RC-Monster Forums - View Single Post - New warning insert in MMM box: "DO THE MATH!"

SpEEdyBL · 08.04.2009, 02:06 AM

It's not current that's the problem but the voltage spikes that kill the esc. Even though a 48 amp battery can supply the needed current, it's voltage spikes will be a lot more violent, compared to those from an 80 amp rated battery. C rating mostly decided on being able to hold a voltage, which makes higher amp capable packs better. You'd be amazed at how high voltage spikes can get during braking, easily twice the pack nominal voltage with bad packs. Since the the MMM and MM both have 30 volt fets this was not an issue with the MM as 3s was the rated limit.

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SpEEdyBL "Out of spec" enthusiast Offline Posts: 820 Join Date: May 2005	08.04.2009, 02:06 AM It's not current that's the problem but the voltage spikes that kill the esc. Even though a 48 amp battery can supply the needed current, it's voltage spikes will be a lot more violent, compared to those from an 80 amp rated battery. C rating mostly decided on being able to hold a voltage, which makes higher amp capable packs better. You'd be amazed at how high voltage spikes can get during braking, easily twice the pack nominal voltage with bad packs. Since the the MMM and MM both have 30 volt fets this was not an issue with the MM as 3s was the rated limit. Check out my custom converted 8ight: Sub 7lb, lowest CG of any 1/8 buggy http://www.rc-monster.com/forum/show...894#post367894 Area 52 Ranch Raceway T.R.C.R.