Abnormal charging register data 
Regaddr: 00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F 10 11 12 13 14 15 16 17 18 19 1A 1B 1C 1D 1E 1F 20 21 22 23 24 25 26 27 28 29 2A 2B 2C 2D 2E 2F 30 31 32 33 34 35 36 37 38 39 3A 3B 3C 3D 3E 3F 40 41 42 43 44 45 46 47 48 
data:	 26 06 90 00 64 8B 00 9A C3 05 EA 00 DC 4B 3D A2 85 78 00 61 36 AA C0 7A 55 00 9A 0B 0A 01 C0 00 20 40 00 80 10 00 20 40 00 00 00 00 00 00 B0 00 00 00 31 00 00 3B 04 3B 14 00 00 2C BC 33 14 02 BC 00 4E 00 1E 00 1C 00 08 
data:	 26 06 90 00 64 8B 00 9A C3 05 EA 00 DC 4B 3D A2 85 78 00 61 36 AA C0 7A 55 00 9A 0B 0A 01 D0 00 00 00 00 80 10 00 20 40 00 00 00 00 00 00 B0 00 00 00 41 00 00 3A E6 3B 88 00 00 2C 42 40 88 02 D8 00 5A 00 1D 00 1D 00 08 
data:	 26 06 90 00 64 8B 00 9A C3 05 EA 00 DC 4B 3D A2 85 78 00 61 36 AA C0 7A 55 00 9A 0B 0A 01 D0 00 00 00 00 80 10 00 20 40 00 00 00 00 00 00 B0 00 00 00 2D 00 00 3B 76 3A 62 00 08 2A EE 44 62 02 1C 00 56 00 00 00 1E 00 08 
data:	 26 06 90 00 64 8B 00 9A C3 05 EA 00 DC 4B 3D A2 85 78 00 61 36 AA C0 7A 55 00 9A 0B 0A 01 C0 00 20 40 00 80 10 00 20 40 00 00 00 00 00 00 B0 00 00 00 2D 00 00 3B AA 3A F0 00 14 29 D4 44 F0 02 64 00 4B 00 00 00 03 00 08  
data:	 26 06 90 00 64 8B 00 9A C3 05 EA 00 DC 4B 3D A2 85 78 00 61 36 AA C0 7A 55 00 9A 0B 0A 01 D0 00 00 00 00 80 10 00 20 40 00 00 00 00 00 00 B0 00 00 00 2D 00 00 3A E8 3A 9E 00 16 29 DA 44 9E 01 B8 00 4F 00 1D 00 00 00 08 
data:	 26 06 90 00 64 8B 00 9A C3 05 EA 00 DC 4B 3D A2 85 78 00 61 36 AA C0 7A 55 00 9A 0B 0A 01 C0 00 20 40 00 80 10 00 20 40 00 00 00 00 00 00 B0 00 00 00 2D 00 00 3B 04 3A 18 00 00 29 DA 45 18 01 96 00 4B 00 1D 00 00 00 08 
data:	 26 06 90 00 64 8B 00 9A C3 05 EA 00 DC 4B 3D A2 85 78 00 61 36 AA C0 7A 55 00 9A 0B 0A 01 D0 00 

Normal charging register data ：
Regaddr: 00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F 10 11 12 13 14 15 16 17 18 19 1A 1B 1C 1D 1E 1F 20 21 22 23 24 25 26 27 28 29 2A 2B 2C 2D 2E 2F 30 31 32 33 34 35 36 37 38 39 3A 3B 3C 3D 3E 3F 40 41 42 43 44 45 46 47 48 
data:	 26 06 90 00 64 8B 00 9A C3 05 EA 00 DC 4B 3D A2 85 78 00 61 36 AA C0 7A 55 00 9A 0B 4A 01 D0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 B0 00 00 00 AD 00 42 3A FA 3A EE 00 12 2D 82 2F EE 02 EE 00 4F 00 1B 00 2F 00 08 
data:	 26 06 90 00 64 8B 00 9A C3 05 EA 00 DC 4B 3D A2 85 78 00 61 36 AA C0 7A 55 00 9A 0B 4A 01 D0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 B0 00 00 00 AC 00 42 3B 16 3A EE 00 06 2D 82 2F EE 02 EE 00 4E 00 1B 00 2D 00 08 
data:	 26 06 90 00 64 8B 00 9A C3 05 EA 00 DC 4B 3D A2 85 78 00 61 36 AA C0 7A 55 00 9A 0B 4A 01 D0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 B0 00 00 00 AC 00 44 3B 18 3A EE 00 14 2D 82 2F EE 02 EE 00 4F 00 1A 00 2C 00 08 
data:	 26 06 90 00 64 8B 00 9A C3 05 EA 00 DC 4B 3D A2 85 78 00 61 36 AA C0 7A 55 00 9A 0B 4A 01 D0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 B0 00 00 00 AF 00 3E 3B 18 3A EE 00 14 2D 82 2F EE 02 EE 00 4F 00 19 00 2F 00 08 

Compare the differences in register data：
Regaddr:                 1E  20  21  23  24  26  27  3132  3334
Abnormal charging data： C0  20  40  80  10  20  40  0031  0000
Normal charging data：   D0  00  00  00  00  00  00  00AD  0042


Functional definition of differentiation:
1Eh[bit4]：
VSYS Regulation Status (forward mode)
Type : R
POR: 0b
0h = Not in VSYSMIN regulation (VBAT > VSYSMIN)
1h = In VSYSMIN regulation (VBAT < VSYSMIN)


20h[bit5]：
VBAT over-voltage status
Type : R
POR: 0b
0h = Normal
1h = Device in over voltage protection

21h[bit6]：
VSYS over-voltage status
Type : R
POR: 0b
0h = Normal
1h = Device in SYS over-voltage protection

23h[bit7]
Charge status flag
Type : R
POR: 0b
0h = Normal
1h = Charge status changed

24h[bit4]
VSYSMIN regulation flag
Type : R
POR: 0b
0h = Normal
1h = Entered or existed VSYSMIN regulation

26h[bit5]
VBAT over-voltage flag
Type : R
POR: 0b
0h = Normal
1h = Enter VBAT OVP

27h[bit6]
VSYS over-voltage flag
Type : R
POR: 0b
0h = Normal
1h = Stop switching due to system over-voltage