Question is how to keep the psp going for 11 hours -
I thought about what is there is a battery powered USB thing plug in PSP and charge PSP with battery.
Does it exist?
How long does the PSP last playing movies? Any cheap trademe clones that lasts very long?
(they're 1 yr and 2 yr old, with 1 adult going with them only)
(in-flight movies may help but they have 'favourite' shows)