it merely increases the capacity. Where as more connected in series, increases the voltage, but not the capacity.

So if you had 2 10v batterys each 1000mAh, connecting them in series you would have a 20v 1000mAh battery, connecting them in parallel you would have a 10v 2000mAh battery.

They are still treated as a 6 cell battery for charging purposes though.

Hope that helps.

[Tom Burgess]

6S1P means the battery is made of 7 cells, with 6 wired in series, and one wired in parallel.

When connecting a battery in parallel it does not add to the voltage, it merely increases the capacity. Where as more connected in series, increases the voltage, but not the capacity.

So if you had 2 10v batterys each 1000mAh, connecting them in series you would have a 20v 1000mAh battery, connecting them in parallel you would have a 10v 2000mAh battery.

They are still treated as a 6 cell battery for charging purposes though.

Hope that helps.

A 6S1P pack only has 6 cells.

A 2S2P pack has 4 cells.

[Neutrino]

A 6S1P pack only has 6 cells.

A 2S2P pack has 4 cells.

You'll notice at the bottom of my post i mention they are a 6 cell battery, i was explaining the physical principles behind a 6 series, 1 parallel battery configuration.

[Kozmyk]

6S1P means the battery is made of 7 cells, with 6 wired in series, and one wired in parallel.

OK. When are you going to 'fess up and admit that you're joking?

6S = 6cells in series, 1P = 1 pack in parallel - Total 6 cells (kind of confusing for 1 pack but makes sense for 2 or more)

So 6S2P would be 2 x (6 cells in series) wired up in parallel - Total 12 cells

Info on batteries -
Basic info - Understanding RC LiPo Batteries

More technical - Welcome to Battery University

[Neutrino]

Ill agree its confusing, its just down to wiring, a 6s1p battery is 6 cells, its just a definiiton on how it is wired.

[Kozmyk]

You were doing OK except for the number 7.
There is no 7th cell in a 6S1P.

[Neutrino]

Now im getting confused :S I always thought the same as when wiring up batterys in school, it meant x number in series with x number in parrallel to increase the capacity. Is that not the same for LiPos??

I know my first bit was ok about the affect on voltage/capacity, but it just seems sensible, that its an extra battery at the end in parallel??

[Kozmyk]

I drawed a drawing.

[GravityKills]

Hello,

there are indeed 6 cells in series.
The notation means there is one "stack" of 6 cells.
For example, a 6s2p would use one stack of 6 cells, another stack of 6 cells, and those in parallel.
The only 2p packs I've ever seen are receiver packs, and those were separately wired (you could use them as two completely separate LiPos).

There are some good reasons why wiring LiPos in parallel is a bad idea, unless you're a manufacturer.

Oh, and 6 cells in series, and then one cell in parallel, that's guaranteed fireworks. Effectively, you'd be charging a 4.2 V LiPo from straight 25.2 V. Kids don't try this at home, probably it will blow up right in your face.

edit see drawing above...

[Mark_T]

I know my first bit was ok about the affect on voltage/capacity, but it just seems sensible, that its an extra battery at the end in parallel??

Think of it like this, in general terms it is xSyP

x= total cells in each group
y= number of groups

so 6S1P is one group of 6 cells.

2S2P is two groups of 2 cells each, 4 cells in total.

The rest you have right, add more to the S to increase voltage, add more to the P to increase capacity.

[Neutrino]

Think of it like this, in general terms it is xSyP

x= total cells in each group
y= number of groups

so 6S1P is one group of 6 cells.

2S2P is two groups of 2 cells each, 4 cells in total.

The rest you have right, add more to the S to increase voltage, add more to the P to increase capacity.

So in terms of LiPo's, whats the difference between 6S1P, and 6S? They are the same, just different notation?