{"product_id":"battery-hydrometer-electrolyte-acid-density-tester-1-10-1-31","title":"Battery Hydrometer 1.10–1.30 | Electrolyte Acid Density Tester","description":"\n\u003ch2\u003eAccurately Test Your Car Battery's Electrolyte Density\u003c\/h2\u003e\n\u003cp\u003eKeep your lead-acid battery in peak condition with this professional \u003cstrong\u003eBattery Hydrometer\u003c\/strong\u003e. Designed for measuring the specific gravity (density) of electrolyte fluid in flooded lead-acid batteries, this simple tool helps you determine whether your battery is fully charged, needs charging, or is failing — before you're left stranded.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePrecise Measurement Range:\u003c\/strong\u003e Reads electrolyte density from \u003cstrong\u003e1.10 to 1.30 SG\u003c\/strong\u003e — covering the full range of typical lead-acid battery states.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHigh-Quality Glass + Rubber Construction:\u003c\/strong\u003e Durable glass barrel with a rubber bulb for easy suction, making readings clear and reliable every time.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompact \u0026amp; Lightweight:\u003c\/strong\u003e At approximately 275mm (10.8 inches) total length, it's easy to store in a toolbox or glove compartment.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSimple to Use:\u003c\/strong\u003e No batteries or electronics needed — just insert vertically into the battery cell, squeeze and release the bulb to draw in fluid, and read the float level directly.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUniversal Compatibility:\u003c\/strong\u003e Suitable for standard flooded lead-acid batteries in cars, trucks, motorcycles, boats, and more.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMaterial\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eGlass + Rubber\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMeasurement Range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1.10 – 1.30 SG\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTotal Length\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eApprox. 275mm \/ 10.8 in\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eType\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eAnalog Float Hydrometer\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCompatible Batteries\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eFlooded Lead-Acid (car, truck, marine, motorcycle)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCountry of Origin\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMade in China\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eWhat's in the Box?\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1 × Battery Hydrometer\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003ePro Tip\u003c\/h3\u003e\n\u003cp\u003eA fully charged lead-acid battery should have an electrolyte density of approximately \u003cstrong\u003e1.27 SG\u003c\/strong\u003e. Readings consistently below \u003cstrong\u003e1.20\u003c\/strong\u003e may indicate that your battery needs charging or replacement. Regular testing is one of the easiest ways to extend battery life and avoid unexpected breakdowns.\u003c\/p\u003e\n\n\u003cp\u003eFor more information on battery safety and proper maintenance practices, visit the U.S. Consumer Product Safety Commission (CPSC) Battery Safety Resource.\u003c\/p\u003e\n\n\u003ch3\u003eRelated Products You May Like\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/1-channel-scr-solid-state-relay-switch-module-dc3-24v-40a-optocoupler\"\u003e1-Channel SCR Solid State Relay Module DC3-24V 40A Optocoupler\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/10-pack-22awg-glass-tube-fuse-holder-5x20mm-6x30mm-screw-type-10-pack\"\u003e10-Pack 22AWG Glass Tube Fuse Holder 5×20mm \u0026amp; 6×30mm Screw\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eLearn more: \u003ca href=\"https:\/\/en.wikipedia.org\/wiki\/Hybrid_vehicle_drivetrain\" target=\"_blank\" rel=\"noopener\"\u003eHybrid vehicle drivetrain\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: What is a battery hydrometer used for?\u003c\/h4\u003e\n\u003cp\u003eA: A battery hydrometer is used to measure the specific gravity (electrolyte density) of the fluid inside a flooded lead-acid battery. This reading tells you the battery's state of charge — a density around 1.27 SG indicates a fully charged battery, while lower readings suggest it needs charging or may be failing.\u003c\/p\u003e\n\n\u003ch4\u003eQ: What types of batteries is this hydrometer compatible with?\u003c\/h4\u003e\n\u003cp\u003eA: This hydrometer is designed specifically for \u003cstrong\u003eflooded (wet cell) lead-acid batteries\u003c\/strong\u003e, commonly found in cars, trucks, motorcycles, marine vessels, and lawnmowers. It is NOT suitable for sealed AGM, gel, or lithium batteries, as those types do not use liquid electrolyte that can be accessed for testing.\u003c\/p\u003e\n\n\u003ch4\u003eQ: How do I use this battery electrolyte density tester?\u003c\/h4\u003e\n\u003cp\u003eA: Remove the battery cell cap to expose the electrolyte fluid. Insert the hydrometer tube into the cell, squeeze the rubber bulb, then slowly release it to draw a sample of electrolyte into the glass barrel. Hold the hydrometer vertically and read the float scale at eye level. The number the float rests at indicates the specific gravity (density) of the electrolyte. Rinse the hydrometer thoroughly with water after each use.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Is this hydrometer safe to use?\u003c\/h4\u003e\n\u003cp\u003eA: Battery electrolyte is a dilute sulfuric acid solution and can be corrosive. Always wear protective gloves and safety glasses when testing battery fluid, avoid contact with skin and eyes, and keep the hydrometer away from children. Handle with care and wash hands thoroughly after use.\u003c\/p\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What is a battery hydrometer used for?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"A battery hydrometer is used to measure the specific gravity (electrolyte density) of the fluid inside a flooded lead-acid battery. This reading tells you the battery's state of charge — a density around 1.27 SG indicates a fully charged battery, while lower readings suggest it needs charging or may be failing.\"}}, {\"@type\": \"Question\", \"name\": \"What types of batteries is this hydrometer compatible with?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"This hydrometer is designed specifically for flooded (wet cell) lead-acid batteries, commonly found in cars, trucks, motorcycles, marine vessels, and lawnmowers. It is NOT suitable for sealed AGM, gel, or lithium batteries, as those types do not use liquid electrolyte that can be accessed for testing.\"}}, {\"@type\": \"Question\", \"name\": \"How do I use this battery electrolyte density tester?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Remove the battery cell cap to expose the electrolyte fluid. Insert the hydrometer tube into the cell, squeeze the rubber bulb, then slowly release it to draw a sample of electrolyte into the glass barrel. Hold the hydrometer vertically and read the float scale at eye level. The number the float rests at indicates the specific gravity (density) of the electrolyte. Rinse the hydrometer thoroughly with water after each use.\"}}, {\"@type\": \"Question\", \"name\": \"Is this hydrometer safe to use?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Battery electrolyte is a dilute sulfuric acid solution and can be corrosive. Always wear protective gloves and safety glasses when testing battery fluid, avoid contact with skin and eyes, and keep the hydrometer away from children. Handle with care and wash hands thoroughly after use.\"}}]}\u003c\/script\u003e","brand":"Oasis Select","offers":[{"title":"Blue","offer_id":47718177046633,"sku":"14:173#Blue","price":9.89,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0679\/7931\/3257\/files\/Sd4c2694278ec4ce7b7946947ad8b290bQ_870c3ca3-5c66-499f-9101-9756bbce9f81.webp?v=1782266548","url":"https:\/\/oasis-select.com\/products\/battery-hydrometer-electrolyte-acid-density-tester-1-10-1-31","provider":"Oasis Select","version":"1.0","type":"link"}