3 ms·
Even with relatively high rates of discharge, my non-expert understanding is that they are still far slower than capacitors. E.g. if you're trying to build a ra
by gpm 6y ago
Even with relatively high rates of discharge, my non-expert understanding is that they are still far slower than capacitors. E.g. if you're trying to build a railgun or absorb power from lightning strikes you better be using capacitors (which might be charged from a battery).
That last part of sort of the point, while batteries and capacitors serve the same theoretical function (storing energy), in practice they are used differently. One as a sort of buffer, the other for actual storage.
- magicalhippo 6y agoWhile true, even a battery pack used for small RC cars can output several hundred amps in bursts or even constant discharge. Take this[1] pack of four cells for example which is rated for 450A constant discharge and 650A bursts. And there are more extreme packs like this[2], still four cells, which is rated for over 1100A burst discharge. Sure a capacitor might do better for a brief instant, but li-io batteries can put out some serious energy quickly. [1]: https://hobbyking.com/en_us/graphene-5000mah-2s2p-hardcase-w-5mm-female-bullet-connector.html https://hobbyking.com/en_us/graphene-5000mah-2s2p-hardcase-w... [2]: https://hobbyking.com/en_us/turnigy-rapid-8000mah-2s2p-140c-hardcase-lipo-battery-pack-roar-approved.html https://hobbyking.com/en_us/turnigy-rapid-8000mah-2s2p-140c-...