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9 Replies

  • Ductape wrote:
    I think if industry standard methods were actually losing 20% of battery capacity in only 25 charge cycles -as they claim- then we’d be hearing howls of complaints from EV owners.


    Yep and that is definetly not the case. I doubt either of our EV’s are losing more than a couple or three percent a year after 4 and a bit years. Most EV companies have 8 year warranties. Tesla is 8 years 192000 km.
  • 3_tons's avatar
    3_tons
    Explorer III
    They fail to mention the chemical mix of these various batteries (Lifepo4 or other??)... Either way, common sense dictates that when it comes to FAST charging on any battery, there ain’t no such thing as a free lunch’...
  • Way beyond the scope of RV use. Describes vehicle programming that we will never have access. This is controlled by the manufacturer.
  • I think if industry standard methods were actually losing 20% of battery capacity in only 25 charge cycles -as they claim- then we’d be hearing howls of complaints from EV owners.
  • The recommended charge rate on my 48v 100ah pack is 50 amps. Max 100. The best I can do is 34a with two chargers in parallel. Doesn't take long.

    My inverter will overload with "high voltage" if I allow the Outback solar controller to complete the float phase, so I've had cut back its voltage. Li's don't care if they're undercharged.
  • What is the "supercharge" charging rate? (Where "charging rate" is defined as the initial charging amps per AH of bank)

    We see with some Li info that starting at 100% charging rate, it is constant amps until about 65% SOC, then amps taper. Battle Born specifies using a 50% charging rate. We don't have good info on what SOC Bulk would end at with that charging rate, but might be closer to 80% ? We badly need to know that IMO.

    So if the car battery loses so much capacity after only a few cycles as in that article, we need to know if the charging rate they are using is way higher than what a typical RVer would use on his Li house batteries.

    If anything like the same charging rates, then that is bad news for your poor RVer that went Li :( A weekender RVer with 52 weeks in a year, can soon do 60 cycles like in that article. Yipes.
  • According to that piece, it seems like any use leads to a relatively quick reduction in capacity.
  • Without defining a "charging cycle", there is not much good information here.

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