Tech section strictly for the FJR. Everything from oil changes & suspension setup's to removing sheep hair from hard to reach places on the bike so that your wife never finds out.
MrZappo wrote:If these things have this major problem of having little to no power when cold, does anyone know if electric cars with similar batteries suffer the same affliction ? Strange that this is not talked about with cars using Lithium batts ...
The chemistry of the motorcycle batteries we are talking about is LiFePO4 (Lithium iron phosphate), the car batteries are Li-ion (LIB).
The car battery has better energy density -- more watts per pound, does not have the cold weather problems of the LiFe batteries but the Li-ion has fire, charging, # or recharges and depth of discharge issues that the LiFe does not. The LiFe battery is safe and has a longer life.
The Li-ion batteries can be mixed with cobalt, carbon used in the negative electrode and can have other chemicals added to the mix to 'tune them up'. The difference is the car battery is used for a long steady discharge, whereas the LiFe battery is intended for high current spikes during starting and still have good steady current supply.
For those that like to hurt themselves over thinking the batteries :
LiFePO4
Specific energy 90–110 Wh/kg (320–400 J/g)
Energy density 220 Wh/L (790 kJ/L)
Specific power >300 W/kg
Li-ion
Specific energy: 100 to 250 W·h/kg (360 to 900 kJ/kg)
energy density: 250 to 620 W·h/L (900 to 1900 J/cm³)
Specific power: 300 to 1500 W/kg
Now that's what I call an accurate answer ... Thanks !!!
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