mindgames11
100 mW
found a large, heavy metal-cased battery sitting neatly on top of a construction dumpster.
when I opened it I thought it was a lead acid just based on appearance (I don't even know why I came to that conclusion.. besides the weight of the thing I guess because I wasn't seeing the prismatic cells that I'm familiar with seeing pictures of online).
but the voltage was within a decent range (I think it came home and tested at 43 maybe?). THE RED TEXT IS TOTALLY IRRELEVANT TO THE POST: Incidentally my stupid hybrid vehicle is eating and destroying its lead acid batteries which serve no other function then to start the computer in the car and run some accessories although it seems that the high-voltage system can take care of the accessories. I think I've got a short to ground somewhere and it's just draining the batteries- it's extremely irritating. I just brought my battery up here to give it a charge with my power supply and that finished maybe 4 hours ago, 15 minutes ago I went to use the battery to supply the power to my spot welder and no dice. multimeter read the voltage at 6 1/2 coming down from 12 1/2 just a few hours before so the car has kicked the crap out of it and I doubt it will take a charge. This will be fun: pull fuses on the vehicle until my current clamp indicates a reduction in power consumption than hunt around for a break in wire insulation. if that's even the source of the issue. Honestly the car was designed by morons it's a 2011 Ford fusion hybrid and there are so many unbelievably idiotic design flaws. I've seen middle schoolers, design better things. If anybody wants to hear me enumerate the design choices that I think should warrant the designer to be caned, then canned- I'd be happy to. somehow it helps deal with the issue mentally.
the BMS wasn't Chinese but I had Google lens do a translation which I included the photo of and the BMS indicates that it's for a lithium iron phosphate so I guess I'm glad that I didn't attempt to charge the battery to 54.8 when I first brought it home (thinking it was a lead acid) but merely brought it up to 48 V to see if it would take the juice.
I actually don't know the top off/saturation and safe low end voltages for lead acids. I kind of know them for lithium iron phos (3.6?) but not off hand like I do lithium-ion cells. Oh I just looked it up and I was nearly bull's-eye with a 3.65 saturation voltage 3.25 nominal 2.5 V discharge limit.
So, can someone tell me what's what here so I don't have to open up the whole battery to look farther.
Coincidentally I pulled off this battery because I want to either use a portion of the battery or rewire it to give me 12 V for my spot welder and then it actually occurred to me that I dont actually know EXACTLY what the hell this battery is- obviously a foolish way to proceed.
when I opened it I thought it was a lead acid just based on appearance (I don't even know why I came to that conclusion.. besides the weight of the thing I guess because I wasn't seeing the prismatic cells that I'm familiar with seeing pictures of online).
but the voltage was within a decent range (I think it came home and tested at 43 maybe?). THE RED TEXT IS TOTALLY IRRELEVANT TO THE POST: Incidentally my stupid hybrid vehicle is eating and destroying its lead acid batteries which serve no other function then to start the computer in the car and run some accessories although it seems that the high-voltage system can take care of the accessories. I think I've got a short to ground somewhere and it's just draining the batteries- it's extremely irritating. I just brought my battery up here to give it a charge with my power supply and that finished maybe 4 hours ago, 15 minutes ago I went to use the battery to supply the power to my spot welder and no dice. multimeter read the voltage at 6 1/2 coming down from 12 1/2 just a few hours before so the car has kicked the crap out of it and I doubt it will take a charge. This will be fun: pull fuses on the vehicle until my current clamp indicates a reduction in power consumption than hunt around for a break in wire insulation. if that's even the source of the issue. Honestly the car was designed by morons it's a 2011 Ford fusion hybrid and there are so many unbelievably idiotic design flaws. I've seen middle schoolers, design better things. If anybody wants to hear me enumerate the design choices that I think should warrant the designer to be caned, then canned- I'd be happy to. somehow it helps deal with the issue mentally.
the BMS wasn't Chinese but I had Google lens do a translation which I included the photo of and the BMS indicates that it's for a lithium iron phosphate so I guess I'm glad that I didn't attempt to charge the battery to 54.8 when I first brought it home (thinking it was a lead acid) but merely brought it up to 48 V to see if it would take the juice.
I actually don't know the top off/saturation and safe low end voltages for lead acids. I kind of know them for lithium iron phos (3.6?) but not off hand like I do lithium-ion cells. Oh I just looked it up and I was nearly bull's-eye with a 3.65 saturation voltage 3.25 nominal 2.5 V discharge limit.
So, can someone tell me what's what here so I don't have to open up the whole battery to look farther.
Coincidentally I pulled off this battery because I want to either use a portion of the battery or rewire it to give me 12 V for my spot welder and then it actually occurred to me that I dont actually know EXACTLY what the hell this battery is- obviously a foolish way to proceed.
