Here is my "oh shit" kit. AC WORKS RV/Range/Generator 14-50 50Amp Plug to 6-20R 15/20Amp 250Volt Adapter (To 6-20 Flexible W/Breaker) https://smile.amazon.com/dp/B083YYCBRH/ref=cm_sw_r_sms_apa_i_td86EbJFHVQXX

BloomGrow 110V / 120V to 220V / 240V Plug Adapter for US (1 PC) https://smile.amazon.com/dp/B075FTC9RT/ref=cm_sw_r_em_apa_i_3e86EbSH8KDYW 

These 2 items give you a current protected solution. It gives me about 4% per hour.

No, that will not work. You have a 14-50, so you need an adapter that goes from 14-50 to 6-20 such as this and then another to go from a 6-20 to 5-15 like this.

Do not get one that goes straight from 14-50 to 5-15; those only output 120 volts and you will be sorely disappointed.

AC WORKS RV/Range/Generator 14-50 50Amp Plug to 6-20R 15/20Amp 250Volt Adapter (To 6-20 Flexible W/Breaker) https://smile.amazon.com/dp/B083YYCBRH/ref=cm_sw_r_sms_apa_i_td86EbJFHVQXX

BloomGrow 110V / 120V to 220V / 240V Plug Adapter for US (1 PC) https://smile.amazon.com/dp/B075FTC9RT/ref=cm_sw_r_em_apa_i_3e86EbSH8KDYW 

These 2 items give you a current protected solution. It gives me about 4% per hour with the stock EVSE that comes with the Bolt. This works if the campsite has 50A connections.

i made my own (as i was connecting to an older 30A circuit for an older welder), but i've seen this one mentioned more than once for people who don't want to make their own:

https://www.amazon.com/BloomGrow-110V-120V-220V-Adapter/dp/B075FTC9RT

and close enough, considering the cost difference.