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Old 01-03-2005, 03:16 PM
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Greg Covey
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Default RE: TO: GREG COVEY (...OR anyone else who knows)

Hi Jim,

Don't worry about being frustrated. The learning curve starts out looking huge but you can cover plenty of ground in a short period of time.

The reference to 24-32 cells is for NiCd or NiMH. Simply divide by 3.5 for a close estimate of Lithium cells or use a general reference of 10 cells NiCd is equal to 3 cells Lithium.

Example: 30 cells NiCd is about 10 cells Lithium or a 10s configuration for about 36 volts under load. Most folks use 3.6v per Lithium cell under load.

Power is measured in watts which is voltage times the current. (i.e. P=IE)

I think that in your post above, you mixed 3.7 volts with 3.7 amps.

For your Actro 40-6 motor using a 6s Lithium pack,

1000 watts = (6x3.6v) / current needed
1000 watts = 21.6v / 46.3amps

So you need a Lithium pack with a 6s configuration that can deliver 46amps continuous.