inputs.text: not work nuvi 855 - put battery nuvi 855 nuvi kept rebooting loop put original battery back everything fine took battery powered nuvi using usb cable alone inserted battery 5 seconds nuvi displayed message \\invalid battery unit shutting 8\\ nuvi counted zero shut previous reviewer complained poor performance battery mine simply not work might different versions nuvi including mine apparently circuitry capable checking battery genuine garmin battery not thank goodness amazons no hassle return policy