AnyWatt MS User Guide
In MagSafe 1 Adapter specification, it is 16.5V-18.5V/4.6A. However, the MacBook Pro require the 20V option. Referring to the USB C PD standard, when using the combination of 60W/85W MagSafe 1 Adapter to MacBook Pro. It will output 15/3A 45W to charge the MacBook Pro.
The 45W charger output after connecting via AnyWatt, due to the power requirements of MacBook Pro (60W&87W) will go into protected mode (not output) as the power draw far exceeds its output.
This is because the MagSafe 1 (L Sharp) maximum voltage is capped at 14.5V and when connected to the AnyWatt it will lose some of this voltage and the power draw from the MacBook is higher than the output. The MagSafe 1 will then go into protected mode.
The MagSafe 2 (T sharp) has a output of 14.8V which is enough after connecting to AnyWatt to charge the MacBook 12
The MagSafe 2 85W adapter can output at 20V or 18.5V randomly when it is connected AnyWatt. If it is output has been selected at 18.5V it will only charge at 15/3A (45W). To enable the 60W charging please reconnect the USB C end of AnyWatt and replug it to the MacBook.
To check if it is 60W, Please following the instructions below: