"Powerizer Batteries", with capacitors? - RC-Monster Forums

JThiessen · **"Powerizer Batteries", with capacitors? -** 12.04.2005, 01:58 AM

Anybody ever use these?
Powerizer

I've never seen a battery in an RC with a capacitor on it! The batt's from them are generally low price - gotta wonder about quality. But then, one never knows until you try em.

12.04.2005, 03:17 AM

They have 30 amp discharge, and for $40 for 14 cells, I'd say that's a heck of a deal!

tyrewq · 12.04.2005, 03:21 AM

i know that capacitors store charge but how do they actually perform in that setup? has anyone tried these yet? or know how much charge was stored in the capacitors?

Serum · 12.04.2005, 04:40 AM

They can take some peaks from the currentdraw, but it depends on the quality of the caps how much current they can handle.

And the 2nd thing is that those caps are only able to absorb the smallest peaks, because they wil be empty pretty soon..

The reason for using caps on an esc serves a whole different purpose. (to protect the batteries from being puls loaded)

MetalMan · 12.04.2005, 12:07 PM

Those batteries are cheap. It would be best to save up your money and get better cells (GP3300 minimum).

12.04.2005, 03:23 PM

Remember, you get what you pay for. Buy cheap, you get cheap quality ;)

coolhandcountry · 12.04.2005, 03:43 PM

The gp 3300s are a much better battery. I have bought and tried these batteries out. I have even broke them up and put them in bigger packs. They will run a truck but it is not the best battery on the market. If you don't have no batts and need some they ok. I would rather run the gp or ibc batts. IMO

nbcaznmaster · 12.04.2005, 05:00 PM

Quote:

Originally posted by CrazyPhantom
Remember, you get what you pay for. Buy cheap, you get cheap quality ;)

some1 here helped me learn that!

Dagger Thrasher · 08:35 AM

I wouldn't bother with those...and the caps won't make any difference in performance...they aren't big enough. For power caps to make any real difference, you really need at least 10,000uF capacity on them (they look to be around 1,500uF). The idea is that they store up charge and release it when the ESC needs it most, keeping voltage up a little better and ironing out ripples. It certainly helps in high-current situations, but with such small caps you won't notice a difference. I have two 15,000uF power caps in parallel on Cold Fusion (effectively 30,000uF, and she is running twin 14T brushed motors)...it definitely aids acceleration a little and prevents glitching. Also, the cells stay a little cooler...not much, but every little helps.

As for the batteries themselves, well like you all say, you get what you pay for...

nbcaznmaster · 12.05.2005, 03:55 PM

could u use caps on lipos?

MetalMan · 12.05.2005, 07:03 PM

You can use capacitors on any electrical source. Their effectiveness is determined by the "capacity" (Farad) of the capacitor.

tyrewq · 07:59 PM

what's the optimum capacitor rating to snap into a 14 cell(1.2v each)? what's the uF and voltage? if you're using it on a monster truck with 99 amp draw

MetalMan · 12.05.2005, 08:16 PM

You would need a rather large capacitor for there to be a noticeable effect. You would need something with a 35v rating (to be on the safe side), and at least ~6000uf. But that would be a HUGE capacitor!

nbcaznmaster · 12.05.2005, 08:22 PM

lol, not worth it huh?

tyrewq · 12.05.2005, 08:23 PM

Quote:

Originally posted by MetalMan
You would need a rather large capacitor for there to be a noticeable effect. You would need something with a 35v rating (to be on the safe side), and at least ~6000uf. But that would be a HUGE capacitor!

it's weird. i see so many capacitors on ebay with small uf but big voltage
example:
http://cgi.ebay.com/5-CAPACITORS-470...QQcmdZViewItem