David, Why are you unplugging the charger? Typical Li-Ion chargers or BMS will shut off the power into the battery when max level is reached. Cor.
On Sun, Mar 20, 2022 at 1:52 PM David Nelson via EV <ev@lists.evdl.org> wrote: > > Hi, > > I'm replacing the T-875 battery pack in a golf cart with a 48V Dakota > Lithium LiFePO4 battery. I also ordered their 15A charger to make sure > it would play nice with the builtin BMS. I was very frustrated and > disappointed to discover that this charger puts a continuous 0.12A > drain on the battery when the charger is not plugged in. This golf > cart is sometimes parked for a few months during the winter and I > don't want the charger running the battery flat. I'm also trying to > make this as user friendly as possible since the T-875 pack didn't > last very long due to no care of the pack. > > I first thought that I could install a NO relay with an AC coil which > would close when the AC cord was plugged in and so ordered one. Then I > thought I better see if there is any arcing when connecting the > charger to the battery pack. Yep. There is a nice pop when connecting > the charger so a relay/contactor would not last very long with that. > So I decided to find a diode which I could use but I'm not having luck > in finding something since I don't know exactly what parameters I need > to search with. Does anyone with more EE knowledge than me have a > recommendation? I do have room just above the motor area and beside > the controller to mount something to the frame. A recommended > heatsink, if needed, would be helpful, too. > > Thank you, > > David D. Nelson > _______________________________________________ > Address messages to ev@lists.evdl.org > No other addresses in TO and CC fields > UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub > ARCHIVE: http://www.evdl.org/archive/ > LIST INFO: http://lists.evdl.org/listinfo.cgi/ev-evdl.org _______________________________________________ Address messages to ev@lists.evdl.org No other addresses in TO and CC fields UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub ARCHIVE: http://www.evdl.org/archive/ LIST INFO: http://lists.evdl.org/listinfo.cgi/ev-evdl.org
