Quote:
Originally Posted by RedDevil
ditch the crap battery (not literally  ) and do LiFePO4... |
I'm just about there myself. I have a 4s 4.2Ah LiFePO4 battery connected to 6s 350 farad capacitors and will begin testing replacement of the lead-acid battery in the Camry soon. I'm putting a small current limiting resistor in series with the negative lead of the battery pack to limit the charge current since the pack is only rated for 2C charge. Unfortunately it also limits the discharge to roughly the same amperage even though it's rated to 30C. The capacitors alone should be able to supply cranking power though.
Total weight is 1Kg or about 2.2 lbs.
The car I'm testing on has a relatively high parasitic drain of 60mA, so I can only safely get 2 days of the car sitting parked before I have to be concerned about discharging the battery too far.
Quote:
Originally Posted by oil pan 4
Put the LiFePO4 battery on Anderson quick disconnects and your are all set.
I did go to maine this winter and did not have any starting issues.
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Just ordered my Anderson power pole's and will connect by "battery" with them. The only downside is the measly 45A rating. There are higher rated ones, but the cost and size go up substantially. For this reason, I'm running large ring terminals on the capacitors but going with the Anderson's for everything else. It will be nice being able to quickly disconnect the LiFePO4 to periodically run a balance charge on it.