
Shipping Estimate
USA
- USA
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- USA
- CAN
Ships within 48 hours · Estimated delivery Jul 6 - Jul 11
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
4.2 ★★★★★
Based on 2240 reviews
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Product Reviews
★★★★★ 5
Sleek, Sturdy, and Easy to Assemble: Zinus Kai Platform Bed Frame Review
Size: Full, Style: Kai
The Zinus Kai Bamboo and Metal Platform Bed Frame with Headboard was a solid choice for upgrading my bedroom. The assembly was straightforward once I sorted out the parts (always a little organizing required), and the tools needed for the setup are included in the box. It took me about an hour to get everything together, and the instructions were clear enough for a hassle-free process.
Once assembled, the frame isn’t overly heavy, which makes it easy to move around, especially with the helpful sliders. The final look of the bed is sleek and modern, with the bamboo accents giving it a classy and natural touch that fits perfectly with various bedroom decors.
The under-bed clearance is one of my favorite features—there’s plenty of space for bins and storage, which helps maximize room in the bedroom. As someone who’s on the heavier side, I really appreciate the platform bed’s solid support. It offers excellent stability and has completely eliminated the creaking and sagging I’ve had with other frames. It’s a sturdy base, and the support bars provide a reassuring level of durability.
Final Thoughts
Overall, I’m very happy with the Zinus Kai Platform Bed Frame. It’s easy to assemble, looks great, and offers great support, especially for those who need a little extra stability. The under-bed clearance is an added bonus for storage, and the design gives a clean, modern look. For the price, it’s a fantastic value, and I’d recommend it to anyone looking for an affordable, stylish, and reliable bed frame.
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Reviewed in the United States on January 1, 2026
★★★★★ 5
Beautiful and sturdy bed frame!
Size: Twin, Color: White, Size: Twin, Color: White
Really happy with this bed frame! The wood looks great, the white finish goes with everything, and it gives the room a clean modern look. It was easy to put together and looks even better in person. Great quality for the price!
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Reviewed in the United States on May 14, 2026
★★★★★ 1
CHOOSE a DIFFERENT Bed Frame!!!!
Size: Queen, Color: Walnut
Please choose a different bed frame. My partner and I built this today together and it took way longer than we thought it was going to because the instructions were so horrible. Some of the parts were also very flimsy. It looks good once done but it’s not worth it. I wish I had picked something else. Not to mention one of the wood pieces already was cracked when we opened the box.
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Reviewed in the United States on January 27, 2026
★★★★★ 4
Sturdy bed frame
Size: Full, Color: White
A lot to put together for old lady but great product
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Reviewed in the United States on May 22, 2026
★★★★★ 5
Love this bedframe!
Size: Queen, Color: Walnut
Delivered earlier promised! :)
Went easily together, the directions were spot-on!
No need for a boxspring, but if you have one? It just makes the bed a bit higher.
Just the style per the picture
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Reviewed in the United States on February 7, 2026