I received one of the LG Marquee refurbs recently (for my daughter). With minimal use the battery only lasts about 6 hours. What we see happen is the battery takes about 5 hours to get to 50% ( minimal use, mostly texting) and then it goes to zero in about an hour (and the battery widget confirms that type of quick run down once 50% is hit). The biggest power use is cell standby at around 60%, which seems high (on my Galaxy standby uses about 10%, but that's my only point of comparison), display is 10%.
To me this seems like a battery that either won't fully charge (thoguh the status says it does fully charge) and/or is a bit wonky on discharge.
I've put on Battery Monitor Widget to try and collect more details, but to me it seems like there's something wrong as I would expect it to go at least 20 hours for the way it's being used (idle most of the day while my daughter is in high school ).
I would have said it's maybe because inside the building she doesn't get a strong signal so the radio is burning the power, but that doesn't explain why the battery drain consistently goes up when the battery gets down to 50%, even when she's at home and has plenty of signal.
Do you think it's a defective battery? Or a problem with the phone? Any other ways to nail down what's causing this? I've googled and can't find anyone with this type of problem with the phone.