this post was submitted on 10 Oct 2024
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Those warnings have been so common in Ukraine drone footage that I suspect it's wrong and a result of mismatched batteries from what the firmware expects and/or added/modified equipment on the drone (like a bomb?) wired into the battery in a way that changes the resistance reading or whatever the battery warning is using to deem it 'low battery'
Sort of like how the "flashlight on" message constantly pops up with drones that drop grenades. They're not turning on a flashlight, the wires that send the voltage to turn on the light have been rewired to a solenoid or something that mechanically releases the grenade. When they push the flashlight button the bomb drops. They just never bothered to mess with the drone firmware to suppress that on screen message about a flashlight.
The betaflight low battery warning is voltage based. It looks like they're using the default "low voltage" and "land now" thresholds which only matter if you don't want to damage the batteries.