they have stick pack battery and also have side by side battery for sell,that's no need to solder by yourself...
But you also can buy the battery and soldering by yourself like 1/10 that kind...
Are you mean the charger for AA or AAA size battery?
If like that cannot ooo.....
I'm used the wall charger....i just cut the original connetor and change it to micro connector plug
yes...it's very slow for me i think....but it's fun to play too.....if you upgrade and used after market chassis...the car will fly.....almost same fast like 1/10 23T motor