itchynackers wrote:Yes, probably the settings. Go through each one ( I suspect either Rshunt value, or LVC).
amberwolf wrote:If the Analogger was attached and running, go thru the data and see if the pack voltage dipped enough to trigger the CA's LVC (assuming you have the CA setup to cut throttle upon LVC).
You could have a bad cell or connection in or from the pack causing a voltage drop under load.
If the pack just sat around totally unused, then if it has a BMS in it it could easily drain one or more cell groups in the pack if left connected to the cells for months.
It would be even worse if the pack was left connected to the controller/CA/etc. for all that time, as it would have drained it down to BMS LVC, and then the BMS would have continued to drain whichever cell groups power the BMS, possibly to zero.
That would leave you with at the least an unbalanced pack after a first charge, requiring etiher manual balancing or leaving it on the charger for potentially weeks while the BMS balances things out. At worse, it could have damaged cells causing higher Ri in them and probably lower capacity.
...The car ran fine without the Cycle Analyst attached. When the AC was hooked up, a slight press on the throttle got the car a start, but then quickly cut out. This would repeat each time. Removing the AC would allow the car to run normally.
Pletch wrote:48v 10Ah LiMn eZee battery pack
Pletch wrote:The battery has no BMS. The charger is the one that grin sells with the 48v 10ah LiMn battery sold as an option for the eZee kit. It is listed as a 3amp one place and 4amp in another. In the Q&A, they say the eZee controllers use a RShunt running 1.3-1.6 mOhm.
It is pictured at the following link:
Philistine wrote:If it is a CA DP, if the Rshunt value was incorrectly entered, wouldn't the maxamps limit cut in strangely like that and cut the throttle. Regardless, it is essential that the Rshunt value be correctly entered for the CA to have any purpose anyway (if it is a CADP).
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