This $200 Lithium Battery Mistake Will FRY Your Vehicle — 90% of Owners Realize Too Late

I dropped a $200 lithium battery into my buddy's RV. Six weeks later his alternator was dead. $840 repair bill. The battery was fine. The panels were fine. The wiring was fine. The problem was how lithium behaves when you connect it directly to your alternator — and nobody warns you about it. In this video I break down exactly why lithium batteries kill alternators, what the BMS voltage spike does to your vehicle electronics, and the one device you need between your alternator and your battery to prevent all of it.