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-   -   2012 EZGO troubleshooting post Lithium (https://www.buggiesgonewild.com/showthread.php?t=185948)

dc.901 08-04-2022 09:26 AM

2012 EZGO troubleshooting post Lithium
 
Hello all,
I have 2012 EZGO, that has 3-pin charge port. So, I think that is RXV??
Anyways, replaced the old lead-acid batteries with BigBattery BDGR 2x48v kit. I know this is not the most recommended but it shipped very fast and it also fit the budget.
Issue I am seeing after replacing the batteries is during driving some times (yes only happens intermittently) cart will just shut off.
This is scary because the wheels also lock.
Once when that happened, we check battery voltage is that is about 48v (BDGR kit is NMC).
What is strange is, we put cart in tow mode, rock it couple of times forward/backwards switch back to run mode and then it runs perfectly fine.
So, I am trying to figure out what is the issue? Batteries, lose connection somewhere or I should be looking at something else?

ojo 08-05-2022 06:46 PM

Re: 2012 EZGO troubleshooting post Lithium
 
That's the problem with lithium and the RXV. When the battery, due to any reason shuts off, the ebrake in the cart will engage.

ATLien 08-09-2022 06:59 AM

Re: 2012 EZGO troubleshooting post Lithium
 
Quote:

Originally Posted by dc.901 (Post 1902367)
Hello all,
Issue I am seeing after replacing the batteries is during driving some times (yes only happens intermittently) cart will just shut off.
This is scary because the wheels also lock.
Once when that happened, we check battery voltage is that is about 48v (BDGR kit is NMC)...

I'm no expert but have done a ton of research for my own install. Are you tripping the battery's BMS due to an over-current situation? If you do, in-fact, have an RXV (which has an AC motor) I'm not 100% sure the BDGR kit is allowing enough draw under heavy loads before the BMS trips and shuts the batteries down. I think the BDGR kit only allows 252A (for 6 Seconds). Try driving it more 'gingerly' for a few days (i.e. don't floor it, carry heavy loads, or try to go fast up steep hills) and see if the issue persists. If it goes away I'd bet that's your problem. For this reason I just purchased the HSKY kit for my 2Five (roughly the same guts as your RXV) due to its higher load capacity. I haven't installed it yet but I don't foresee any issues.


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