Premium Quality --- The voltage sensitive split charge relay is made of solid glass fiber reinforced nylon shell, which is sturdy and durable in use. It is not easy to aging and abrasion resistant, ensures maximum strength and durability for long lasting usage. 140 Amp Dual Battery Smart Isolator --- The dual battery isolator voltage sensitive relay is all you need to charge battery systems. Its dimensions fits heavy duty modular fuse box series (BF43X) and battery switch, which matches mainstream products in market. Great for Dual-Battery Vehicle --- The 140 amp 12v voltage sensitive relay (VSR) split charge relay kit is the best way to ensure you can always get your dual-battery vehicle started. Once your main starter battery is sufficiently charged, it will begin charging the second battery. Easy Installation --- The 12 volt battery isolator with surface or panel mount options, which provides flexibility when installing. No voltage drops comparing to battery isolator diodes (0.6V). Combine / open voltage: DC 13.3V / 12.8V. What You Will Get --- We stand behind all of our items with a 100% product guarantee and promise to give you the best in customer care! If you have any issue about the voltage sensitive split charge relay, please contact us by e-mail, we will try our best to reply you within 24 hours. Product Description .aplus-v2 { display: block; margin-left: auto; margin-right: auto;}.aplus-v2 .aplus-3p-fixed-width { width: 970px;}.aplus-v2 .aplus-3p-fixed-width.aplus-module-wrapper { margin-left: auto; margin-right: auto;} .aplus-tech-spec-hide-loading { visibility: hidden; } .aplus-tech-spec-hide-loading:only-child { visibility: visible !important; } .aplus-tech-spec-hide-loading { visibility: visible !important; } (function(f) {var _np=(window.P._namespace("AplusModule"));if(_np.guardFatal){_np.guardFatal(f)(_np);}else{f(_np);}}(function(P) { P.now('AplusModules-module-16-tech-specs').execute(function(init) { if (init) { return; } P.register('AplusModules-module-16-tech-specs', function() { function showTablesFallback(tables) { // unsuccessful toggling "hide" parent class, fallback to toggling table css directly if (tables && typeof tables.css === 'function') { tables.css('visibility','visible'); } } function showTables(tables, hideLoadingCssClassName) { if (tables && typeof tables.closest === 'function') { var hideTableContainers = tables.closest('.' + hideLoadingCssClassName); if (hideTableContainers.length && typeof hideTableContainers.removeClass === 'function') { hideTableContainers.removeClass(hideLoadingCssClassName); return; // do not go to fallback } } showTablesFallback(tables); } function resizeSpecTables($, tables) { var tableHeights = []; tables.each(function(i, table) { tableHeights.push($(table).height()); }); var maxHeight = Math.max.apply(undefined, tableHeights); tables.height(maxHeight); } return function(moduleId, tableCssClassName, hideLoadingCssClassName) { P.when('A', 'ready').execute(function(A) { var $ = A.$; var targetClassName = '.' + moduleId + ' .' + tableCssClassName; var tables = $(targetClassName); try { resizeSpecTables($, tables); showTables(tables, hideLoadingCssClassName); } catch (e) { // in case resizeSpecTables throws, try to show tables or all hides if (tables && tables.length) { showTablesFallback(tables) } else { // final attempt, show all hidden tables var hideTableContainers = $('.' + (hideLoadingCssClassName || 'aplus-tech-spec-hide-loading')); hideTableContainers.removeClass(hideLoadingCssClassName); } } }); } }); });})); .aplus-v2 .launchpad-module { max-width: 1000px; margin-left: auto; margin-right: auto; padding-top: 15px; padding-bottom: 15px; }.aplus-v2 .launchpad-text-container { margin-left: auto; margin-right: auto; text-align: justify; -moz-text-align-last: center; text-align-last: center; }.aplus-v2 .launchpad-text-center { text-align: center; }.aplus-v2 .launchpad-text-left-justify { text-align: justify; -moz-text-align-last: left; text-align-last: left; }html[dir='rtl'] .aplus-v2 .launchpad-text-left-justify { text-align: justify; -moz-text-align-last: right; text-align-last: right; }.aplus-v2 .launchpad-video-container { width: 100%; }.aplus-v2 .launchpad-modu