Battery status monitor – LED. Originally used for model cars and planes, it can be adjusted for 12 VDC use. Attach one to your FD battery.
Mini voltmeter 0 vdc-30 vdc. Approx. $8.00 at Adafruit.com
Battery status monitor – LED. Originally used for model cars and planes, it can be adjusted for 12 VDC use. Attach one to your FD battery.
Mini voltmeter 0 vdc-30 vdc. Approx. $8.00 at Adafruit.com