556 fires in three years, six dead and a call-out every other day. We speak to the firefighters and doctors struggling to cope with a deadly new epidemic.

  • cynar@lemmy.world
    link
    fedilink
    English
    arrow-up
    0
    ·
    2 months ago

    They need a moderate spike to get the motor moving, then a steady current to keep it going.

    E.g. my ebike is 250W @ 36V. That’s 7A at full (continuous) power. A lithium ion battery can be discharged at around 10C while a lifepo4 battery can only do 1C discharge. My 13Ah battery could handle it, even with the 20% capacity loss at 0.67C (7/(13*0.8)). A 500W version would exceed the battery rating however, if it’s lifepo4, while being fine with lithium ion.

    Basically, lifepo4 batteries could handle a low end ebike, but would likely still want some super capacitors for spikes. They would need to scale up significantly in size to handle more powerful motors.