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Ships within 48 hours · Estimated delivery Aug 22 - Aug 27
For Your Every Summer RSVP, with Code: SUMMER15
Description
CTEK Power Inc 56-958 MUS 4.3 Polar - 12VFeatures Complete Battery Care Unique and patented system to recover, charge and maintain all lead acid battery types to maximize performance and extend life. Safe and easy to use User safety through spark free operation and reverse polarity protection. Vehicle electrical safety through exceptionally clean voltage and current delivery with no surges or spikes. No need to disconnect the battery from the vehicle when charging. Connect and Forget Simple
FeaturesComplete Battery Care - Unique and patented system to recover, charge and maintain all lead-acid battery types to maximize performance and extend life.
Safe and easy to use - User safety through spark free operation and reverse polarity protection. Vehicle electrical safety through exceptionally clean voltage and current delivery with no surges or spikes. No need to disconnect the battery from the vehicle when charging.
Connect and Forget - Simple plug and play operation. Select the program and mode and leave the charger to do the rest.
Unique 8 step charging - The patented 8 step program tests battery condition and revives, charges and maintains to ensure maximum battery life and performance. RECOND recovers deep discharged and stratified batteries. FLOAT/PULSE maintenance ensures ideal battery care during periods of inactivity.
Charges down to -22°F (-30°C) - Specially developed for use in extreme cold conditions and featuring AC and DC cables adapted for low-temperature use.
Extends battery life - The unique features of CTEK chargers combine to maximize performance and extend battery life.
SUPERB CHARGING WITH ADDED WINTER PERFORMANCE
The MUS 4.3 POLAR (Part No. 56-958) has been specially developed to offer excellent all-around charging with special cold weather performance and adapted AC and DC cables to handle severe cold down to -22°F (-30°C). The MUS 4.3 POLAR is an advanced microprocessor controlled battery charger providing unrivaled performance on batteries from 1.2Ah up to 110Ah. Features include the ability to diagnose a battery's condition to establish if it can receive and retain a charge, a patented automatic desulphation program, and a special reconditioning function that will revive and restore deeply discharged and stratified batteries. ‘Snowflake’ mode ensures ideal charging performance even in the most extreme cold conditions. Patented Float/Pulse maintenance makes the MUS 4.3 POLAR ideal for long-term maintenance. The entire process of battery testing, charging, and maintenance is easily followed on the clear LED display.
The MUS 4.3 POLAR is a fully automatic ‘connect and forget’ 12V charger with 8 charging steps and offers selectable 0.8A and 4.3A programs. The RECOND and SNOWFLAKE modes operate individually or together in both 0.8A and 4.3A programs providing great flexibility for the user. Wide charging range on all lead-acid battery types from 1.2Ah up to 110Ah with additional maintenance capability to 160Ah. Splash-proof and dustproof (IP65). The MUS 4.3 POLAR is easy and safe to use, protects vehicle electronics, spark-free, reverse polarity protected, and short circuit proof. The MUS 4.3 POLAR features a 5-year warranty. Alligator clamps and eyelets included.
TECHNICAL SPECIFICATIONS
Part No.
56-958
Input voltage AC
100-120VAC, 50-60Hz
Charge Voltage
14.4 / 15.0 / 15.8 V
Charge Current
Max 4.3 A
Type of Charger
8 step, fully automatic charging cycle
Type of Battery
12V lead-acid batteries (Wet, MF, AGM, GEL)
Battery Capacity
1.2-110 Ah, up to 160 Ah for maintenance
Warranty
5-year warranty
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.9 ★★★★★
Based on 14 reviews
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Product Reviews
★★★★★ 5
Compact, Travel friendly, Works well with ROG ALLY
Color: White
This is a compact and well built adapter, and it is travel friendly. I use it for my ROG ALLY when I don’t want it docked and still need charging and other device inputs. It has just about enough ports for what I need, usb-c power delivery port for charging (ROG ALLY can still run at maximum performance using this with a 100W charging brick and a cable that allows 100W power pass through). I use the remaining USB-C port and two USB-A ports for external hard drives or gaming controller 2.4Ghz receiver. Transferring files between ROG ALLY and an external SSD with this adapter is fast, could reach above 380 mb/s. All the device inputs were as advertised, “plug and play”. The hdmi port also gives me an option to connect my ROG ALLY to TV when I don’t have the dock which takes up more space for traveling. One thing to note, you will have to use the USB-C port on your PC which provides more power (usually at the back and not on the front of the pc), if not plugged in to a power source. When I received my first order, I plugged it into the front USB-C port of my mini PC, just for my wired keyboard and mouse, the computer didn’t recognize it and couldn’t get any input from my keyboard and mouse. I returned the first one and thought it wouldn’t work as I expected. A few days later when I was using another Anker 7 in 1 USB-C adapter, I ran into the same issue but I know that adapter had been working well, then I realized I had to plug it into the port on the back of the PC. So I got this again and tried, it just worked like a charm. Hope they actually mentioned it on their product page so I wouldn’t have to return the first one. The cable length on this adapter is just right, not too long or too short when using with ROG ALLY (not hanging, since the cable is pretty sturdy, when I picked up the ROG ALLY, the adapter just comes along).
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Reviewed in the United States on August 18, 2025
★★★★★ 5
Anker 332 USB-C Hub (5-in-1): The Swiss Army Knife of Connectivity
Color: Black
Ever felt like your laptop was playing a cruel joke on you with its lack of ports? Enter the Anker 332 USB-C Hub (5-in-1)—the tech equivalent of a superhero swooping in to save the day (and your productivity).
Port Party
This hub is like the ultimate party host: it’s got a little something for everyone. Need to connect an external monitor? Boom, there’s a 4K HDMI port. Want to transfer files faster than a cheetah on a caffeine rush? It’s got two 5 Gbps USB-A ports and a 5 Gbps USB-C data port ready to go. Oh, and don’t worry about keeping your laptop charged while you’re multitasking like a boss—there’s a 100W PD-IN port to keep the power flowing.
4K HDMI: Because Why Settle for Less?
Let’s talk about that HDMI port, shall we? We’re talking 4K at 30Hz, which means your Netflix binge or work presentation will look crisp, clean, and oh-so-satisfying. It’s like upgrading from VHS to Blu-ray—you won’t believe you ever survived without it.
File Transfers in a Flash
Remember the days when transferring files felt like waiting for dial-up internet to connect? Yeah, those days are over. With up to 5 Gbps transfer speeds, you can move files so fast that you’ll barely have time to grab your coffee before it’s done. Just think of all the time you’ll save—and how much more you can procrastinate as a result!
Pass-Through Charging: Power Up, Don’t Power Down
One of the worst feelings in the tech world is watching your battery icon turn red while you’re in the middle of something important. But fear not—this hub’s got you covered with up to 85W pass-through charging. So, go ahead and keep doing whatever it is you’re doing, whether it’s crushing deadlines or browsing cat memes (no judgment here).
Compact and Reliable
The Anker 332 USB-C Hub is compact enough to slip into your laptop bag without a second thought. And with an 18-month worry-free warranty, it’s clear that Anker has your back—just in case you get a little too enthusiastic with all those ports.
Final Thought
In a world where laptops keep losing ports faster than you lose socks in the laundry, the Anker 332 USB-C Hub is the perfect solution. It’s reliable, versatile, and just what you need to bring your laptop back to life. So go ahead—plug in, power up, and let the good times (and files) roll!
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Reviewed in the United States on August 20, 2024
★★★★★ 4
Reliable Hub That Gets the Job Done
Color: Blue, Color: Blue
Solid Anker USB C hub that does what it’s supposed to do. Ports work well and it’s easy to use right out of the box. Only downside is the hard plastic casing, it feels fine, but I could see it cracking if something heavy drops on it.
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Reviewed in the United States on February 23, 2026
★★★★★ 5
Excellent device, see my use case in the review.
Color: Grey
I got the hub in two days ago. I plugged it in to a uni-directional HDMI cable (I have used these for years from Monoprice.com) from the hub to the TV and the PD port into the charging block. Charging started but the iPad Pro screen was NOT showing on the TV.
I switched in a regular HDMI cable from the hub to the TV and it worked. The Monoprice cables have some sort of logic in the cable ends allowing a very thin HDMI cable. I have used these on my TVs at home and when teaching at a senior facility for at least 8 years now.
So, something with the unidirectional HDMI cables seems to interfere with this hub but “regular” HDMI cables seem OK.
Before buying this hub, I had emailed Anker TS with a question. Anker turned around 3 emails with answers in just over an hour. This is one of the reasons why I have bought quite a lot of Anker products over the years.
My use for this is to plug in my iPad Pro to my AVR so that I can stream stuff to my TV while simultaneously charging the iPad at the same time. This works well.
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Reviewed in the United States on October 16, 2025
★★★★★ 5
Works great and handles everything.
Color: Black
Works great. I plug in a standalone video camera for meetings, a keyboard & trackball, and monitor with a couple of other slots open, like for a portable CD-ROM/DVD player. One plug into the laptop and everything is connected. Initially, I bought another hub, but that one didn't consistently work. This one does. In a month of heavy use, I've had no issues with it at all.
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Reviewed in the United States on April 28, 2026
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