Got a Garmin NUVI for my car a month ago and now want to carry it on my bike rides.  Need input 5V @ 1 amp.  I want to use common AA or AAA cells. How to do it?

Would only use occasionally, never more than a few minutes to learn current location and then ride towards the hiway.  Too often getting totally lost and with no idea how to get to any hiway.

 

Plz do not recommend buying the Garmin power bank, nor any other power bank.  I want toss away batts.

AA AAA C D all nominal 1.5v. Will it work X3 ?  Only one way to find out. Just tape 3 in series, hook up to Garmin - you will have your answer

there are portable AA packs that can plug into the Garmin Nuvi 

https://www.amazon.com/Gomadic-Portable-Battery-designed-Garmin/dp/B0088NUWA4

http://www.newegg.com/Product/Product.aspx?Item=9SIA2462P06911

 

there are also some for phones that use the disposable AA batteries so that might be worth checking out

 

and some info here on  battery saving ideas

http://www.gpstraining.co.uk/training-support/what-are-the-best-batteries-for-a-garmin-gps