Maxwell Ultra-Cap's/Lithium cells hybrid pack - RC-Monster Forums

zeropointbug · 12.03.2006, 02:24 AM

Yeah, i sooo want to try this. About the setup, ya if you have more than one pack, the deans connector would disappear if using A123 cells, and would be very dangerous using LiPo's. But, i only have one pack, that can be charged in 25 minutes ;) (the BK power supply is $330) So, for me i would have the pack and caps permanently hooked together, well not really, just a deans but they would never be disconnected.

So, would you know the duration of the 100+ amp bursts in a brushless setup like Quark and an XL motor? Just so i can do more calcs.

This would be a kick in the face for the motor! :)

zeropointbug · 12.03.2006, 02:28 AM

Also, the self discharge of the 120 farad cap is .15mA which is VERY low, no worries about it discharging the battery pack anytime soon...

BrianG · 12.03.2006, 02:46 AM

Yeah, if you are set up for that kind of thing and understand the possible risks if not done right, it should work great. Doesn't seem to be something that will be available for the masses anytime soon though.

The bursts doen't last very long; basically however long it takes for the motor to reach the rpm of the signal it's being fed, which is mostly on take-off out of the hole, and any hard acceleration. I'm sure there are a couple graphs of an EagleTree plot around here somewhere.

150uA delf discharge; not bad. According to my calculations, it would take about 3.5 years to totally drain a 4.6Ah pack not including the self-discharge of the battery itself.