First post... Welcome I know ... LOL

And I need help... Right ask for help no contributions and I start out with asking for help ....

but I am running out of time for Christmas and I need help so here it goes

3 things I need help with ASAP

1. Lipo's for 2 calderas 10e for my two older kids. Don't need the fastest thing around but fare priced, cool running, and long running... From what I read ace 4000 40c 2s?
Which are the same one as the roar approved? But half price?

2. Both cars are stock and have held up great for u haters, well excepts the steering hub thing the bottom screw rattles out so second question, do I need any additional parts to the ? MPO - 003 is it? Aluminum steering hub?

3. So then I need a charger.. Right... I know now nothing about them but I bough the oldest boy a modded out NQD tear into it that is running a 11.1V lipo then the caldera's will be running 7.4 lipo's

so a I need a affordable Maybe dual/double charger that can charger it all from both ac/dc aka 12v like from car in camping trips

links to to where and who to buy is really appreciated
I was into this years ago you the grass hopper hornet days now I am old and gray...

hoping maybe i be I and my three boys can find something other than videos games we can share

thanks guys....
christian