Our 2009 Honda CRV was parked with the lights left on for a few days, and the battery was drained. I got the car running with a boost from another vehicle. The car providing the boost was running while I started the CRV. The CRV started, but appears to be no longer holding a charge. The battery is only a year old. I hear that I may have damaged the CRV by the manner in which the car was boosted. What exactly might I have damaged by that process?