--- product_id: 446259565 title: "HULKMAN Sigma 5 Amp All-Around AI Car Battery Charger and Maintainer for 6V/12V Battery with LED Screen Trickle Charger and Desulfator for Lead-Acid and Lithium-ion Battery for Car SUV and More" brand: "hulkman" price: "¥5680" currency: JPY in_stock: false reviews_count: 5 url: https://www.desertcart.jp/products/446259565-hulkman-sigma-5-amp-all-around-ai-car-battery-charger store_origin: JP region: Japan --- # 5 Amp fast charging Clear LED display Supports 6V & 12V batteries HULKMAN Sigma 5 Amp All-Around AI Car Battery Charger and Maintainer for 6V/12V Battery with LED Screen Trickle Charger and Desulfator for Lead-Acid and Lithium-ion Battery for Car SUV and More **Brand:** hulkman **Price:** ¥5680 **Availability:** ❌ Out of Stock ## Summary > ⚡ Power up your ride with smart, sleek charging! ## Quick Answers - **What is this?** HULKMAN Sigma 5 Amp All-Around AI Car Battery Charger and Maintainer for 6V/12V Battery with LED Screen Trickle Charger and Desulfator for Lead-Acid and Lithium-ion Battery for Car SUV and More by hulkman - **How much does it cost?** ¥5680 with free shipping - **Is it available?** Currently out of stock - **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/446259565-hulkman-sigma-5-amp-all-around-ai-car-battery-charger) ## Best For - hulkman enthusiasts ## Why This Product - Trusted hulkman brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Smart AI Charging:** Optimizes battery health with intelligent charging algorithms - • **Compact & Portable:** Sleek design fits easily in your garage or glovebox - • **Desulfator Function:** Revives and maintains battery longevity by removing sulfation - • **Universal Compatibility:** Works seamlessly with lead-acid & lithium-ion batteries for cars, SUVs, and more - • **User-Friendly LED Screen:** Real-time status updates keep you informed at a glance ## Overview The HULKMAN Sigma 5 Amp AI Car Battery Charger is a compact, intelligent charger and maintainer designed for 6V and 12V lead-acid and lithium-ion batteries. Featuring a clear LED screen and desulfator technology, it ensures fast, efficient charging and extends battery life for cars, SUVs, and more. ## Description Product Description Review: 2 Year Review :O) - Review Update: 12/20/2024 Just Ordered Another One! Unfortunately I Can't Find The 9.5 Extension Cable Anywhere! (SOLD OUT) Important: This Item Says It Has A High Return Rate! So After Reading The Negative Reviews People Are Expecting This To Restore Their Dead Batteries? One Guy Says It Won't Hold A Charge! Ya! The Battery Has A Bad Cell And The Battery Needs To Be Replaced! Battery Tenders Tend Good Batteries, They Don't Hold A Charge! Once The Battery Has Reached The End Of Its Life You Need To Replace It! If You Let Your Battery Go Dead And Jump The Battery You Are Killing The Battery And Shortening It's Life Considerably So These Tenders Gently Keep Your Battery TENDED. The CTEK Chargers Work Great Too But This HULKMAN Is The Best And 1/3rd The Cost! I Have 4 Now For Snow blowers, Generators, Cars, Lawn Tractors Etc. Working Awesome for 2 Years! The Only Hulkman Negative Is The AC Side Cable Is Long But The DC Side Is Short So How Could You Mount The Charger To The Wall (BUY THE 9.5ft EXTENSION CABLE) $19.95 But (SOLD OUT) Original Review: This HULKMAN Has Got To be the Best Maintainer Available for the Money! The Quality is Just Superb in Every Way, The Read Out Not Being Just Little Lights and a Full Display is Amazing and Comes With a Great Bracket, Quality Clips ETC. I Bought 4 of The CTEC Units and they have been Great too but More Cash and No Brackets with only little led lights. This Started After All my Delran Tenders began Shorting out & destroying all My Batteries Each Time they Went. The Little Delran JR's Still Work Good and have had no Problems so Delran will be sure to Fix That like they did with all the Plus Units (JUNK) I Would Only Ask That HULKMAN Makes an Adaptor to go from the Delran Connector To The Hulkman Style because I have Tons Of the Extensions From The Delran junk that I can't use and CTEC Makes The Adaptors But Otherwise I would Have Rathered All Hulkman Units For The Quality and DISPLAY and Features. It Even Beeps When You Connect It to Let you know Your Connected AWESOME Stuff at a Great Price. I Just Bought This Second Unit and This Review Is For the One I Got over 1.5 years ago Working Flawlessly. Review: Solid and intuitive charger that works - I also own a Noco Genius 5 charger that I thought was the bomb when it came to battery charging. Until it met the Costco interstate battery in a 2000 Subaru Forester. To be fair the Forester has a phantom leak that I have been too lazy to diagnose (it’s a 25 year old car, so not the daily driver), but the Noco could not maintain a charge on the battery when it was charged, and definitely not when it drained down (because the Noco shut off). I tried all the various settings to the Noco to get it recharged, but no luck. Reading the reviews on the Hulkman, I was skeptical but figured it was worth a try. At first the battery still wouldn’t charge, but after a few goes at the repair function, the Hulkman rescued the battery and still continues to keep it charged, unlike the Noco. Maybe it’s user error, but the Hulkman has me sold. I should also note that using it is much more intuitive than the Noco. Probably user error again, but I really don’t need to refer to the manual for the Hulkman. Highly recommended. ## Features - compact ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B09N79S3WR | | Amperage | 5 Amps | | Battery Charge Time | 4 Hours | | Brand | Hulkman | | Brand Name | Hulkman | | Colour | Black | | Connector Type Used on Cable | plug in | | Current Rating | 2 Amps | | Customer Reviews | 4.6 out of 5 stars 458 Reviews | | Input Voltage | 12 Volts | | Item Dimensions D x W x H | 7.8D x 14W x 4.8H Centimeters | | Item Weight | 856 Grams | | Item Weight Unit of Measure | 856 Grams | | Manufacturer | 1 year warranty | | Manufacturer Part Number | ['Sigma 1', 'Sigma 5', 10'] | | Model Number | Sigma 5 | | Number of Ports | 1 | | Output Voltage | 110 Volts , 12 Volts | | Product Dimensions | 7.8D x 14W x 4.8H Centimeters | | Specification Met | CE | | UPC | 761062119719 | ## Product Details - **Brand:** Hulkman - **Colour:** black - **Product Dimensions:** 7.8D x 14W x 4.8H Centimeters - **Item Weight:** 856 Grams - **Output Voltage:** 110 Volts, 12 Volts ## Images ![HULKMAN Sigma 5 Amp All-Around AI Car Battery Charger and Maintainer for 6V/12V Battery with LED Screen Trickle Charger and Desulfator for Lead-Acid and Lithium-ion Battery for Car SUV and More - Image 1](https://m.media-amazon.com/images/I/71GpRwIUiQL.jpg) ![HULKMAN Sigma 5 Amp All-Around AI Car Battery Charger and Maintainer for 6V/12V Battery with LED Screen Trickle Charger and Desulfator for Lead-Acid and Lithium-ion Battery for Car SUV and More - Image 2](https://m.media-amazon.com/images/I/71MSXoVFhsL.jpg) ![HULKMAN Sigma 5 Amp All-Around AI Car Battery Charger and Maintainer for 6V/12V Battery with LED Screen Trickle Charger and Desulfator for Lead-Acid and Lithium-ion Battery for Car SUV and More - Image 3](https://m.media-amazon.com/images/I/614MxW4Qm9L.jpg) ![HULKMAN Sigma 5 Amp All-Around AI Car Battery Charger and Maintainer for 6V/12V Battery with LED Screen Trickle Charger and Desulfator for Lead-Acid and Lithium-ion Battery for Car SUV and More - Image 4](https://m.media-amazon.com/images/I/71UEYNCgDiL.jpg) ![HULKMAN Sigma 5 Amp All-Around AI Car Battery Charger and Maintainer for 6V/12V Battery with LED Screen Trickle Charger and Desulfator for Lead-Acid and Lithium-ion Battery for Car SUV and More - Image 5](https://m.media-amazon.com/images/I/71V16YHKvlL.jpg) ## Questions & Answers **Q: Can this handle a truck with 2 batteries?** A: If it is a 12V system, then you can use it to charge your battery. If it is a 24V system, then you cannot use it to charge your battery. **Q: Can I replace the 3 amp fuse on the included o-ring cable adapter with a 5 amp fuse?** A: I don't know but using a larger fuse may damage the unit. **Q: Hello, How many hours does a 12 volt car battery need to be fully charged?** A: The number of hours for a 12 volt car battery needs to be fully charged depends on the size of the battery and the level of discharge. A general guideline that I go by is the battery size in Amp Hours (AH) and divide by the Amp rating of the charger, so I figure a 60 AH battery might need 12 hours (60AH / 5A). Ambient temperature, age of battery and chemistry type of the battery can also have an influence on the amount of time to reach a full charge. **Q: Can this be used as an onboard battery maintainer** A: Thank you for your interest in HULKMAN! The compatibility of our car battery trickle charger depends on the battery capacity, which should fall within the range of 15Ah to 120Ah. ## Customer Reviews ### ⭐⭐⭐⭐⭐ 2 Year Review :O) *by A***R on 8 October 2023* Review Update: 12/20/2024 Just Ordered Another One! Unfortunately I Can't Find The 9.5 Extension Cable Anywhere! (SOLD OUT) Important: This Item Says It Has A High Return Rate! So After Reading The Negative Reviews People Are Expecting This To Restore Their Dead Batteries? One Guy Says It Won't Hold A Charge! Ya! The Battery Has A Bad Cell And The Battery Needs To Be Replaced! Battery Tenders Tend Good Batteries, They Don't Hold A Charge! Once The Battery Has Reached The End Of Its Life You Need To Replace It! If You Let Your Battery Go Dead And Jump The Battery You Are Killing The Battery And Shortening It's Life Considerably So These Tenders Gently Keep Your Battery TENDED. The CTEK Chargers Work Great Too But This HULKMAN Is The Best And 1/3rd The Cost! I Have 4 Now For Snow blowers, Generators, Cars, Lawn Tractors Etc. Working Awesome for 2 Years! The Only Hulkman Negative Is The AC Side Cable Is Long But The DC Side Is Short So How Could You Mount The Charger To The Wall (BUY THE 9.5ft EXTENSION CABLE) $19.95 But (SOLD OUT) Original Review: This HULKMAN Has Got To be the Best Maintainer Available for the Money! The Quality is Just Superb in Every Way, The Read Out Not Being Just Little Lights and a Full Display is Amazing and Comes With a Great Bracket, Quality Clips ETC. I Bought 4 of The CTEC Units and they have been Great too but More Cash and No Brackets with only little led lights. This Started After All my Delran Tenders began Shorting out & destroying all My Batteries Each Time they Went. The Little Delran JR's Still Work Good and have had no Problems so Delran will be sure to Fix That like they did with all the Plus Units (JUNK) I Would Only Ask That HULKMAN Makes an Adaptor to go from the Delran Connector To The Hulkman Style because I have Tons Of the Extensions From The Delran junk that I can't use and CTEC Makes The Adaptors But Otherwise I would Have Rathered All Hulkman Units For The Quality and DISPLAY and Features. It Even Beeps When You Connect It to Let you know Your Connected AWESOME Stuff at a Great Price. I Just Bought This Second Unit and This Review Is For the One I Got over 1.5 years ago Working Flawlessly. ### ⭐⭐⭐⭐⭐ Solid and intuitive charger that works *by E***E on 23 March 2025* I also own a Noco Genius 5 charger that I thought was the bomb when it came to battery charging. Until it met the Costco interstate battery in a 2000 Subaru Forester. To be fair the Forester has a phantom leak that I have been too lazy to diagnose (it’s a 25 year old car, so not the daily driver), but the Noco could not maintain a charge on the battery when it was charged, and definitely not when it drained down (because the Noco shut off). I tried all the various settings to the Noco to get it recharged, but no luck. Reading the reviews on the Hulkman, I was skeptical but figured it was worth a try. At first the battery still wouldn’t charge, but after a few goes at the repair function, the Hulkman rescued the battery and still continues to keep it charged, unlike the Noco. Maybe it’s user error, but the Hulkman has me sold. I should also note that using it is much more intuitive than the Noco. Probably user error again, but I really don’t need to refer to the manual for the Hulkman. Highly recommended. ### ⭐⭐⭐⭐⭐ As Advertised = Good Product *by M***N on 1 December 2022* Received the Hulkman Sigma 5 today. First impressions - Well Packaged. After you register the charger on the Hulkman website you get an extra year added on the 2 year warranty ! Good Quality housing and cords. Hulkman is using 14 awg wire with good solid insulation. My Ctek 7002 uses 18 awg wire for the load side going to the car battery. The Sigma is all automatic. You don't have to remember the stages of the charging cycles or what each charging cycle means in the charging process. If you have the sigma 5 mounted under the hood and just want to plug in the ac to the charger with the power cord exposed from the front of the vehicle, it remembers what charging program you used before and automatically starts it's charge cycle per it's own algorithms. There is no manual intervention needed after plugging the charger into AC. It's truly a connect and forget charger. My Ctek 7002 has the same capability. My Ctek 7002 is a great charger. The sigma 5 is trailing right behind the Ctek 7002. The Ctek 7002 is $129.99 and 7 amps. The Hulkman is 5 amps and was on sale for $47.00 and now its back up to $69.99 and it comes with a good copper clamps set and an eyelet connector set just like Ctek 7002. The Sigma 5 directions are simple and straight forward. It also came with a wall bracket and screws. Ctek 7002 did not come with a mounting bracket The Hulkman does not show the actual stages of the charge cycle like the Ctek 7002. The Sigma 5 has an icon of a battery with indicators stating how full the battery is while charging. The Sigma 5 has a large display of the actual Battery voltage which I like. I have not used the recondition cycle yet so I will update this review after I do so. I recommend this charger for the batteries it will accommodate as stated in the description on Amazon. ## Frequently Bought Together - Hulkman Sigma 5, 5A Car Battery Trickle Charger, 12V and 6V Smart Charger, LiFePO4 and Lead-Acid Battery Automotive Maintainer with 3.2-in LED Display for Automobile, Motorcycle, ATV - Hulkman Oeream Alpha Bag, EVA Protective Case for Alpha 85, Alpha 85S Jump Starter, black, Sporty - Hulkman SigmaE01 9.2-Feet (2.8 Meters) Extension Cable for Sigma 1/ Sigma 5 Battery Charger --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.jp/products/446259565-hulkman-sigma-5-amp-all-around-ai-car-battery-charger](https://www.desertcart.jp/products/446259565-hulkman-sigma-5-amp-all-around-ai-car-battery-charger) --- *Product available on Desertcart Japan* *Store origin: JP* *Last updated: 2026-09-06*