Yyk525 User Manual | Exclusive

Do not use random cables. Use the shielded cable that came with the unit.

If the YYK525 displays "Err: Cell Count Mismatch," do not panic. The device is detecting the total pack voltage but not the balance lead. Remove the main lead, clean the contacts with isopropyl alcohol, and reconnect the balance lead before the main lead. yyk525 user manual exclusive

Most users panic when they see E03 on the display. According to the exclusive service notes: Do not use random cables