I wouldn't advise that... again 2-3% is negligible.
And you're putting a lot of faith in your BMS. Most battery fires occur from that very scenario of a charger being left connected.
Much depends on the charger and BMS. Some chargers continue to trickle charge after the green light comes on... some don't but will start charging again if the voltage settles below 100%... and others shut down and need to be cycled off before they will come back on.
Same goes for BMS. Some will continue to accept a charge, others once charging stops need to be cycled.
I had one perfectly fine battery that fell into this. Would charge to full 54.6v, but then settle at 54.2v after an hour or so. Charging would not resume if left plugged in. The only way it would go and stay at 54.6v was if I slow charged using a bench top power supply set to CC-CV at 1amp that would then trickle in <5 watts at the end of the charge and never really shut off but be putting out minimal negligible current.
Realize that going above a 100% charge quickly becomes unstable and dangerous... Really not worth the effort or risk. learn more
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