Is there also way out for this? To be able turning off the BMS?Voltron said:But still, even minus the spark problem, always having the BMS on can damage a battery from parasitic draw if left not used for a while...
the on/off switch discussed in this thread wouldn't be possible with only balance leads; it doesn't disconnect the bms from the main leads of the pack, so if the bms is powered by those, it still drains the pack. it also doesn't disconnect any load (ebike motor controller, etc) from the cells, so any small standby current draw those systems have still drain the pack.john61ct said:My preference is to have the balance leads coming to the outside as well as the main power pair.
Sometimes multiples of, so the non-balncing protective BMS can stay hooked up while other monitoring / testing gear, and/or the balancer(s) and/or charger are also doing their thing.
Removing or replacing or upgrading the BMS is a piece of cake without unwrapping the pack.
And obviously isolation switch(es) are also easy to insert wherever you like.