Rep Power: 0

Hi. I have Honda civic 2007. I was changing headlight and pulled that while reservoir (probably coolant reservoir) and accidentally spilled some fluid on the battery as you can see in the picture.
Is that coolant?
Will it create any issue?
I spilled it yesterday and then did not drive car. What should I do now?
Do I need to fill up some coolant? How much? There is min and max indicator.
Can I buy and use any coolant or exactly buy the one already in the coolant reservoir?

Thank you.

 
Rep Power: 222

Rinse off the battery if you care. Honda blue coolant is what you're supposed to have in there.

 
Rep Power: 224

With the engine completely cool, fill it to the minimum line.