Amazon.com: TekPower TP1863 12 Amp DC 13.8V Regulated Power Supply with Fuse Protection : Electronics
PC Power Supply with 13.8V & 5A - EEWeb
SADELTA SPS-1012 switching power supply 13,8 volt. 10 to 12 amps power supply with input at 220 volts and output at 13.8 volts. 10 continuous amps and 12 peak amps. Its size 250x155x115mm - AliExpress
117 AC - 13.8 Volt DC, 3 Amp Power Supply (D1B) - Walmart.com
Pyramid 10A 13.8-Volt Power Supply with Cigarette Lighter Adapter - Walmart.com