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Questions regarding Li-ion (lithium-ion) cells and batteries, including proper charging, protection, and usage.

2 votes
3 answers
317 views

What resistor network topology to use when measuring thermistors in a battery pack

Some EV competitions require that 20% of the cells in a battery pack be monitored for temperature, and go on to strongly recommend that it be 100%. Considering that batteries can easily contain hundre …
Kenn Sebesta's user avatar
2 votes
2 answers
317 views

Multi-cell Li-ion charging from 5V USB, without boost circuit

For various reasons I'm happy to describe in the comments section, I would like to charge large (>30S @ 1-30 Ah) Li-ion packs directly from USB. Speed is not critical and multi-day (or week) charging …
Kenn Sebesta's user avatar