maxxamps

[MetalMan]

squee, there's no problem with lots of cells in a Lipo pack... I have 2 separate packs each with 12 cells...

And about parallel being more expensive, it doesn't work like that. You pay for the number of cells that are in the pack. For example, a 3s2p would cost the same as a 2s3p because they both have 6 cells.

Chaos, did you happen to look at the specs on that 5s3p 6600mah pack (that uses 2200mah cells)? It's 35mm wide x 96mm long x 126mm TALL. You'd need some special way to mount that... Those 2200mah cells are best suited for airplanes because they are 35mm wide and only 96mm long. Normal car batteries (6cell NiMh) occupy ~46mm wide x 135mm long.

I did notice that and I think straps in place of the stock retainers would work, with room to spare on the sides and front, it would mainly just stick up higher. Am I not looking at the dimensions right?

[squeeforever]

Originally Posted by MetalMan

squee, there's no problem with lots of cells in a Lipo pack... I have 2 separate packs each with 12 cells...

And about parallel being more expensive, it doesn't work like that. You pay for the number of cells that are in the pack. For example, a 3s2p would cost the same as a 2s3p because they both have 6 cells.

Chaos, did you happen to look at the specs on that 5s3p 6600mah pack (that uses 2200mah cells)? It's 35mm wide x 96mm long x 126mm TALL. You'd need some special way to mount that... Those 2200mah cells are best suited for airplanes because they are 35mm wide and only 96mm long. Normal car batteries (6cell NiMh) occupy ~46mm wide x 135mm long.

What I meant when I said its usually more expensive to run packs in parallel, I ment like to get 2 5S1P packs and wire them in parallel for more mah. It's usually cheaper to just get different packs with a higher mah and put them in series. About the number of cells, its not that theres a problem with 15 cells in 1 pack, its just the weight. I just don't like the added weight as with most people.

[MetalMan]

Originally Posted by Chaos

I did notice that and I think straps in place of the stock retainers would work, with room to spare on the sides and front, it would mainly just stick up higher. Am I not looking at the dimensions right?

You'd need some very tall straps. 126mm in American/Imperial size is about 5in., and that's the height. There's no way you could effectively keep the pack together and hold it securely.

Originally Posted by squeeforever

What I meant when I said its usually more expensive to run packs in parallel, I ment like to get 2 5S1P packs and wire them in parallel for more mah. It's usually cheaper to just get different packs with a higher mah and put them in series. About the number of cells, its not that theres a problem with 15 cells in 1 pack, its just the weight. I just don't like the added weight as with most people.

It depends where you look. Many times it is actually cheaper to get a pack with cells in parallel than a pack with larger cells. Part of the reason for that is if there are more cells made, then that drives the cost down (that's how it works with everything). As for added weight, there is a little bit because the "pouches" have a larger surface area, but for those like myself, the cost difference outweighs the weight difference. The way I see it, as long as it's lighter/more powerful than NiMh, then it's all good :004:.

well it looks like I did my numbers wrong, lol, 5 inches won't fit very well at all! So much for 1 pack then, I think I will go with 2 8000mah 2s2p packs, they are rated at 96amp constant discharge, but it brings me back down to 14.8v instead of 18.5! grrrrr but they will fit and they are very light

[MetalMan]

Yes, that setup would work quite nicely. It's car friendly too :).

[neweuser]

Squee, i guess the only reason i was thinking new controller is because i was reading that the mah, when increased, seemed to put out more of a burst of amps. But from here, I think i'll go like this. one 3s2p 8000mah, one 2s2p 8000 mah taking me to 18.5 v? and use my 9920. wiring it in series. would this be ok? i think i get it now. I hope! Going 6s would be getting to close to my limitation for my controller though right? too many volts?

[MetalMan]

6s would be fine for the 9920. It would be like ~19 NiMh cells.

[neweuser]

So i could run 2 3s2p? Wouldn't i be getting close to the controller limitations?

[MetalMan]

It would be fine on the controller. It would be getting close, but won't harm it.

[neweuser]

Cool. Maybe that's the bet then. All I need is a charger that would charge the 2 3s2p 8000mah packs then. Then a balancer right, LVC? Any advice on a good charger, balancer, LVC for these packs? Also, the LVC is connected to the system right in the receiver and batt? The balancer is used when charging the batts? thanks guys!

[MetalMan]

The LVC can be soldered to the controller's input wires (or connector), and then will go inline with the controller's receiver wire and the receiver.
The balancer is used during charging.

Contact Mike about getting those items (balancer, charger, LVC).

You're welcome, neweuser!

[neweuser]

And Thanks! Connector wires, you're not talking about the batt wires that the ubec goes to, but the 3 that go to the receiver? so you'd wire it to the three on the controller wires that go into the reciever, kinda like how you do the ubec on the batt wires(same concept)?

[MetalMan]

By input wires I meant the controller's battery wires (battery input), and the connector that you're using on the battery wires, like the UBEC.

[neweuser]

Would you have a pic? I think i know what you mean, but not sure. From my understanding....wire into batt wires on controller(like ubec), that part i got. But if you have to plug it into the receiver...where? Wait for a min, if it's a low voltage cut off, would it not have to go to the batt?