36-volt mobile phones at the site are dangerous.
36v voltage can not directly charge the mobile phone battery, because the general mobile phone battery is composed of three parts: battery battery, protection circuit and shell. At present, the mobile phone battery is a lithium-ion battery (non-standard occasions are often called lithium batteries), and the positive electrode material is lithium cobalt acid. Standard discharge voltage 3.7v, charge cut-off voltage 4.2v, discharge cut-off voltage 2.75v. If you must charge with 36v voltage, you must have the corresponding charger, which is divided into direct charge and seat charge. Dc converts 220 AC power supplies into 5V DC power supplies, inputs them into mobile phones, and restores them to batteries through mobile phone charging circuits.
No, we need to change the pressure. The transformer of your charger is changed from 220V to 4.2V DC and will not work properly when plugged into the 36V safe voltage. It's a lot of work. The transformers are all integrated circuits.
You can't charge a phone directly with a direct charge at 36 volts. The charger of the mobile phone is generally five volts of voltage, to charge the mobile phone needs to choose a reasonable charger, with 36 volts of voltage, it is easy to cause damage to the mobile phone.