Land Rover battery light came on but car still starts fine, how worried should

My Discovery threw a battery warning light on the dash yesterday but oddly enough the car still starts completely normally with no hesitation or slow cranking whatsoever, which honestly has me confused because I always assumed a battery warning meant the car would show some obvious struggle starting before the light even appeared, does anyone know if this kind of warning can show up before actual starting problems become noticeable, meaning is the light catching something early through voltage monitoring rather than waiting until the battery is weak enough to actually affect performance, or does a light like this sometimes indicate something else entirely unrelated to the battery's actual charge level, like a sensor issue or a connection problem rather than the battery genuinely needing replacement, I don't want to ignore this assuming it's nothing just because the car still starts fine, but I also don't want to rush into replacing something that might still have plenty of life left if this turns out to be a different kind of issue entirely, while trying to figure out my next step I've been searching for somewhere that can help since I need a Land Rover battery in Industrial Area 12 in case this does turn out to require actual replacement rather than just a minor fix, has anyone experienced this specific situation of a warning light appearing while the car still performs normally, and if so did it turn out to be an early accurate warning about genuine battery weakness, or was it something else that got resolved without actually needing a new battery installed, also is there a way to test battery health myself before committing to a replacement, just to get some initial reassurance about whether this is genuinely urgent or something I have a bit more time to properly figure out, so if anyone's dealt with this same confusing situation of a warning light despite normal performance, I'd appreciate hearing what it ended up actually being for you.