Long file. Snipped what may be interesting (few charging percentages until the problem happened, to keying on/off later, after the problem has manifested itself):
Firmware rev. 1536
Board rev. 125
Model W
....
04761 04/26/2019 16:41:37 Charging PackTemp: h 31C, l 26C, AmbTemp: 15C, PackSOC: 78%, Vpack:108.979V, BattAmps: -11, Mods: 01, MbbChgEn: Yes, BmsChgEn: No
04762 04/26/2019 16:51:37 Charging PackTemp: h 31C, l 26C, AmbTemp: 15C, PackSOC: 79%, Vpack:109.466V, BattAmps: -11, Mods: 01, MbbChgEn: Yes, BmsChgEn: No
04763 04/26/2019 16:54:13 Sevcon CAN Link Down
04764 04/26/2019 16:54:15 Sevcon CAN was lost. Restarting.
04765 04/26/2019 16:54:15 Module 00 Opening Contactor vmod: 109.457V, batt curr: -13A
04766 04/26/2019 16:54:15 Module 01 Opening Contactor vmod: 0.000V, batt curr: 0A
04767 04/26/2019 16:54:15 Sevcon Turned Off
04768 04/26/2019 16:54:15 DEBUG: Sevcon Contactor Drive OFF
04769 04/26/2019 16:54:15 DEBUG: Sevcon Has Turned Off Contactor Drive
04770 04/26/2019 16:54:15 Module 00 Opening Contactor vmod: 109.457V, batt curr: -13A
04771 04/26/2019 16:54:15 Module 01 Opening Contactor vmod: 0.000V, batt curr: 0A
04772 04/26/2019 16:54:15 INFO: Disabling Calex 720W Charger 0
04773 04/26/2019 16:54:15 INFO: Disabling Calex 1200W Charger 1
04774 04/26/2019 16:54:16 DEBUG: Module 00 Contactor is now Open
04775 04/26/2019 16:54:17 Sevcon Turned On
04776 04/26/2019 16:54:27 Precharge Timed Out. CapV: 0V
04777 04/26/2019 16:54:27 Module 00 Opening Contactor vmod: 109.363V, batt curr: 0A
04778 04/26/2019 16:54:27 Module 01 Opening Contactor vmod: 0.000V, batt curr: 0A
04779 04/26/2019 16:54:27 Sevcon Turned Off
04780 04/26/2019 16:54:29 Sevcon Turned On
04781 04/26/2019 16:54:39 Precharge Timed Out. CapV: 0V
04782 04/26/2019 16:54:39 Module 00 Opening Contactor vmod: 109.332V, batt curr: 0A
04783 04/26/2019 16:54:39 Module 01 Opening Contactor vmod: 0.000V, batt curr: 0A
04784 04/26/2019 16:54:39 Sevcon Turned Off
04785 04/26/2019 16:54:40 Malfunction Indicator (Engine light) turned on because of Sevcon can error
04786 04/26/2019 16:54:42 Sevcon Turned On
04787 04/26/2019 16:54:51 Too many Sevcon CAN retries. Shutting Down.
04788 04/26/2019 16:54:51 Entering Critical Error Low Power Shutdown
04789 04/26/2019 16:54:51 INFO: Disabling External Chg 0 Charger 2
04790 04/26/2019 16:54:51 INFO: Disabling External Chg 1 Charger 3
04791 04/26/2019 16:54:51 Sevcon Turned Off
04792 04/26/2019 16:54:51 Module 00 Opening Contactor vmod: 109.316V, batt curr: 0A
04793 04/26/2019 16:54:51 Module 01 Opening Contactor vmod: 0.000V, batt curr: 0A
04794 04/26/2019 16:54:51 Key On
04795 04/26/2019 16:54:51 Resetting because of key cycle.
04796 04/26/2019 16:54:51 CPU Soft Reset: Key cycle from low power shutdown.
04797 0 DEBUG: Reset: External
04798 0 BMS Reset Unknown
04799 0 Key On
04800 0 DEBUG: Module scheme changed from None mode to Stopped mode
04801 0 Module 00 Opening Contactor vmod: 0.000V, batt curr: 0A
04802 0 Module 01 Opening Contactor vmod: 0.000V, batt curr: 0A
04803 0 Turning ON DCDC
04804 0 Calex 720W Charger 0 Connected
04805 0 Calex 1200W Charger 1 Connected
04806 1 DEBUG: Module scheme changed from Stopped mode to Charging mode
04807 1 Module 00 CAN Link Up
04808 1 Module 00 Registered serial: 18tb0197, vmod: 108.788V
04809 04/28/2019 02:03:48 Sevcon Turned On
04810 04/28/2019 02:03:48 INFO: Max allowed voltage difference is 500mV
04811 04/28/2019 02:03:57 Charging PackTemp: h 16C, l 15C, AmbTemp: 11C, PackSOC: 80%, Vpack:108.606V, BattAmps: 0, Mods: 00, MbbChgEn: Yes, BmsChgEn: No
04812 04/28/2019 02:03:58 Precharge Timed Out. CapV: 0V
04813 04/28/2019 02:03:58 Module 00 Opening Contactor vmod: 108.781V, batt curr: 0A
04814 04/28/2019 02:03:58 Module 01 Opening Contactor vmod: 0.000V, batt curr: 0A
04815 04/28/2019 02:03:58 Sevcon Turned Off
04816 04/28/2019 02:04:00 Sevcon Turned On
04817 04/28/2019 02:04:10 Precharge Timed Out. CapV: 0V
04818 04/28/2019 02:04:10 Module 00 Opening Contactor vmod: 108.629V, batt curr: 0A
04819 04/28/2019 02:04:10 Module 01 Opening Contactor vmod: 0.000V, batt curr: 0A
04820 04/28/2019 02:04:10 Sevcon Turned Off
04821 04/28/2019 02:04:11 Malfunction Indicator (Engine light) turned on because of Sevcon can error
04822 04/28/2019 02:04:12 Sevcon Turned On
04823 04/28/2019 02:04:22 Precharge Timed Out. CapV: 0V
04824 04/28/2019 02:04:22 Module 00 Opening Contactor vmod: 108.599V, batt curr: 0A
04825 04/28/2019 02:04:22 Module 01 Opening Contactor vmod: 0.000V, batt curr: 0A
04826 04/28/2019 02:04:22 Sevcon Turned Off
04827 04/28/2019 02:04:24 Sevcon Turned On
04828 04/28/2019 02:04:27 Too many Sevcon CAN retries. Shutting Down.
04829 04/28/2019 02:04:27 Entering Critical Error Low Power Shutdown
04830 04/28/2019 02:04:27 Sevcon Turned Off
04831 04/28/2019 02:04:27 Turning OFF DCDC. Flags: 0x00
04832 04/28/2019 02:04:27 Module 00 Opening Contactor vmod: 108.592V, batt curr: 0A
04833 04/28/2019 02:04:27 Module 01 Opening Contactor vmod: 0.000V, batt curr: 0A
04834 04/28/2019 02:04:27 Key Off
04835 04/28/2019 02:04:27 Key On
04836 04/28/2019 02:04:27 Resetting because of key cycle.
04837 04/28/2019 02:04:27 CPU Soft Reset: Key cycle from low power shutdown.
04838 0 DEBUG: Reset: External
04839 0 BMS Reset Unknown
04840 0 Key On
04841 0 DEBUG: Module scheme changed from None mode to Stopped mode
04842 0 Module 00 Opening Contactor vmod: 0.000V, batt curr: 0A
04843 0 Module 01 Opening Contactor vmod: 0.000V, batt curr: 0A
04844 0 Turning ON DCDC
04845 0 Module 00 CAN Link Up
04846 1 Module 00 Registered serial: 18tb0197, vmod: 108.780V