Ok.
I think there is a slight comm issue here.

Good.- You understand ham is there...use it until you read whatever pertinent write-ups by whomever on whatever stating "use apt" or the command line in xterm or whatever. Then follow their screw-up-proof instructions EXACTLY... if whatever you wish to do could burn you...don't do it. Until you are super-savvy and feel comfortable with understanding exactly the instructions whomsoever is giving...THEN go for it.
Otherwise stick to ham for a while..

Questionably so-so .-
I did not say repos from maemo.org. (although nothing wrong with them)
I said maemo-repos.com
all the cat.'s you need...even the gone - obsoleted nokia ones (if you need anything from them) are there highlit in blue...ready to click-install.

Bad ...very very very bad -
I do not suggest in any way ever...
charging batteries in a method that hasn't been thoroughly tested, approved and recommended.
Get proper bl5j batteries.
Get proper bl5j chargers.
Very simple.
I personally would never use anything else for the possibility of ruining the battery and harming the device

Actually on the topic of charging...
slightly off (immediate) topic...
I just recently ran into this.
http://www.ebay.ca/itm/Kaito-KA720-A...QAAOSwymxVQsjR
which seems quite smart...
since standard wind-up chargers are very sketchy when it is a must in keeping the cranking consistent to provide the charge properly...(something which made me shy away from such chargers since playing with one...)
this charger stores the cranked charge in an onboard internal batt. for use when needed...
a much better and safer method of charge transference in my opinion.