CTEK MXS 3.8 12V Battery Charger
CTEK Battery Charger 12v 3.8 Amp 7 Stage The MXS 3.8 possesses advanced microprocessor control and a patented Float-Pulse maintenance system for use on batteries from 1.2Ah up to 85Ah. The patented Float-Pulse maintenance system means the MXS 3.8 is ideal for long-term maintenance. The MXS 3.8 is a versitile unit which solves a broad range of battery problems. Best of all, it is an ideal charger for everyday use. The MXS 3.8 is packed with saftey features such as if the battery clAs are incorrectly connected, the reverse polarity protection will ensure that the battery and charger are not damaged. If a battery fails during charging it is taken care of, through the chargers advanced control. The MXS 3.8 has the ability to diagnosis the condition of the battery and can establish whether it can receive and retain a charge. It has a patented automatic desulphation program and comes with a special Snowflake mode for optimum charging on those cold winter days. The LED display ensures the entire testing, charging and maintenance process of battery rejuvination can be easily followed.
CTEK Battery Charger 12v 3.8 Amp 7 Stage The MXS 3.8 possesses advanced microprocessor control and a patented Float-Pulse maintenance system for use on batteries from 1.2Ah up to 85Ah. The patented Float-Pulse maintenance system means the MXS 3.8 is ideal for long-term maintenance. The MXS 3.8 is a versitile unit which solves a broad range of battery problems. Best of all, it is an ideal charger for everyday use. The MXS 3.8 is packed with saftey features such as if the battery clAs are incorrectly connected, the reverse polarity protection will ensure that the battery and charger are not damaged. If a battery fails during charging it is taken care of, through the chargers advanced control. The MXS 3.8 has the ability to diagnosis the condition of the battery and can establish whether it can receive and retain a charge. It has a patented automatic desulphation program and comes with a special Snowflake mode for optimum charging on those cold winter days. The LED display ensures the entire testing, charging and maintenance process of battery rejuvination can be easily followed.
CTEK Battery Charger 12v 3.8 Amp 7 Stage The MXS 3.8 possesses advanced microprocessor control and a patented Float-Pulse maintenance system for use on batteries from 1.2Ah up to 85Ah. The patented Float-Pulse maintenance system means the MXS 3.8 is ideal for long-term maintenance. The MXS 3.8 is a versitile unit which solves a broad range of battery problems. Best of all, it is an ideal charger for everyday use. The MXS 3.8 is packed with saftey features such as if the battery clAs are incorrectly connected, the reverse polarity protection will ensure that the battery and charger are not damaged. If a battery fails during charging it is taken care of, through the chargers advanced control. The MXS 3.8 has the ability to diagnosis the condition of the battery and can establish whether it can receive and retain a charge. It has a patented automatic desulphation program and comes with a special Snowflake mode for optimum charging on those cold winter days. The LED display ensures the entire testing, charging and maintenance process of battery rejuvination can be easily followed.
CTEK Battery Charger 12v 3.8 Amp 7 Stage The MXS 3.8 possesses advanced microprocessor control and a patented Float-Pulse maintenance system for use on batteries from 1.2Ah up to 85Ah. The patented Float-Pulse maintenance system means the MXS 3.8 is ideal for long-term maintenance. The MXS 3.8 is a versitile unit which solves a broad range of battery problems. Best of all, it is an ideal charger for everyday use. The MXS 3.8 is packed with saftey features such as if the battery clAs are incorrectly connected, the reverse polarity protection will ensure that the battery and charger are not damaged. If a battery fails during charging it is taken care of, through the chargers advanced control. The MXS 3.8 has the ability to diagnosis the condition of the battery and can establish whether it can receive and retain a charge. It has a patented automatic desulphation program and comes with a special Snowflake mode for optimum charging on those cold winter days. The LED display ensures the entire testing, charging and maintenance process of battery rejuvination can be easily followed.
in 18 offers
The lowest price for CTEK MXS 3.8 12V Battery Charger right now is $75.49 at Trek Hardware, compared across 15 retailers.
The all-time low was $75.49 on 29 Sept 2025. That's the lowest price we've ever tracked — a great time to buy.
Prices last updated 10 June 2026.
Last updated at 10/06/2026 15:13:22
CTEK MXS 3.8, Battery Charger 12V, Smart Battery Charger, Battery Maintainer, Battery Tender Charger, Motorcycle and Car Charger, Battery Desulfator
Free delivery
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Ctek Mxs 3.8 12V 3.8A
Free delivery between 15–18 June
CTEK MXS 3.8 12V Smart Battery Charger 7 Stage - Brand New
Free delivery
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
CTEK MXS 3.8 Smart 12V Battery Charger & Maintainer for Cars & Motorcycles | MXS111
Free delivery
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
CTEK MXS 3.8, 12V Smart Battery Charger Battery Maintainer
Free delivery
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
CTEK 12V 3.8Amp Battery Charger MXS3.8 | 0.848kg | 5 Year Warranty | MXS38AA
Free delivery
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CTEK MXS 3.8 Battery Charger | Affordable Classics
Ctek Mxs 3.8 12V 3.8A Battery Diagnosis Advanced Automatic Charger
Delivery between 11–19 June $22.48
CTEK 12V Battery Charger 3.8A MXS - 56-988
Free delivery
CTEK Battery Charger 12v 3.8 Amp 7 Stage - MXS3.8
Delivery $12
originally posted on pbtech.co.nz
I was pleasantly surprised by the quality of this battery charger made in Sweden. It is well made and was easy to set up. I felt quite safe using it and it worked as expected. The only disappointment was the fact the optional 'comfort adapter' eyelets wouldn't fit the battery terminal screws in my car. I have since learnt that there are several comfort adapter sizes available but just the one was included in this kit. Presumably it is the most common size. I am thinking of drilling or filing the eyelet holes to make them fit as the size difference seems minimal.
originally posted on ebay.com
My old Marine CTEK charger died. I spoke to CTEK customer support who said that the 3.8 was both a better and cheaper charger. As long as it wasn't likely to be openly exposed to a marine environment it would be worth considering. So i did. As with all CTEK chargers it works perfectly and maintains my starter battery without missing a beat. However... Anyone considering installing a 3.8 in their boat be aware, one thing they didn't tell me was the 3.8 doesn't come with the huge length of cable the Marine version does, probably about 500mm as opposed to about 3m. My Electrics cabinet is very close to my engine bay, but still not close enough. I had to extend the charge wire.
originally posted on ebay.com
I own a small farm lots of power equipment that gets used intermittently used to have endless problems with sulphated batteries until about 15 years ago I was put onto the need for maintenance chargers. Since then I've tried many brands of charger all of which have eventually failed especially during winter time in damp tractor sheds the only ones to survive are ctek. My oldest ctek is about 10 yrs old with this new one I own 6 of them of different capacities All you need to do is buy the ctek charger of correct capacity for your battery plug it in and forget about it and your machine will start wether it's 6months or 2 years in the future maintenance free batteries are best but if your battery isn't just check your electrolyte every now and again Don't bother with ... MoreI own a small farm lots of power equipment that gets used intermittently used to have endless problems with sulphated batteries until about 15 years ago I was put onto the need for maintenance chargers. Since then I've tried many brands of charger all of which have eventually failed especially during winter time in damp tractor sheds the only ones to survive are ctek. My oldest ctek is about 10 yrs old with this new one I own 6 of them of different capacities All you need to do is buy the ctek charger of correct capacity for your battery plug it in and forget about it and your machine will start wether it's 6months or 2 years in the future maintenance free batteries are best but if your battery isn't just check your electrolyte every now and again Don't bother with any other chargers and what they promise ctek is all you need
| Rated Voltage AC | 220–240VAC, 50–60Hz |
| Charging voltage | SMALL, NORMAL: 14.4V, COLD/AGM: 14.7V |
| Min battery voltage | 2.0V |
| Charging current | 3,8A max |
| Current, mains | 0.5A rms (at full charging current) |
CTEK MXS 3.8, Battery Charger 12V, Smart Battery Charger, Battery Maintainer, Battery Tender Charger, Motorcycle and Car Charger, Battery Desulfator
Free delivery
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
Ctek Mxs 3.8 12V 3.8A
Free delivery between 15–18 June
CTEK MXS 3.8 12V Smart Battery Charger 7 Stage - Brand New
Free delivery
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
CTEK MXS 3.8 Smart 12V Battery Charger & Maintainer for Cars & Motorcycles | MXS111
Free delivery
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
CTEK MXS 3.8, 12V Smart Battery Charger Battery Maintainer
Free delivery
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
I was pleasantly surprised by the quality of this battery charger made in Sweden. It is well made and was easy to set up. I felt quite safe using it and it worked as expected. The only disappointment was the fact the optional 'comfort adapter' eyelets wouldn't fit the battery terminal screws in my car. I have since learnt that there are several comfort adapter sizes available but just the one was included in this kit. Presumably it is the most common size. I am thinking of drilling or filing the eyelet holes to make them fit as the size difference seems minimal.
My old Marine CTEK charger died. I spoke to CTEK customer support who said that the 3.8 was both a better and cheaper charger. As long as it wasn't likely to be openly exposed to a marine environment it would be worth considering. So i did. As with all CTEK chargers it works perfectly and maintains my starter battery without missing a beat. However... Anyone considering installing a 3.8 in their boat be aware, one thing they didn't tell me was the 3.8 doesn't come with the huge length of cable the Marine version does, probably about 500mm as opposed to about 3m. My Electrics cabinet is very close to my engine bay, but still not close enough. I had to extend the charge wire.
I own a small farm lots of power equipment that gets used intermittently used to have endless problems with sulphated batteries until about 15 years ago I was put onto the need for maintenance chargers. Since then I've tried many brands of charger all of which have eventually failed especially during winter time in damp tractor sheds the only ones to survive are ctek. My oldest ctek is about 10 yrs old with this new one I own 6 of them of different capacities All you need to do is buy the ctek charger of correct capacity for your battery plug it in and forget about it and your machine will start wether it's 6months or 2 years in the future maintenance free batteries are best but if your battery isn't just check your electrolyte every now and again Don't bother with ... MoreI own a small farm lots of power equipment that gets used intermittently used to have endless problems with sulphated batteries until about 15 years ago I was put onto the need for maintenance chargers. Since then I've tried many brands of charger all of which have eventually failed especially during winter time in damp tractor sheds the only ones to survive are ctek. My oldest ctek is about 10 yrs old with this new one I own 6 of them of different capacities All you need to do is buy the ctek charger of correct capacity for your battery plug it in and forget about it and your machine will start wether it's 6months or 2 years in the future maintenance free batteries are best but if your battery isn't just check your electrolyte every now and again Don't bother with any other chargers and what they promise ctek is all you need
Set & forget Charger. Connect it up & walk away, the charger will do the rest. The extra cash for the silicone sleeve is worthwhile if you can find one. The plating on the bulldog clips seems to be better quality than what you might usually get & the clips are fully insulated. I had never heard of this brand but a suggestion on a forum somewhere made me look & I' m glad I did because the one I had in mind was a series of decisions you have to make with the buttons. This is set & forget - no drama at all & overcharge proof. If your battery is sitting for some time then this is the answer - the higher [5] amperage one would be faster but this one works fine & charges fast enough my application [2020 i30 N Line sitting idle for weeks at a time - 550CCA battery].
I have had Ctek chargers for years. They have safed me from normally having to replace discharged batteries on my Cars, Landcruiser, Truck and motorbikes. My other chargers will not recondition and/or restore flat batteries. As long as there is at least 1.5 volts or more....a Ctek will bring it back. I have the - 0.8, 3.8, 7 and 15 Amp Hr 12 volts and the 14 Amp Hr 24 volt Cteks for all my gear....for the mower, key start generator, jetski, boats, motorbikes, cars, 4WD, off road camper, Trucks, and Excavators. They are just awesome. Nothing comes close to a Ctek. Cheers Rob
I bought this to leave attached to my Jet Ski whilst not in use and it works perfectly. Very easy to install and connect/disconnect.
Awesome charger
This product appeared to have good features and it was on sale. Unfortunately it tuned out worthless to me, after a few minutes of being connected to the battery, the error LED just flashes. I attempted a few times and tested the output to see zero volts!Returned to store only to be told there is a no replacement warranty.
It's a no-frills battery charger/maintainer and it did exactly what I expected it to do! It is self regulating and can sense whether the battery needs recharging or already fully charged. And the low charging rate means that it does not cook the battery. A 5-star rating.
This trickle feed charger is a life saver. My car which only is used for car shows and events was often close to having a flat battery due to irregular use. Now I never have to worry. Simple to connect and the battery always is ready to go. A great imvestment.
| Rated Voltage AC | 220–240VAC, 50–60Hz |
| Charging voltage | SMALL, NORMAL: 14.4V, COLD/AGM: 14.7V |
| Min battery voltage | 2.0V |
| Charging current | 3,8A max |
| Current, mains | 0.5A rms (at full charging current) |