Mine are being stored cool. I live in Central NY and they are in my unheated garage. hahaFind the voltage range of the cells, then discharge to the 60% charged voltage figure. Store the cells somewhere cool and your cells will then sit for years if needed without any degradation. Check periodically with a voltmeter just in case, but you're unlikely to see any change in voltage and almost certainly won't need to charge them.![]()
Solar may not be what you are looking for, however Will P at https://www.youtube.com/watch?v=kF_cVEYxj3E&t=204s , has several examples of simple chargers, and a good knowledge of Tesla module charge limitations. As I remember the cheap charge controllers can keep the battery modules between 24 and 92% with an Amazon solar panel for maintenance purposes.I have 16 tesla modules currently at 22.5v each. max i understand is 25v.
I'm looking for a charger to keep them alive while i finish my build. a golf cart charger or similar. can anyone recommend something in particular?
if Lithium batteries are disconnected from all parasitic loads (like BMS and environmental heat/cooling) there is almost no self-discharge. So, if the batteries are disconnected from all external loads, don't worry about it.Solar may not be what you are looking for, however Will P at https://www.youtube.com/watch?v=kF_cVEYxj3E&t=204s , has several examples of simple chargers, and a good knowledge of Tesla module charge limitations. As I remember the cheap charge controllers can keep the battery modules between 24 and 92% with an Amazon solar panel for maintenance purposes.