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3x Starting Current

10x More Start Cycles

5x Service Lifetime

30% Of Original Weight
Email Address

USA, Canada Dispatch Locally









Experience ultra-high cold cranking amps and an impressive 3000-cycle lifespan, far surpassing traditional lead-acid batteries. This ensures reliable starts and extended use, making it a durable and efficient choice for your power needs.

Stay informed with the built-in digital display that shows real-time voltage and State of Charge (SOC). This feature allows you to easily monitor the battery's status, ensuring optimal performance and timely maintenance.

Equipped with a multifunctional Battery Protection Unit (BMS), this battery ensures safety and longevity. It provides over-charge, over-current, over-discharge, and short-circuit protection, along with cell equalization for optimal performance and reliability.

Designed with a V0-level fireproof enclosure and an IP67 waterproof and dustproof rating, this battery ensures maximum safety and reliability in any environment. Its robust construction makes it a direct replacement compatible with various equipment, offering peace of mind and superior performance.

TYKOOL is dedicated to revolutionizing lithium iron phosphate battery technology through continuous innovation and meticulous research. By conducting extensive testing and analysis, TYKOOL's team has gained profound expertise in enhancing battery efficiency, safety, and durability. We are proud to offer cutting-edge solutions that drive performance and reliability for a sustainable future.
Shipping:
1. USA Dispatch Locally, Free Shipping.
2. Product processing time is usually 1-2 working days.
3. Product Standard shipping time is usually 3-5 days.
4. Learn more about our Shipping Policy.
Return:
1. If you are not satisfied with the products, customers can return or request a refund for products within 30 days of receipt.
2. Learn more about our Return & Refund Policy.
| Model | U1-S-400 |
| Type | LiFePO4 |
| Single cell brand | 50C |
| Size | 194*123*176mm |
| Weight | 1.6kg |
| Negative position | L |
| Rated voltage | 12.8V |
| Rated Capacity | 8.0Ah |
| CCA | 400CCA |
| Interior Resistance | 7.7mΩ |
| Rated Charge Current | ≤8A |
| Maximum charging power | ≤80A |
| Continuous discharge current | ≤80A |
| Instantaneous discharge current(5S) | ≤240A |
| Short circuit protection | NO |
| Over Discharge Protection Voltage | 8.0V |
| Over Discharge Recovery Voltage | 9.2V |
| Over Charge Protection Voltage | 15.6V |
| Over Charge Recovery Voltage | 15.2V |
| Equalizing voltage | 3.65V |
| Charge discharge cycle | 1500 cycles |
| Self Discharge Rate | ≤30uA |
| Adaptive temperature | -20℃~80 ℃ |
I am very happy with this battery for my lawnmower. It’s unbelievably lightweight compared to my old battery, which made installation a breeze. The 400 CCA rating is no joke—my engine turns over instantly every time. It’s a powerful and high-quality upgrade that makes mowing much easier. Highly recommended!
Perfect battery for my application. The compact size is definitely a plus. Battery charged up just fine. So far seems to be of good quality.
This product starts my Swisher ZeroTurn mower reliably without any issues. It may be a small battery, but it packs a lot of power!
I have had this battery for several months now, and it has been working great so far. It starts my lawnmower instantly. It has been performing great so far (and is lighter than the old battery).

What’s the warranty length
Hi dear Larry, For lithium batteries, we offer a 1-year after-sales warranty. If there is any problem with the battery within 1 year from the date of receipt of the product, please feel free to contact us to apply for warranty. Thank you. Have a nice day! Best Wishes Amy Aftersale service @TYKOOL Battery
Will the stator charging system on my cub cadet ProZ960L mower damage or improperly charge this lifePo4 lithium battery?
Hi dear Robert, Thank you for your kind contact. The U1-S-400 lithium battery can be charged using your lawn mower charging system. For standalone charging,it is advisable to use a compatible charger (DC, Rated Charging Voltage: 14.60 volts), to the positive (+) and negative (-) terminals of the battery. Usually a lead acid battery charger is not available to charge a lithium battery,may affect performance, safety, or battery lifespan. A suitable charger for the U1-S-400 battery is the 12V 2A charger. It is also available in our store, you can learn more about it by following the link: Link: https://www.amazon.com/dp/B0DYDF6YLT?th=1 Thank you for choosing our products. Best regards, Amy Aftersale service @TYKOOL Battery
Will my Neco trickle battery charger work on the Tykool 400 cca U1 battery?
Dear Randell, Thank you for contacting us. Your Neco trickle charger is also usable. However, lithium batteries have a strong charging capacity and generally do not require a trickle charger for charging,a standard lithium battery charger will suffice. For standalone charging,it is advisable to use a compatible charger (DC, Rated Charging Voltage: 14.60 volts), to the positive (+) and negative (-) terminals of the battery. Usually a lead acid battery charger is not available to charge a lithium battery,may affect performance, safety, or battery lifespan. If the lithium battery will not be used for an extended period, simply charge it fully before storage. If stored for more than six months, you may remove it periodically to recharge it. I hope my response is helpful to you. Warm regards, Amy Aftersale service @TYKOOL Battery