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The NOCO GENIUS1 is a 1-amp smart charger, maintainer and desulfator for 6V and 12V lead-acid batteries and 12V lithium (LiFePO4). It is sized for batteries up to 30 amp-hours, so it suits motorcycles, ATVs, lawn equipment, jet skis and small car batteries rather than large starting batteries. It is fully automatic, spark-proof and reverse-polarity protected, with an IP60 weatherproof housing and a force mode for deeply drained batteries. At $29.95 at Best Buy as of November 5, 2026, it sits at the low end of its recent range.
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Availability unknownSold by cllwil-16 (99.5% positive, 2,100 ratings)Returns: Set by the eBay seller; the eBay Money Back Guarantee covers an item that doesn't arrive or isn't as described.
Availability unknownSold by officialnoco (99.9% positive, 14,300 ratings)Returns: Set by the eBay seller; the eBay Money Back Guarantee covers an item that doesn't arrive or isn't as described.
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Lowest price we've seen: $29.95 on Nov 6 at Amazon. Tracked across 5 stores since Nov 6.
Owners rate it well overall, with 4.3 out of 5 from 704 ratings. Most praise its small size, simple automatic operation and ability to bring back batteries that sat drained. The main complaints are the slow 1-amp charge rate and the limited LED status display.
Meet the NOCO GENIUS1, one of our most powerful, highest-performing, energy-efficient, and compact portable universal battery chargers yet. The GENIUS1 is a 1-amp (15-watt) - 100-240VAC 50-60Hz - 6-volt and 12-volt heavy-duty battery charger, battery maintainer, trickle charger, float charger, and battery desulfator for up to 30 amp-hours. It's designed to charge and maintain all types of sealed lead-acid and lithium-ion (lifepo4) batteries, including flooded, gel, maintenance-free, AGM, SLA, VRLA, as well as automotive, marine, RV, powersports, and deep-cycle batteries. Its advanced battery repair regenerator mode uses slow pulse reconditioner technology to automatically detect battery sulfation and acid stratification, restoring lost battery performance for extended battery life. It can be used and stored almost anywhere - home, garage, mobile, bench, or in car - to charge and maintain any battery - even plug in through your vehicle's 12V auxiliary cigarette lighter port. Its next-generation charging regime utilizes fast charging microprocessor technology to rapidly recharge batteries without any manual intervention. It's a completely automatic, worry-free, professional, and commercial-grade intelligent battery charger with zero overcharge. Designed to be dual purpose - both indoors and outdoors - providing weatherproof and waterproof protection from the outside elements during any time of the year, including winter. Its X-Connect battery connectors - better than SAE - allow for quick-connect permanent connection or connecting directly to the battery terminals. A digital display provides the charging status and tests diagnostics for multiple conditions such as a dead battery, bad battery, reverse polarity, and more.
