YONHAN Battery Charger 10-Amp 12V and 24V Fully-Automatic Smart Car Battery Charger, Battery Maintainer Trickle Charger, and Battery Desulfator with Temperature Compensation
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Availability:
In Stock.
Arrives
Monday, Mar 23
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Features
- [All in One, Keep your battery charged and your car ready to go] This compact yet powerful 10-Amp 12V/24V smart battery charger is a versatile all-in-one solution, functioning as a charger, maintainer, trickle charger, and desulfator. It works with all 12V and 24V lead-acid batteries, including AGM, GEL, SLA, and Flooded types, for vehicles like cars, trucks, SUVs, motorcycles, lawnmowers, and boats. Note: For 12V/24V automotive or motorcycle batteries only. Not suitable for RC LiPo batteries or laboratory use.
- [Your Ultimate Winter Car Battery Companion] This smart car battery trickle charger has winter and summer modes to adjust charging based on temperature, preventing battery drain. It includes safety features like reverse polarity protection, overcharge protection, and short circuit prevention, ensuring safe and reliable charging. Perfect for keeping your car battery charged during cold winters or long breaks.
- [Enjoy Precision Charging, Your car deserves the best] This automotive battery charger has a backlit LCD that shows voltage, current, power percentage, temperature, and mode settings, making it easy to check your battery's health. It includes a thermal sensor to adjust charging, preventing overcharging in heat and undercharging in cold. The charger remembers your last mode and defaults to it after a power outage.
- [Restore your Battery, Don't let a dead battery ruin your plans] This battery charger includes an advanced repair mode to revive old or idle batteries and extend their lifespan. Use repair mode if the battery won't charge normally. Its high and low-frequency pulse technology helps restore and activate batteries, but it won't work on completely dead, damaged, or lithium batteries. Input line length:90cm, Output line length:65cm
- Note: 1. Our product is a car battery charger that requires connection to a power outlet for operation. 2. Regarding the power plug not making contact, this could be due to dirty battery terminals, loose clamps, or size mismatch. Please clean the terminals and ensure a firm connection. 3. This car battery charger cannot charge batteries voltage below 0.3V or batteries that are already damaged. 4. Always check your battery's voltage before attempting to charge. 5. If the battery indicator icon on the charger's display is flashing empty, this indicates that no battery has been detected, and charging will not be possible.
- [Trickle charge mode switch] If you want to trickle charge your battery, you can switch to motorcycle mode after the battery is fully charged. This mode is compatible with the voltage monitoring mode, which keeps the battery voltage at least 12V at all times, keep batteries stay charged for a long time.
Brand: YONHAN
Color: Red 10A
Product Dimensions: 2.4"D x 6.2"W x 3.7"H
Item Weight: 1.3 Pounds
Output Voltage: 12 Volts (DC)
Product Dimensions: 2.4 x 6.2 x 3.7 inches
Item Weight: 1.34 pounds
Item model number: RJ-C121001A
Date First Available: June 17, 2021
Manufacturer: YONHAN
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Monday, Mar 23
Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Top Amazon Reviews
This is a nice little charger, great for the price. This is simple to use, works well and afordabe. The wires are a little cheap, but for what it is, its great. I have it connected to a 12v lead acid that runs my well pump (6a 12v) and it works great. I connected it and have to do nothing now. Great purchase!
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Reviewed in the United States on January 20, 2026 by Gregory
This worked so well I had to come write a review. It charges really fast. Love that it displays your battery percentage as well. Went from 40% to 100 in about an hour and a half. Most other 10 amp chargers were $60 to $100. This thing's an amazing value
Reviewed in the United States on February 10, 2026 by Jnice
I have purchased several of these chargers so that I can basically leave them as trickle chargers on a couple of my vehicle batteries. They are quick and easy to connect properly and do a very good job of bring your batteries up to their full potential. Understand that you cannot charge a completely dead battery. There must at least a small amount of juice left in the battery for the charger to start its programming. It's been about a year and a half since I bought my first one of these. It has continued to function very well so I'd say the quality and dependability are great with these chargers. So I recommend them if you want a quick and easy to use charger for your vehicle batteries.
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Reviewed in the United States on January 21, 2026 by Old Wrench
Much smaller and lighter weight than I was expecting. The charging system is fully automatic which is nice. I only wish that both the battery cables and the plug in cord were longer so I wouldn’t have to use an extension cord every time.
Reviewed in the United States on January 29, 2026 by Patrick Peterson
It's working good, I used it for hybrid car battery ( not the big cell one) it takes 24h for fixing and recharging it's working fine now.
Reviewed in the United States on March 13, 2026 by Amazon Customer
I had a vehicle sitting for a few months and when I went to unlock and start it I couldn't even open the doors due to a completely dead battery. I was able to use my key to get it open and tried jumpers to get it going but wasn't able to turn over. I then went in search of a charger that could recharge my battery and get my car back on the road. In the searching process, I learned that chargers will not charge a completely dead battery and that it's best to find one that had a "repair" function. After finding a few and carefully sifting thru feedbacks I decided on this unit. Mostly because of the versatility of battery types but also for the "repair" feature. I received the unit the next day and decided to try to charge the battery first. It immediately showed full and shut off. I knew this wasn't the case and figured it was because of the completely dead battery so I flipped it to "repair and let it run about 18 hours til it showed done. I then switched it to charge and it was showing about 60% charge so I left it to charge for a few hours. Once it showed done, I left it on charge and let it go this time for just under 2 hours til it showed done. I put it back in the car the next day and it started right up. I let it run a bit and shut it down. I started it again the next day and same result. Started right up. Needless to say I am very happy with the results this product achieved. The price was very affordable. This was done on a 12 volt "flooded" or "wet" type battery in very cold winter weather (teens) over 3 days. Make sure you are positive what type of battery you have or you may not achieve expected results. Definitely recommend!
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Reviewed in the United States on December 15, 2025 by Ima Rascal
This thing is awesome I saw the smoking video and went a head and got it anyways. I had two motorcycles batteries that would not hold a charge now they do. I had a dead truck battery would not hold a charge. Yep NOW THEY DO . It does take more time to charge than my old 100.00 one but I am okay with that . Price is great the product does work great . It CAME ON TIME YEP .
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Reviewed in the United States on February 10, 2026 by Tony Tony
My 6-year-old Audi Q5 can start OK, because it has a strong starter (has auto start/off) but because of it's low state of charge, that function no longer works. I bought a trickle charger before this one which charged well on a 2019 Corolla that's being driven very little and infrequent but not on my 2018 Audi Q5. That other trickle charger charged my battery from 11.7 to 11.9V. I bought this charger due to it has a separate mode for AGM and Repair because my Audi battery is AGM. FYI, manual says you need to wait at least an hour from the last usage of your battery. So, I first charged it in the AGM mode and the display went from 50% to 100% in only 10 minutes but the voltage only improved to 12V. Yesterday I put it on repair mode, and it took 8 hours to show full. I did not wait for it to turn off by itself. The battery now has improved from 12V to 12.55V; from 50% to 80% capacity on a 6-year-old large AGM battery. I did not bother to remove the power cords due to my bad back and the battery is situated in the trunk all the way behind the backseat. Luckily it does not appear to cause any damage to my car. During the repair mode, I monitored the battery temperature with my laser thermometer; the charger nor the battery did not get warm and stayed in the low 70's. PROS: 1) Has separate AGM and Motorcycle and repair mode. 2) Great LCD lighted display will show the battery level when you hook it up even before you plug in the power cord. It will also show charger temperature, charging current & status, battery voltage & etc. 3) Smart charger has a built-in fan to stay cool and it will alter the charging power with respect to the battery status. It will start out slow and rarely goes to the full 10A, then it will decrease the power when you reached half full then even lower at 75%. Even when it's @100% charged, it will trickle charge to the max then turn itself off (fan off but light still on) and display OFF. 4) Great repair mode that reconditioned my 6 year old AGM battery from 50% to 80% capacity. 5) Very good price; I paid $24 shipped. CONS: 1) Very short cord, you will need an extension cord. But it's no big deal. 2) Per owner's manual, in Motorcycle mode, it will charge battery to full then turn off and turn back on when voltage drops below 12.5V. But does that mean you cannot maintain your battery in the other modes? It also states not to leave the charger unattended over 12 hours. Therefore, I don't think this is a battery maintainer which is fine for me. ................................................................ With this battery charger, I can charge my batteries before and after I go on a vacation and let not my batteries charge level go down too low thus prolongs the life of my batteries. I only had it for a week and so far, I am very happy about this product. I will update if the charger quit or have some problems.
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Reviewed in the United States on December 21, 2023 by Humble Bear