El Luchador
100 mW
hi guys,
im new here, and 100.00% of the stuff here is above my head.
ive been researching NIGHT and DAY for 2 weeks now and I found some good information here and thought maybe you all can help.
I come from drag racing where runs are 5-6 secs long and i noticed some people switching to lithium batteries. i can save about 50 lbs switching to lithium. and if i go this route i can do it inexpensively. I havent found a cheaper way to knock 50lbs out of my car.
i looked at lifepo4 with a123 cells but i dont want to solder
so i looked at headway and calb lifepo4 but they are quite heavy
finally i found lipoly cells which i believe would do what i need and would come in at less than 5lbs.i need to start the car a few times in the lanes, and make a 5-7 second pass. the only electric items are efi box, 4 dis coils, o2 sensor, and all engine sensors. the car has no alternator, lights,horn, radio,gauges, electric water pump, electric fans etc, none of that. just the efi box, sensors, and 4 coils.
the starter draws a max of 250 amps, and settles to about 175, and the electronics draw maybe 25 amps.
i settled on 2x 8000mah 5s1p packs, 25-50c discharge because i calculated 16 amp hours, up to 800 cranking amps, and still leaving plenty of juice for a few starts and my pass. i will charge the battery between rounds.
OK, here are my questions
1. Can I please get some recommendations on a decent charger that will balance charge a 5s lipoly pack, or maybe even 2 packs at once, and not be too slow? if i can get full charge in 30-45 minutes that is plenty for me.
i would also like one that prevents overcharge.
2. do i need a LVC? how does it attach to the pack? very confused on this. will it allow the allow the packs to deliver 250+ amps?
could i get a recommendation on one , if needed?
3. i will have the packs in a removable container and charge outside of the car. im worried about fires. should i try to have them in a fire safe enclosure/material while in the car?
4. how does one go about calculating how many AH will be used up during a pass?
5. anything else i need to know?
thanks all, and i greatly appreciate any help that i do get.
im new here, and 100.00% of the stuff here is above my head.
ive been researching NIGHT and DAY for 2 weeks now and I found some good information here and thought maybe you all can help.
I come from drag racing where runs are 5-6 secs long and i noticed some people switching to lithium batteries. i can save about 50 lbs switching to lithium. and if i go this route i can do it inexpensively. I havent found a cheaper way to knock 50lbs out of my car.
i looked at lifepo4 with a123 cells but i dont want to solder
so i looked at headway and calb lifepo4 but they are quite heavy
finally i found lipoly cells which i believe would do what i need and would come in at less than 5lbs.i need to start the car a few times in the lanes, and make a 5-7 second pass. the only electric items are efi box, 4 dis coils, o2 sensor, and all engine sensors. the car has no alternator, lights,horn, radio,gauges, electric water pump, electric fans etc, none of that. just the efi box, sensors, and 4 coils.
the starter draws a max of 250 amps, and settles to about 175, and the electronics draw maybe 25 amps.
i settled on 2x 8000mah 5s1p packs, 25-50c discharge because i calculated 16 amp hours, up to 800 cranking amps, and still leaving plenty of juice for a few starts and my pass. i will charge the battery between rounds.
OK, here are my questions
1. Can I please get some recommendations on a decent charger that will balance charge a 5s lipoly pack, or maybe even 2 packs at once, and not be too slow? if i can get full charge in 30-45 minutes that is plenty for me.
i would also like one that prevents overcharge.
2. do i need a LVC? how does it attach to the pack? very confused on this. will it allow the allow the packs to deliver 250+ amps?
could i get a recommendation on one , if needed?
3. i will have the packs in a removable container and charge outside of the car. im worried about fires. should i try to have them in a fire safe enclosure/material while in the car?
4. how does one go about calculating how many AH will be used up during a pass?
5. anything else i need to know?
thanks all, and i greatly appreciate any help that i do get.