Just try the battery - ignore the lights for now - if it works its good, if not get hold of the supplier and get it replaced. Hopefully you got TWO batteries in your kit anyway. FYI most arrive with a charge and can be used straight away.
As for refilling carts, pull out the filler, wash it in warm water and pat it dry with papaer towel.
Fluff it back up a bit (you may even need to trim a bit off, they tend to overstuff them) and poke it back into the cart with a toothpick or tweezers or anything handy really lol. Add
juice from your
juice bottle until the top of the filler looks slushy but NOT pooled. If it pools jsut lay a paper towel across the top to wick up any excess.
Make sure your filler is at the top of your cart - it needs to reach the bridge when its attached to the atty.
Do a few primer puffs - pretend its a cigar basically.
If you hear popping/crackling nosies thats good.
If you hear gurgling bubbling noises thats flooded.
Remove cart and blow out atty.
Re-attach and try again
Should be good to go.