What does the simultaneous flashing of the 4 battery indicators on the OSTER GoMAX BLSTGFPB20000 mean?

Q: What does the simultaneous flashing of the 4 battery indicators on the OSTER GoMAX BLSTGFPB20000 mean?

The manual for the OSTER GoMAX BLSTGFPB20000 does not document the state where all 4 battery LED indicators flash simultaneously . The officially described states in the manual are as follows: Charging: only the current level indicator flashes, the others remain steady. For example, between 75% and 100%, the first 3 indicators are steady and only the 4th flashes. Fully charged: all 4 white indicators are continuously steady, with no flashing. Error (blades jammed or bowl improperly secured): it is the power indicator and the On/Off indicator that flash rapidly - not the 4 battery indicators alone. The simultaneous flashing of the 4 battery indicators only most likely corresponds to one of these cases: Lithium-ion battery protection mode : temperature too high or too low, or voltage out of the tolerated range. Solution: unplug the USB-C cable, wait 10 to 15 minutes at room temperature (18-25°C), then reconnect. Initialization state during the first charging cycle : may appear for a few minutes at the start of the very first cycle before charging progresses normally. Battery defect : if the state persists for more than 15 minutes with the certified 5V/2-3A adapter plugged in and the blender does not start, the removable lithium-ion battery may be defective. Since the battery is removable (accessible with a Phillips screwdriver, reconnecting in order: 3-pin connector first, then 2-pin), a warranty replacement of 2 years is possible with Oster if the problem persists.

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The manual for the OSTER GoMAX BLSTGFPB20000 does not document the state where all 4 battery LED indicators flash simultaneously. The officially described states in the manual are as follows:

Charging: only the current level indicator flashes, the others remain steady. For example, between 75% and 100%, the first 3 indicators are steady and only the 4th flashes.
Fully charged: all 4 white indicators are continuously steady, with no flashing.
Error (blades jammed or bowl improperly secured): it is the power indicator and the On/Off indicator that flash rapidly - not the 4 battery indicators alone.

The simultaneous flashing of the 4 battery indicators only most likely corresponds to one of these cases:

Lithium-ion battery protection mode: temperature too high or too low, or voltage out of the tolerated range. Solution: unplug the USB-C cable, wait 10 to 15 minutes at room temperature (18-25°C), then reconnect.
Initialization state during the first charging cycle: may appear for a few minutes at the start of the very first cycle before charging progresses normally.
Battery defect: if the state persists for more than 15 minutes with the certified 5V/2-3A adapter plugged in and the blender does not start, the removable lithium-ion battery may be defective.

Since the battery is removable (accessible with a Phillips screwdriver, reconnecting in order: 3-pin connector first, then 2-pin), a warranty replacement of 2 years is possible with Oster if the problem persists.

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