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by kiev
Wed May 20, 2015 7:16 pm
Forum: Batteries and Battery Management
Topic: Battery only charging halfway
Replies: 111
Views: 32937

Re: Battery only charging halfway

... I'd like to believe that it is a fault with the management board, but the voltage difference grows as SoC declines, which indicates some capacity loss in the cell. It also seems that the other cells have some damage, as they aren't as in balance as they used to be. They're still very close, but...
by kiev
Wed May 20, 2015 1:38 pm
Forum: Batteries and Battery Management
Topic: Battery only charging halfway
Replies: 111
Views: 32937

Re: Battery only charging halfway

That's some excellent data you have collected. i haven't parsed it yet to try to determine if the car is just using the lowest cell voltage or the pack average as it's source for the fuel gauge indicator, but i thought that might be interesting also. The comparison graph of cell 10 with the rest of ...
by kiev
Wed May 20, 2015 10:10 am
Forum: Batteries and Battery Management
Topic: 1 bar blinking, no turtle, safe to drive for 10 miles ?
Replies: 17
Views: 5705

Re: 1 bar blinking, no turtle, safe to drive for 10 miles ?

hey tigger, i just use 4 miles for each bar as my range estimator and always try to stay above 2 bars except for doing the calibration charge procedure. +1 on the advice. If you want to do fewer charges and not top it off all the time, just fill it up to 15 bars on sunday and drive until its down to...
by kiev
Wed May 20, 2015 9:54 am
Forum: General Technical Discussions
Topic: Gearbox problems.
Replies: 14
Views: 8119

Re: Gearbox problems.

lol 'the new miev math' maybe--i corrected the example gear ratios...
by kiev
Tue May 19, 2015 2:37 pm
Forum: Modifications & Accessories
Topic: Trailer Hitch Installation
Replies: 63
Views: 33374

Re: Trailer Hitch Installation

Count me in for the 1/3-load (600 lbs?) rated aluminum version--i'll even commit to buy 3 of them and give them to my local miev-gang members if necessary.
by kiev
Tue May 19, 2015 10:35 am
Forum: Batteries and Battery Management
Topic: Battery only charging halfway
Replies: 111
Views: 32937

Re: Battery only charging halfway

PV1 wrote:So, it is now hitting lows more than .2 volts lower than the other cells. The EV warning light is now starting to light up.


Is that the electric motor unit warning light? Shaped like a car with an exclamation mark?
by kiev
Tue May 19, 2015 8:43 am
Forum: General Technical Discussions
Topic: Gearbox problems.
Replies: 14
Views: 8119

Re: Gearbox problems.

It looks like just a 2-pass gearbox with differential on the output. Typically you can get a maximum of about a 4:1 ratio in one gear pass--it's difficult to get much more than that. So for example take a 2:1 gear plus another pass at 3.5:1 and you end up with 7:1, because the gear ratios multiply e...
by kiev
Tue May 19, 2015 8:04 am
Forum: General / Main Owners Forum
Topic: Engine warning light after crash
Replies: 23
Views: 8076

Re: Engine warning light after crash

Yes it looks like the turtle can come on for other reasons also, and we don't know enough about the car yet to
take over control of it. Keep us posted what you find and how this works out.
by kiev
Tue May 19, 2015 6:59 am
Forum: General / Main Owners Forum
Topic: Engine warning light after crash
Replies: 23
Views: 8076

Re: Engine warning light after crash

hands wrote:...
turtle light is ON and car only drives in flat roads, unable to climb any hill...

Need to charge it up and get out of turtle mode--it reduces drive power to a limp.
by kiev
Tue May 19, 2015 6:51 am
Forum: General / Main Owners Forum
Topic: Engine warning light after crash
Replies: 23
Views: 8076

Re: Engine warning light after crash

If there is a problem with the Yaw/G sensor, then there should be an error code generated; if no code then it is likely okay. You really need to get a code reader to tell you all the trouble codes that are set and work thru the list. From the repair manual it appears to be under the carpet under the...

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