iPhone 11 Pro Query regarding USB C to lightning cable and iPhone 11 Pro Max charger?

[legionsunited]

Hello, I'm going to buy an used iPhone 11 Pro max from a local shop, but this device is a replacement device which doesn't have USB cable, charger and headphones and that's alright.

Now, my question is, I have iPhone 6s Plus.

Query1) Does USB A cable and 5W charger or 10 Watt iPad Air 2 charger w/ USB A cable will be able to charge the iPhone 11 Pro max or I get accessory not supported or any error?

Query 2) Will there be any issues to battery or battery health?

I don't want fast charging. I work from home

Thank you!

 

[now i see it]

Any iPhone charger and cable with lightning plug can charge that iPhone just fine
The smaller the charger (5 watt) the easier it is on the battery. Not only is the little 5 watt apple charger not going to hurt the phone's battery, it will actually be better for it than the big fast charger
The 12 watt iPad charger is fine too and I'd recommend it for that phone

 

[legionsunited]

Any iPhone charger and cable with lightning plug can charge that iPhone just fine
The smaller the charger (5 watt) the easier it is on the battery. Not only is the little 5 watt apple charger not going to hurt the phone's battery, it will actually be better for it than the big fast charger
The 12 watt iPad charger is fine too and I'd recommend it for that phone

Thank you so much!