My engine is leaking coolant?

You say near the battery towards the top of the radiator, are you saying the radiator has a leak, part way up on it? if yes, take it out and bring it to a radiator repair shop, maybe they can solder it for you...or re-core it, cheaper than a new one!

Yes, there's some kind of leak from the passengers side of the radiator, towards the top. Would it be normal to only leak when the heater or defroster has been turned on?