DIY 48V 18650 lithium-ion cells Battery Pack (spot welded)

Building a 48V 42Ah 13s15p 18650 lithium-ion cells battery pack. Made from rejected 10s4p Bosch packs. - 13 serial, 15 paralleled 2850Ah 2C max LG 18650 Lithium-ion cells. - Spot welded x 7mm 99% pure nickel strips. - 30-60 Amps BMS. - 12 AWG Wires. - 230mm diameter Battery Shrink Wrap - 12V - 48V configurable battery meter. - 50A anderson connectors for charge and discharge Music: M83 - Midnight City *Update: Battery is finally tested. Unexpected that I can’t even notice it is really charging to