not sure how it would work for you but a month after i bought my g1 (got mine the day it came out) i called up and complained that my battery wouldnt charge above 80%, they claimed it was due to dead cells and they sent me a new one and told me to keep the old one
first they asked me to do a wipe, and they asked me if it was expanding (the battery), after the wipe and the battery looking fine they just sent me a new one, had it 3 days later, after rc29 came out it fixed my issue with the battery not charging up and the battery started working properly again
just recently i replaced my g1 through insurance (water damange) and asurion told me i only had to send the phone back, not the charger and battery and door that they sent with the replacement phone
i then bought the extended battery to test out and see how well it worked, if youve kept tally, im up to 3 regular batteries, a extended battery, 2 stock battery doors, and a extended door, for next to nothing
Ban ALL the good roms!