RAD Dog Racing

iTrader: (2)

I have just purchased a Much More Cell Master and I need to know how to set it up for IB3800 batteries.

Brian McGreevy

iTrader: (10)

I've found excellent results with a 6 amp linear charge and 20 mV cutoff. If it's cold in the area you're at, use 22-23 mV, and around 17-18 for when it's hot.

g_bruin

Check out Nexus Racing

They have posted stepped charging profiles for various batteries and conditions.

BringItOn

how hot do your packs come off? i thought it was recommended 5mv

Nexus Racing

if you want to try linear charging, what Brian McGreevy posted is pretty good to start with. For mod racing, you may set delta peak at 03. if it's cold, you may try batt. warming tray. One of MuchMore drivers used it at the birds with really good result.

Brian McGreevy

iTrader: (10)

My packs come off between 125-130 degrees.

DaveW

iTrader: (1)

I have been experimenting with upping the amp rate instead of the cutoff rate. (cooler weather) Using the CTX mode i charge 8.5 amps for the first and third stage... .02 for the second. The cutoff is 10. The IB3800's always hit the cutoff peak, and never hit temp peak, they never go above 35-38C. Since i have been running stock and 19T, the runtime loss doesnt matter. The packs just plain rip though, average volts at a 10 amp cycle are over 7.6VDC. They were mid 7.2VDC when new. I store my cells with 700MAH weekly, using the capacity cutoff/linear charge on the CTX charger. Before use i discharge at 10 amps, and then put them on the ZERO-V tray to warm the cells, and then they are ready for charging. If i want a bit more rip for the first few laps, i add a 10W.2 OHM resistor across the tabs of the battery for 30 minutes AFTER i bring it off of the ZERO-V tray, and all the lights go out. The packs only have maybe 10 track cycles on them, so i have no long term info to report, but they sure do rip for now. Just thought i would share.

- DaveW

RAD Dog Racing

iTrader: (2)

Thanks for the input, this will give me something to start out with.