{"product_id":"tk15-battery-capacity-tester-coulometer-voltmeter-dc-8-80v","title":"TK15 Battery Capacity Tester Coulometer DC 8–80V | Voltmeter","description":"\n\u003ch2\u003eTK15 Professional Precision Battery Capacity Tester \u0026amp; Voltmeter\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eTK15 Battery Capacity Tester (Coulometer)\u003c\/strong\u003e is a high-precision instrument designed to monitor the voltage, current, and remaining capacity of your battery pack in real time. Whether you're managing an e-bike battery, a balance car, a portable UPS, or a cleaning machine, the TK15 gives you instant, accurate visibility into your battery's state — so you're never caught off guard.\u003c\/p\u003e\n\n\u003cp\u003eCompatible with \u003cstrong\u003elithium, lithium iron phosphate (LiFePO4), lead-acid, and nickel-metal hydride (NiMH)\u003c\/strong\u003e batteries operating between \u003cstrong\u003eDC 8V and 80V\u003c\/strong\u003e, this coulometer is the ideal solution for DIY builders, technicians, and everyday users who need reliable battery data.\u003c\/p\u003e\n\n\u003cp\u003e\u003cem\u003eMade in Mainland China.\u003c\/em\u003e\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHigh-Precision Measurement:\u003c\/strong\u003e ±1.0% voltage and current acquisition accuracy for dependable readings every time.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMulti-Chemistry Compatible:\u003c\/strong\u003e Works with lithium, LiFePO4, lead-acid, and NiMH battery packs (DC 8–80V operating range).\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAutomatic Memory:\u003c\/strong\u003e Retains capacity data when power is disconnected — no need to reconfigure after a restart.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAdjustable Thresholds:\u003c\/strong\u003e Customise empty and full voltage levels to match your specific battery pack.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAuto-Backlight:\u003c\/strong\u003e Display illuminates automatically when in use; powers down to conserve energy during standby.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUltra-Low Power Draw:\u003c\/strong\u003e Only 8.0 mA operating consumption; drops to 0.5 mA on standby and just 50 µA in sleep mode.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWide Current Support:\u003c\/strong\u003e Compatible with 50A, 100A, and 350A shunt configurations.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFast Response Rate:\u003c\/strong\u003e Captures rapid changes in battery state for accurate real-time display.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat the Display Shows\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eResidual battery capacity (Ah or mAh)\u003c\/li\u003e\n  \u003cli\u003eCapacity percentage with totem-pole bar graph\u003c\/li\u003e\n  \u003cli\u003eBattery voltage (DC)\u003c\/li\u003e\n  \u003cli\u003eBattery current\u003c\/li\u003e\n  \u003cli\u003ePower output\u003c\/li\u003e\n  \u003cli\u003eEstimated remaining charge \/ discharge time\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eModel\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eTK15\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOperating Voltage Range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eDC 8–80V\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSupported Current\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e50A \/ 100A \/ 350A\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eVoltage Accuracy\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e±1.0%\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCurrent Accuracy\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e±1.0%\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOverall Dimensions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e66 × 40 × 10 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDisplay Area\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e32 × 23 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBattery Capacity Setting Range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0–590 Ah\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOperating Temperature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0–35°C\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWorking Power Consumption\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e8.0 mA (Max 10.0 mA)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eStandby Consumption\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0.5 mA (Max 0.8 mA)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSleep Consumption\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e50 µA (Max 60 µA)\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\u003eMainland 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 × TK15 Battery Capacity Tester \/ Coulometer\u003c\/li\u003e\n  \u003cli\u003e1 × 1 m Shielded Cable\u003c\/li\u003e\n  \u003cli\u003e1 × Current Shunt\u003c\/li\u003e\n  \u003cli\u003e1 × User Manual\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eCompatible Applications\u003c\/h3\u003e\n\u003cp\u003eE-bikes, balance scooters, portable cleaning machines, UPS systems, instruments, and any mobile or portable equipment powered by a supported battery chemistry.\u003c\/p\u003e\n\n\u003ch3\u003eRelated Products You May Like\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/25-in-1-precision-magnetic-screwdriver-set-pro-repair-tool-kit\"\u003e25-in-1 Precision Magnetic Screwdriver Set | Pro Repair Kit\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/34-compartment-double-sided-hardware-storage-box-removable-dividers\"\u003e34-Compartment Double-Sided Hardware Storage Box \u0026amp; Dividers\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/waterproof-cable-gland-set-pg7-pg9-nylon-connectors-10-pack\"\u003e10-Pack Waterproof Cable Glands PG7 PG9 Nylon Connectors\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eLearn more: \u003ca href=\"https:\/\/www.energystar.gov\/products\" target=\"_blank\" rel=\"noopener\"\u003eENERGY STAR product efficiency guidance\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: What battery types is the TK15 coulometer compatible with?\u003c\/h4\u003e\n\u003cp\u003eA: The TK15 battery capacity tester works with lithium-ion, lithium iron phosphate (LiFePO4), lead-acid, and nickel-metal hydride (NiMH) battery packs, provided their operating voltage falls within the DC 8–80V range.\u003c\/p\u003e\n\u003ch4\u003eQ: Will the TK15 lose its data if the battery is disconnected?\u003c\/h4\u003e\n\u003cp\u003eA: No. The TK15 features an automatic memory function that retains the last recorded capacity data even after a power interruption, so it resumes accurately when reconnected without needing to be reset.\u003c\/p\u003e\n\u003ch4\u003eQ: What current ratings does the TK15 support?\u003c\/h4\u003e\n\u003cp\u003eA: The TK15 supports 50A, 100A, and 350A configurations depending on which shunt (sampler) is used. The included standard shunt supports up to 50A continuous (100A max), while larger external shunts unlock higher current ranges.\u003c\/p\u003e\n\u003ch4\u003eQ: Is the TK15 suitable for e-bike battery monitoring?\u003c\/h4\u003e\n\u003cp\u003eA: Yes. The TK15 is an excellent choice for e-bike battery monitoring. It displays real-time voltage, current, remaining capacity (Ah\/mAh), capacity percentage, and estimated ride time remaining — all essential data for e-bike users and builders.\u003c\/p\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What battery types is the TK15 coulometer compatible with?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The TK15 battery capacity tester works with lithium-ion, lithium iron phosphate (LiFePO4), lead-acid, and nickel-metal hydride (NiMH) battery packs, provided their operating voltage falls within the DC 8–80V range.\"}}, {\"@type\": \"Question\", \"name\": \"Will the TK15 lose its data if the battery is disconnected?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"No. The TK15 features an automatic memory function that retains the last recorded capacity data even after a power interruption, so it resumes accurately when reconnected without needing to be reset.\"}}, {\"@type\": \"Question\", \"name\": \"What current ratings does the TK15 support?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The TK15 supports 50A, 100A, and 350A configurations depending on which shunt (sampler) is used. The included standard shunt supports up to 50A continuous (100A max), while larger external shunts unlock higher current ranges.\"}}, {\"@type\": \"Question\", \"name\": \"Is the TK15 suitable for e-bike battery monitoring?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes. The TK15 is an excellent choice for e-bike battery monitoring. It displays real-time voltage, current, remaining capacity (Ah\/mAh), capacity percentage, and estimated ride time remaining — all essential data for e-bike users and builders.\"}}]}\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"BreadcrumbList\", \"itemListElement\": [{\"@type\": \"ListItem\", \"position\": 1, \"name\": \"Home\", \"item\": \"https:\/\/sdf9i0-k1.myshopify.com\/\"}, {\"@type\": \"ListItem\", \"position\": 2, \"name\": \"Measuring \u0026 Testing\", \"item\": \"https:\/\/sdf9i0-k1.myshopify.com\/collections\/measuring-testing\"}, {\"@type\": \"ListItem\", \"position\": 3, \"name\": \"TK15 Battery Capacity Tester Coulometer DC 8–80V | Voltmeter\", \"item\": \"https:\/\/sdf9i0-k1.myshopify.com\/products\/tk15-battery-capacity-tester-coulometer-voltmeter-dc-8-80v\"}]}\u003c\/script\u003e","brand":"QXL","offers":[{"title":"8-120V 350A(0-500A)","offer_id":46926070218951,"sku":"14:366#8-120V 350A(0-500A)","price":242.14,"currency_code":"USD","in_stock":true},{"title":"8-120V 50A(0-75A)","offer_id":46926070251719,"sku":"14:175#8-120V 50A(0-75A)","price":132.92,"currency_code":"USD","in_stock":true},{"title":"8-120V 100A(0-150A)","offer_id":46926070284487,"sku":"14:193#8-120V 100A(0-150A)","price":175.85,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0799\/8314\/9255\/files\/S29f284206b9c4a10960a8c080ebfbcc1e.webp?v=1785470308","url":"https:\/\/qxlcustomerservice.com\/products\/tk15-battery-capacity-tester-coulometer-voltmeter-dc-8-80v","provider":"QXL","version":"1.0","type":"link"}