Edit 3: When enabling advanced settings and disabling fast charging I found that the battery level stays the same. You'll see the charging light on the open spot cycle on and off depending on the power draw and need to charge. It's been floating around the same percent for the last hour. I have the transmit power set to the lowest and I'm on an active reflector. Im speculating under minimal power draw it would slowly charge to 100%. But with out knowing the battery charging logic from the developer, it's anyone's guess. Something Ive tried to look for but without success.
Edit 2: My open spot 4 pro does indeed charge beyond 90% when powered on. I wonder if one of the developers of this device can shed some light on how it limits charging the battery to prevent battery fatigue/damage?
Edit: It looks like it stops charging at 90%? I'll have to confirm this on my own open spot 4
https://forum.sharkrf.com/d/7647-new-openspot-4-wont-charge
HA2NON This is technically not true. Lithium Ion batteries do degrade even in storage if the voltage of the cells are at its max or near max voltage. That is why its recommended to store batteries around 50 percent charge. The higher voltage slowly damages the cells.
Maybe a charge limit option in a future firmware update?
Batteries produce electricity through a chemical reaction. High performance lithium batteries use a lithium material that is intentionally designed to be "sponge-like". In order to maximize the surface area available for chemical reactions. Like the sponge, the battery will struggle to find space for lithium ion once it approaches fully charged. It leads to heat and unwanted chemical reactions with the electrolyte, which converts lithium ions into lithium metal. This can be reversed with discharging. But over time, it may loose available lithium ions and the space to move into. Storing at 100% removes the ability to dissolve the lithium metal during discharge and can become permanent.
https://www.candlepowerforums.com/threads/why-does-storing-li-ion-battery-at-100-charge-damage-them.485013/