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Old 01-18-2017, 11:12 AM   #161 (permalink)
Stubby79
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Turtle

Weather has finally warmed up...and I've finally stopped working on other projects to see if the battery(and therefore the motor) perform better above freezing.

Yup.

She was managing to maintain 400a while accelerating in 2nd at 5 centigrade, instead of barely above 200a at -2c to -5c.

Take the effect of temperature...


And then add it (or more like multiply it) to the effect of heavy discharge...


...and you end up with your motor controller trying to protect your batteries from over-discharge.

Wouldn't be an issue with a higher voltage battery pack (72v at the moment)

Wouldn't be an issue if it was room temperature outside.

Wouldn't have been so off-putting if I had been sure that was all it was!

So, since she was a good girl, and it was warm enough out, I opted to rig together my little charger and give her some juice as a treat:


Good to see the Link10 can read finer amperages through it's "prescaler". Would suck if it couldn't read the charging properly...

Side note, the potential heart of a bigger charger that I won on ebay for cheap has arrived. That will be a project for down the road, though.


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