This is what I just found about charging the 'spinner'
1. When the battery has run down when first inserted, the button LED flashes quickly 3 times & then goes out for a few seconds & then comes back on & stays on. The charger light turns red.
2. Once it reaches a certain charge state, the button LED flashes rapidly 8 times & then goes out. But the charger continues charging & the charger light remains red for about 30-45 minutes, then the charger LED turns a solid green.
It seems to charge using a 2 stage process but cannot confirm if it is employing a CC/CV charge which is the correct way to charge Lithium Ion batteries, but it certainly behaves that way & is NOT a faulty battery.
It's perfectly all right to remove the battery after stage 1 has completed & use it. It may even extend the life of the battery.
Credit for this info goes to Thrasher in Florida.
Credit for all the typing goes to me since my D--- Computer wouldn't allow me to cut & paste!!!! Phew