1. What brand of battery did you buy? Many inexpensive batteries are rebuilt, not new. You could have been sold a battery is funky
2. What warranty does the battery have? Many aftermarket batteries have a use type warranty. If the battery is warranted for four years, and it fails after two years, you get another battery for 1/2 price.
3 Batteries should have a tag that has punch outs for the month and year it was purchased - many sellers do not punch this out. What I do is write the date on the top of the battery with a magic marker and leave the receipt with my glove box papers - the slip should have guarantee info on it.
4. Did the tech check for current being drawn out of the battery when everything is supposed to be off. There is a minor amount of draw to run the clock, etc. Some culprits are the glove box light, the trunk light, etc. If you check these bulbs and they are warm (or HOT) the light may be on all the time. ctually I had a Volvo 850 that removing the glove box bulb did not cure the glovebox problem, I had to disconnect the wiring to the switch to fix the problem.Also check your car at night to see if anything is lit.
5 How often do you drive your car? How many miles per month?
6. If this problem is really a problem to you, take it to a dealer, then if it happens again, they are a on the hook and will probably try to fix it again for no charge.
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