The LITHIUM US (CTEK Part No. 56-926) is an advanced microprocessor-controlled charger specially designed to recharge and maintain the cells of Lithium-Iron (LiFePO4) batteries – maximizing their performance and lifespan. With up to 4.3A of charge current available the LITHIUM US is extremely flexible and will charge LiFePO4 batteries from 5Ah to 60Ah and maintain up to 120Ah.
(Choosing a Charger)
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Description
CTEK 12V Lithium US Smart Charger 4.3AThe LITHIUM US (CTEK Part No. 56 926) is an advanced microprocessor controlled charger specially designed to recharge and maintain the cells of Lithium Iron (LiFePO4) batteries maximizing their performance and lifespan. With up to 4. 3A of charge current available the LITHIUM US is extremely flexible and will charge LiFePO4 batteries from 5Ah to 60Ah and maintain up to 120Ah.(Choosing a Charger) Plug & Play The operation is simple and charging will
Plug & Play
The operation is simple and charging will commence upon connection. With no need to disconnect the battery from the vehicle, at charge start the LITHIUM US will automatically reset any low voltage protection electronics (Battery Management System) fitted. Charging can be restarted manually at any time using the ‘Reset’ button.
Fully Automatic
The CTEK LITHIUM US is a fully automatic ‘connect and forget’ charger with 8 charging steps including a testing sequence to show if the LiFePO4 battery can take and retain the charge, a unique maximization step to restore full capacity, and patented maintenance charging to ensure maximum performance even after months of inactivity. Splash-proof and dust-proof (IP65) the LITHIUM US is easy and safe to use, protects vehicle electronics, is spark-free, is reverse polarity protected and short circuit proof. The LITHIUM US features a 5-year warranty.
8-Step Program
- Accept: Tests if the battery can accept charge. This step prevents that charging proceeds with a defect battery.
- Bulk: Charging with maximum current until approximately 90% battery capacity.
- Absorption: Charging with declining current to maximize up to 95% battery capacity.
- Analyze: Tests if the battery can hold charge. Batteries that can not hold charge may need to be replaced.
- Completion: Final charge with reduced current.
- Maximization: Final charge with maximum voltage up to 100% battery capacity.
- Float: Maintaining the battery voltage at maximum level by providing a constant voltage charge.
- Pulse: Maintaining the battery at 95-100% capacity. The charger monitors the battery voltage and gives a pulse when necessary to keep the battery fully charged.
Video Demo of 8-Step Smarter Charging Process
Features
- COMPLETE LIFEPO4 BATTERY CARE: Unique and patented system to Recover, Charge, and Maintain LiFePO4 Batteries to maximize performance and extend life.
- SAFE 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. Manual reset available.
- UNIQUE 8-STEP CHARGING: The patented 8-step program tests battery condition and charges and maintains to ensure maximum LiFePO4 battery life and performance. Float/pulse maintenance ensures ideal battery care during periods of inactivity.
- EXTENDS BATTERY LIFE: The unique features of CTEK chargers combine to maximize performance and extend LiFePO4 battery life.
Specs
- CTEK PN: 56-926
- Input voltage AC: 100-120VAC, 50-60Hz
- Charge voltage: 13.8 / 14.4V
- Charge current: Max 4.3A
- Type of charger: 8-step, fully automatic charging cycle
- Type of battery: 12V Lithium-Ion Phosphate (LiFePO4)
- Battery Capacity: 5.0Ah – 60Ah, maintenance charging up to 120Ah
- Protection Rating: IP65 (splash and dust proof)
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
4.1 ★★★★★
Based on 127 reviews
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Product Reviews
★★★★★ 5
Fresh
The condition was good durability was good. The value for it is really really good and easy to use it. Taste was so good. The texture was normal and would buy again and so fresh and great.
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Reviewed in the United States on May 1, 2026
★★★★★ 5
A no-brainer
They taste good, arrived in great shape with no bruises, pricing can't be beat, and were just on the verge of being at peak condition which is just what you would hope for....not green anymore but good for several days. What's not to like? Prompt delivery. I don't know how they do it but they did. Five stars earned.
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Reviewed in the United States on April 19, 2026
★★★★★ 4
Just right bananas
Buying more groceries on Amazon lately. So, want to start sharing experience. The bananas were just right—not too ripe and not too green. Would buy them again thru Amazon
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Reviewed in the United States on May 26, 2026
★★★★★ 5
Received a perfect bunch!
Some things are truly hit or miss with Amazon Fresh grocery deliveries!
I Some things are truly hit or miss with Amazon Fresh grocery deliveries!
I hadn’t ordered bananas for about a month due to what I’d received in the past.
Personal preference? I want those lovely pale green ends! Please!!! I don’t like the flavor or even the change in scent that happens when bananas turn darker yellow, freckle - or worse? Turn brown. Yuck.
Each previous delivery, I hadn’t been able to eat more than 3 out of each bunch because of the already yellowed fruit received. I even tried the currently trendy recommendation of wrapping the individual stem ends in plastic wrap to help slow the ripening process.
Was very pleased to receive a bunch of 6 small sized bananas, all delicately green and completely beautiful!
Beautiful job by the thoughtful delivery person as well, who didn’t just leave the bags in the rain on the (only 2!) steps, but made sure they were under the protection of the porch and not blocking my door.
Some items I never order anymore (beloved snap peas and garnet potatoes are two examples) after receiving spoiled items - more than once.
Apparently notifying Amazon of our understandable disappointment, not to mention the waste! can sometimes improve the quality of items delivered.
I do very much appreciate the Amazon Fresh delivery service in my (rapidly approaching) old age. As I rarely go out anymore, this has Some things are truly hit or miss with Amazon Fresh grocery deliveries!
I hadn’t ordered bananas for about a month due to what I’d received in the past.
Personal preference? I want those lovely pale green ends! Please!!! I don’t like the flavor or even the change in scent that happens when bananas turn darker yellow, freckle - or worse? Turn brown. Yuck.
Each previous delivery, I hadn’t been able to eat more than 3 out of each bunch because of the already yellowed fruit received. I even tried the currently trendy recommendation of wrapping the individual stem ends in plastic wrap to help slow the ripening process.
Was very pleased to receive a bunch of 6 small sized bananas, all delicately green and completely beautiful!
Beautiful job by the thoughtful delivery person as well, who didn’t just leave the bags in the rain on the (only 2!) steps, but made sure they were under the protection of the porch and not blocking my door.
Some items I never order anymore (beloved snap peas and garnet potatoes are two examples) after receiving spoiled items - more than once.
Apparently notifying Amazon of our understandable disappointment, not to mention the waste! can sometimes improve the quality of items delivered.
I do very much appreciate the Amazon Fresh delivery service in my (rapidly approaching) old age. As I rarely go out anymore, this has been invaluable for me.
Thank you so very much…
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Reviewed in the United States on February 23, 2026
★★★★★ 5
Nice size bananas. Not bruised or spoiled. Good bananas!
Really beautifully picked for ripeness and last a few days once you get them home.
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Reviewed in the United States on May 27, 2026