I'm currently searching for a cheap and high capacity power source to power my slider and the mx2.
I had a look on a few threads and a lot of people seem to suggest the blue li-ion battery packs like this one:
http://www.ebay.com/itm/12V-DC-9800mA-R ... 4ac2f68505How much capacity is useful?
And in the shop of kids of all ages I found this pack (amazon link for english description)
http://www.amazon.com/Poweradd-Pilot-Pr ... ds=xtpowerwith 2300mAh - not exactly the one linked above.
and the exact model (in german)
http://shop.kids-of-all-ages.de/motion- ... k-23000mahI do like this one more because it seems more versatile, for charging the phone for example.
the 2300mAh version costs around 100 euro.
There is also a solar model for 10 bucks more, is it useful to spend a bit more for this?
Thanks for your help