I recently set up 14kW of LiFePo4 batteries and I'm now on day 8 without charging them. I'm trying to figure out if it's better to charge them every day from 90% to 100% or to charge once a week from 25% to 100%. What's the best practice for maintaining battery health while getting the most out of them?
3 Answers
It really depends on what 'better' means for you. If you're using a Battery Management System (BMS), you shouldn't worry too much. Even if you mishandle it a bit, you're only shortening its lifespan by a little. Plus, with how fast battery tech evolves, who knows what improvements we'll see in the next decade? It’s probably more important to avoid keeping it fully charged for too long daily. Regular balancing matters, but a weekly charge from 25% to 100% could also work fine!
For sure! Understanding how your charge controller works is key. If it keeps the cells at high voltage too long, that can hurt your battery life, so always check that!
Honestly, I wouldn't go for either extreme. Charging every other day from around 80% to 90% is a solid approach. Avoid going too low (like below 20%) or too high (above 90%)—that'll help keep your battery life up.
For LiFePo4 batteries, they can handle a ton of cycles without much degradation. Daily charging to 100% isn't a big deal if you're not keeping them at max voltage for too long. So go ahead and top them off daily if you want, but try not to stress too much about it!
Totally agree! A good balance approach like 25-100 over the week is fine, and making sure you're not holding it at high voltage is crucial for longevity.