Feature:
– Support a full range of Macbook fast charging from 2008 to 2021
– Support the power meter to see the current, and help maintenance enthusiasts quickly judge the motherboard fault
– Support the whole series of Macbook boards booting into the system (to solve the problem that the battery is not installed, the signal of “BATLOW” which leads to the problem of not starting the machine) 
– Support new fast charging and single-board startup with T2 chip and M1 chip (15.4 inch and 16 inch without battery connection, single-board boot into the system)
– Add LCD digital display tube (when using the type-C cable, you can see the voltage input from the motherboard through the display tube) 6. The LCD on / off switch is mainly used to control the LCD nixie tube (when the T head or L head is used, the display of the LCD nixie tube can be turned off) 7. It has five protection functions of intelligent power supply (overcharge protection, over-current protection, over-voltage protection, constant temperature protection and short-circuit protection)
Applicable machine and size statistics:
For MacBook Pro 13.3/15.4/16 /17-inch ：A1297 A1278 A1286 A1502 A1425 A1398 A1706 A1707 A1708 A1989 A1990 A2159 A2141 A2289 A2251 A2338 2.For MacBook Air 11/13.3 inch：A1370 A1369 A1465 A1466 A1932 A2179 A2337 3.For MacBook 12 inch： A1534
L head :
It is suitable for 11 inches, 13.3 inches,15.4 inches, and 17inch MacBook, MacBook Air, and MacBook Pro machines from 2008 to 2011.T head:
It is suitable for 11 inches, 13.3 inches and 15.4 inches MacBook Air and MacBook Pro machines from 2012 to 2015TYPE_ C connector:
It is suitable for 12 inches, 13.3 inches, 15.4-inch es and 16 inch MacBook, MacBook Air, and MacBook Pro machines in 2015-2021 (And support band type_ C interface flat and mobile phone fast charge, through the power meter to see the current to judge the fault)Voltage and current comparison table of supported charger powerTYPE_ C head 96W charger, output voltage and current: 20.5V—4.7A, 15V—3A, 9V—3A, 5.2V—3A
TYPE_ C head 87W charger, output voltage and current: 20.2V—4.3A, 9V—3A，5.2V—2.4V
TYPE_ C head 61W charger, output voltage and current: 20.3V—3A, 9V—3A，5.2V—2.4V
TYPE_ C head 30W charger, output voltage and current: 20V—1.5V, 15V—2A, 9V—3A