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Old 03-05-2026, 05:51 AM   #8205
RabidRat
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Seems like this 12V issue is rampant, now with hybrids and EVs taking over.

Somebody should make a product that permanently clips onto the battery terminals and monitors the state of your 12V battery.

Should optionally send you notifications when the drain is faster than usual, forecast how long you have til it's going to be low, and definitely when it's about to die / is dead.

Should also optionally let you attach a battery bank to add capacity (like if you're gonna be away on a trip).

The hardware part of this wouldn't be that hard for me. I guess I wouldn't know anything about the software part - talking to your phone etc.
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