Originally Posted by
PaulRivers
To be fair, you can buy a spare lith-ion camera battery for popular cameras for $5-$10 on amazon nowadays. They're 2 small you could carry 2 and still use less space than 2 AA's.
But you can't share that spare with a GPS, or radio,or anything else. I have about 10 gadgets that all use AA's so I can have just a handful of spares and only one charger. If i bought all lithium ion devices I'd need 10 chargers and 10 different spare batteries. And then would need to replace those batteries every 3-4 years, NiMH AA's last 10 or more, I have some I bought in 1999 that just dropped below 80% capacity and are now in use in kids toys.