[geekmaster]

I also know from previous experience that the PW3 should charge the repaired battery just fine, as long as it does not get stuck in a diags boot loop that repeatedly discharges the battery. I plan to remove CRP and try this again with a fully (mostly) discharged battery. If it works, I will see if I can make needed changes to CRP.

EDIT: A low capacity battery such as I used is functionally identical to an old "real" kindle battery with low remaining capacity. It is possible that the CRP trigger is sensitive to remaining capacity, and booting with the frontlight LEDs at full brightness (and remaining so in diags) causes this charge/discharge boot looping condition. There should be a relatively simple software workaround for this obscure problem. I am curious why the kindle is repeatedly booting with a low battery, when I have not pressed the power button to start it.