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3x Starting Current

10x More Start Cycles

5x Service Lifetime

30% Of Original Weight

USA, Canada Dispatch Locally









The TYKOOL U1-PRO-800 is engineered to deliver ultra-high 800A cold cranking amps for stronger, more reliable starts than traditional lead-acid batteries. With over 3000 cycles and an ultra-long shelf life, it offers up to 10 times the longevity of standard battery options. Designed in a compact Group U1 size, it combines powerful output, extended durability, and dependable performance in a lightweight, space-saving form.

Built for demanding outdoor use, this battery features a V0-level fire-resistant housing and an IP67 waterproof and dustproof design for enhanced safety and durability in harsh working conditions. Its direct-fit Group U1 form factor offers broad replacement compatibility with U1-5, U1-6, U1-7, and U1-9 sizes, making installation simple and convenient across a wide range of equipment and mower brands.

Equipped with a multifunctional Battery Management System (BMS), this battery is designed to provide enhanced safety, stability, and long-term reliability during operation. It offers multiple layers of protection, including over-charge, over-discharge, over-current, and short-circuit protection, while also supporting cell equalization for more balanced performance. This intelligent protection design helps ensure safer use and consistent power output in demanding conditions.

Featuring a convenient digital display, this design allows you to check battery voltage and SOC in real time for quick, easy monitoring. Combined with an ultra-lightweight build of only 8.16 lbs, it offers a major weight advantage over traditional 15 lb lead-acid batteries, helping reduce overall equipment load while maintaining strong, reliable performance.

Designed with advanced LiFePO4 technology, this high-performance Group U1 battery delivers powerful starting capability, dependable safety, and long-lasting efficiency for lawn tractors and riding mowers. With 800 CCA, 28Ah capacity, and 358.4Wh of energy, it provides the strong, stable power needed for demanding yard work in both everyday and cold-weather conditions. Built as a lightweight, modern upgrade to traditional batteries, it helps support longer service life, easier handling, and confident performance across a wide range of mowing applications.
Shipping:
1. USA Dispatch Locally, Free Shipping.
2. Product processing time is usually 3 working days.
3. Product Standard shipping time is usually 3-5 days.
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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-PRO-800 |
| Type | LiFePO4 |
| Size | 194*123*176mm |
| Weight | 3.66kg |
| Negative position | R |
| Rated voltage | 12.8V |
| Rated Capacity | 28.0Ah |
| CCA | 800CCA |
| Interior Resistance | 3.9mΩ |
| Rated Charge Current | ≤28A |
| Maximum charging power | 358.4Wh |
| Continuous discharge current | ≤168A |
| Instantaneous discharge current(5S) | ≤1680A |
| 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 * 4s |
| Charge discharge cycle | 1500 cycles |
| Self Discharge Rate | ≤30uA |
| Adaptive temperature | -20℃~80 ℃ |
