Hello Piotr, 

I'm new here though it's my second WX 1. never modified exept by a reseller during warranty time ( fast charger now)

in about 6 years and 2 VX: 1rst problem....:)

 No more charging. Stops after few seconds and displaying  : high 430   low  292.

after several tries, charging came back for 1 time only.

a former owner of VX 1 helped me.

result is on photo.

I guess I shoul change 1 cell, maybe two.   or is it a BMS mistake?  and can I easily slow down the charging current to make batteries last longer?

Thank you.