const updateHeaderMetrics = () => { const header = document.getElementById('header'); const rect = header.getBoundingClientRect(); const headerHeight = rect.bottom; document.documentElement.style.setProperty('--header-height', `${headerHeight}px`); }; window.addEventListener('DOMContentLoaded', updateHeaderMetrics); window.addEventListener('resize', updateHeaderMetrics); const header = document.getElementById('header'); const resizeObserver = new ResizeObserver(entries => { for (let entry of entries) { const rect = entry.target.getBoundingClientRect(); const headerHeight = rect.bottom; document.documentElement.style.setProperty('--header-height', `${headerHeight}px`); } }); resizeObserver.observe(header);

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Lead to Lithium Battery Conversion: Upgrade Your Energy Storage with High-Efficiency Lithium Solutions

Boost Performance, Extend Lifespan & Reduce Environmental Impact – Seamless Retrofit for Lead-Acid Systems in Homes, RVs & Industrial Setups

$654.00

$800.00

-$146.00

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12V100AH

12V100AH

12V150AH

12V200AH

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Estimated Delivery：Feb-07 - Feb-11

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SKU: -12V100AH-A0019285

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