{"product_id":"hofeinz-coolschmax-battery-voltmeter-7v-100v-ipx7-waterproof-multi-chemistry-with-adjustable-alarms","title":"HOFEINZ COOLSCHMAX Battery Voltmeter 7V–100V IPX7 Waterproof, Multi‑Chemistry with Adjustable Alarms","description":"\u003cp\u003e\u003cstrong\u003eHOFEINZ COOLSCHMAX is a rugged, IPX7-rated voltage gauge that monitors 7V–100V battery systems with customizable battery profiles and adjustable alarm thresholds.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThis compact voltmeter is built for vehicles, boats, solar setups and industrial equipment that need reliable battery voltage readings across many chemistries. It supports lithium, LiFePO4 and a range of lead-acid types, offers a custom voltage window for nonstandard packs, and keeps settings after power loss — all in a waterproof housing with versatile mounting hardware.\u003c\/p\u003e\n\n\u003ch3\u003eHow does this gauge handle different battery chemistries?\u003c\/h3\u003e\n\u003cp\u003eThe COOLSCHMAX supports multiple preset battery families and lets you define a custom voltage range for unique packs. Choose between lithium (3–22S), LiFePO4 (4–26S), or lead-acid classes (12–84V), or set the 9.5–100V custom mode for special applications. Built-in cell-count detection and manual configuration ensure accurate readings for most common systems.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003ePresets for 3–22S lithium and 4–26S LiFePO4 packs\u003c\/li\u003e\n  \u003cli\u003eLead-acid support: STD, AGM, GEL, EFB up to 84V\u003c\/li\u003e\n  \u003cli\u003eCustom mode: 9.5–100V for nonstandard batteries\u003c\/li\u003e\n  \u003cli\u003eManual full-charge\/discharge thresholds for fine tuning\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWill it survive wet or rough environments?\u003c\/h3\u003e\n\u003cp\u003eYes — the unit is IPX7-rated with a reinforced acrylic front and a detachable waterproof silicone plug protecting internal connections. That design keeps the display and electronics safe from rain, splashes, and brief submersion, making it suitable for marine, outdoor or exposed vehicle installations.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eIPX7 waterproof and dustproof enclosure\u003c\/li\u003e\n  \u003cli\u003eReinforced acrylic waterproof display panel\u003c\/li\u003e\n  \u003cli\u003eSilicone rear plug shields internal circuits\u003c\/li\u003e\n  \u003cli\u003eDurable construction for harsh conditions\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat mounting choices and installation options are available?\u003c\/h3\u003e\n\u003cp\u003eThe COOLSCHMAX comes with flat and angled brackets plus nuts and washers so you can flush-mount, secure with a nut, or bolt it to brackets. No extra hardware is required, and the compact footprint fits panels, control boxes or irregular surfaces with ease.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eFlat and angled mounting brackets included\u003c\/li\u003e\n  \u003cli\u003eSupports flush mount, nut-and-washer, or bracket-and-bolt methods\u003c\/li\u003e\n  \u003cli\u003eHardware supplied: nuts and washers\u003c\/li\u003e\n  \u003cli\u003eFits panels, dash openings and control cabinets\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow does it manage power consumption and alarms?\u003c\/h3\u003e\n\u003cp\u003ePower draw is minimized with normal, low-power and shutdown modes to extend battery life while retaining essential monitoring. The voltmeter includes both undervoltage and overvoltage audible\/visual alarms with user-adjustable thresholds, and it remembers all settings after power loss so you don’t have to reconfigure.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eNormal ≤15mA, low power ≤7.5mA, shutdown ≤1mA\u003c\/li\u003e\n  \u003cli\u003eUndervoltage and overvoltage buzzer plus flashing icon\u003c\/li\u003e\n  \u003cli\u003eAlarm thresholds fully adjustable or disable-able\u003c\/li\u003e\n  \u003cli\u003eAutomatic power-off memory for all user settings\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eIf you need to revert settings, the one-key factory reset instantly restores defaults so the device returns to stable operation. The backlight is user-configurable to stay on or turn off after a timer, letting you balance nighttime visibility with energy savings.\u003c\/p\u003e\n\n\u003cp\u003eWho is this for: The HOFEINZ COOLSCHMAX is designed for technicians, boat owners, RV and camper DIYers, EV hobbyists, solar installers and fleet operators who need a versatile, waterproof voltmeter that supports many battery types and mounting scenarios. It's a practical choice when you require robust monitoring, adjustable alarms and reliable performance in damp or mobile environments.\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 voltage range and battery types does this gauge support?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Supports 7–100V nominal range with presets for 3–22S lithium, 4–26S LiFePO4, and 12–84V lead-acid, plus a 9.5–100V custom mode.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Is the COOLSCHMAX safe for marine or outdoor use?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. It features IPX7 waterproofing, a reinforced acrylic panel and a silicone rear plug for protection in wet environments.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"HOFEINZ","offers":[{"title":"Default Title","offer_id":67593128345785,"sku":"B0H3V89PDZ","price":58.59,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0822\/3765\/3177\/files\/hofeinz-coolschmax-front-panel-display.jpg?v=1790572138","url":"https:\/\/redleafauto.ca\/products\/hofeinz-coolschmax-battery-voltmeter-7v-100v-ipx7-waterproof-multi-chemistry-with-adjustable-alarms","provider":"Redleaf Auto","version":"1.0","type":"link"}