3 ms·
Operating outside of the 20-80 percent range of a battery is what kills it (and high current draw), inside of that range and it acts like a spring. There should
by sitkack 2y ago
Operating outside of the 20-80 percent range of a battery is what kills it (and high current draw), inside of that range and it acts like a spring. There should be product design laws that make it difficult to sell products that abuse batteries in this way.
NASA did a bunch of longitudinal studies (long time duration , same components over that range) with Lion batteries and found almost no long term degradation after the initial capacity loss. Same for solar panels.
- NewJazz 2y agoIf you could somehow attest (via the BMS?) That a battery pack (and the individual serialized? Replaceable cells?) wasn't operated outside of some bounds, the aftermarket value of that battery pack and individual cells could be quite a bit higher.
- sitkack 2y agoI like that. Have the BMS sign its git commits. I have been toying with a spec for a BMS that monitors and logs the health of every single battery both on charge and discharge. What is more exiting, is that Sodium cells are much tougher and can be discharged to zero volts and stored in a discharged state. That also means that they can be shipped discharged and items incorporating them don't degrade while on the shelf or in shipping.