{"product_id":"callsun-40w-12v-solar-trickle-charger-2-pack-20w-battery-maintainers-with-smart-controller","title":"Callsun 40W 12V Solar Trickle Charger – 2-Pack 20W Battery Maintainers with Smart Controller","description":"\u003cp\u003eMeet Callsun 40W 12V Solar Trickle Charger, a practical, no-hassle solution for keeping 12V batteries topped off when you’re parked, stored, or off-grid. This kit pairs two compact solar panels with a smart controller to deliver steady, automatic charging across a range of environments. The result is a dependable companion for vehicles, boats, RVs, and seasonal equipment, designed to reduce battery drain while you focus on the journey ahead.\u003c\/p\u003e\n\u003ch2\u003eEfficient Battery Charging\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eOur 20W 12V solar charger uses A+ grade monocrystalline cells, low-iron tempered glass, and a built-in smart controller to maximize module efficiency, helping batteries replenish power more quickly on sunny days.\u003c\/li\u003e\n  \u003cli\u003eExpect steady current delivery with a well-tuned balance between fast fill and gentle maintenance, so your battery remains ready without constant supervision.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWide 12V Compatibility\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003ePlug-and-play alligator clips and O-rings simplify hookup, making it suitable for a wide range of 12V battery chemistries including LiFePO4, Li-ion, AGM, SLA, GEL, MF and more.\u003c\/li\u003e\n  \u003cli\u003eWhether you’re topping off a car, RV, boat, motorcycle, camper, lawn mower, trailer, or water pump, this smart charger helps prevent battery drain during storage.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e3-Stage Visible Charging\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eA built-in intelligent chip automatically switches from Bulk to Absorption to Maintenance, providing fast initial charging and then long-term upkeep without babysitting.\u003c\/li\u003e\n  \u003cli\u003eThree status LEDs give at-a-glance visibility of the charging stage, helping you monitor without disconnecting or testing the system.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eAll-Weather Durability\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eFull-potting and IP68 sealing safeguard electronics against moisture, while a sturdy low-iron tempered glass panel and corrosion-resistant aluminum frame stand up to outdoor use.\u003c\/li\u003e\n  \u003cli\u003eDesigned for operation from 14°F to 158°F (-10°C to 70°C), with corner guards to absorb bumps and extend the product’s life, up to an estimated 25 years in the field.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eComplete Kit \u0026amp; 24\/7 Support\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eWhat’s in the box: two solar panels, two smart controllers, two 360° adjustable mounts, two alligator clip cables, two O-rings, and a mounting hardware kit—easy to install in minutes.\u003c\/li\u003e\n  \u003cli\u003eThe setup includes a 24\/7 support channel and a 365-day warranty for peace of mind as you plan trips or seasonal storage.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eReal-world use cases include keeping a parked RV battery healthy during off-season, maintaining a boat battery after daily excursions, or topping off a trailer battery between trips. By providing a reliable source of maintenance power, this Callsun kit helps you stay prepared without overhauling your routine. While outcomes can vary with sun exposure and battery type, the system is designed to offer a practical, low-maintenance approach to battery care.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: What batteries are compatible with the Callsun solar charger?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Compatible with LiFePO4, Li-ion, AGM, SLA, GEL, MF and related 12V batteries; supports automatic maintenance mode.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: How does the 3-stage charging work?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: The charger transitions from Bulk to Absorption to Maintenance, with LED indicators to show the current stage at a glance.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Callsun","offers":[{"title":"Default Title","offer_id":43996572057734,"sku":"B0DZBZ1W8H","price":81.07,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0665\/1602\/5478\/files\/callsun-40w-12v-solar-trickle-charger-panel-front-view.jpg?v=1779164412","url":"https:\/\/patiozora.com\/products\/callsun-40w-12v-solar-trickle-charger-2-pack-20w-battery-maintainers-with-smart-controller","provider":"PatioZora","version":"1.0","type":"link"}