Alternator - 4Runner

Last Friday I left the headlights on my 4Runner on all day and drained my battery. (The alarm bell doesn't work.) I jump-started it and took it to a mechanic who charged the battery. It ran okay all weekend, but I noticed that my battery warning light was on some of the time, but not all the time. Monday morning, while driving to work, the engine began to sputter. For about 2 miles it threatened to quit. Then it began to run smoothly again and I was able to get back to the mechanic. He said I needed a new alternator and I had him install one. It cost $395. My question is whether it is possible or likely that, by recharging the battery incorrectly, he blew out my old alternator?

An alternators job is to MAINTAIN the state of charge in a battery and NOT to recharge a dead battery...so by jump starting and driving your suv you were using/over working your alternator and most likely is what burned it up...next time find an alternator/starter rebuild shop and have them rebuild yours as it will save you money

An alternators job is to MAINTAIN the state of charge in a battery and NOT to recharge a dead battery...so by jump starting and driving your suv you were using/over working your alternator and most likely is what burned it up...next time find an alternator/starter rebuild shop and have them rebuild yours as it will save you money

Thanks.