I have a bunch of apple phones and ipods that I use for music playback parked in speaker docks. All the apple stuff uses the older 30-pin connector for charging.
They're on charge while playing music 24/7.
I've been using some android phones in a similar manner charging via USB. Doesn't take long for the lithium batteries to swell.
I'm migrating to apple devices and I want to prevent the batteries swelling up.
Any ideas on how to prevent this? I don't care about running for long on battery, just want to keep the OS happy when I swap the phone in the dock.
I don't expect there's anything I can do in the charger.
Simplest thing I can think of is to put a pair of backtoback diodes in series with the battery.
Before I start busting plastic to get 'em apart, thought I'd ask if the charge algorithm might object and shut down. I'd like to keep some charge on the battery so I can remove the device from the dock without losing data.
Ideas?