Lithium YTX20L-BS 700A LiFePO4 Motorcycle Battery - Lightweight Power

In this review of the Lithium YTX20L-BS 700A LiFePO4 motorcycle battery, the bottom line is simple: this battery is for riders and powersports owners who want a much lighter, maintenance-free replacement for a lead-acid unit with strong cold-start performance. The reviewer found the 12.8V 10Ah pack delivers impressive start power and quick start-up response while weighing only 3.7 pounds, and it arrives fully charged and ready to install so downtime is minimal.

Key Features

• Compact dimensions: At 6.89in x 3.43in x 6.1in the battery fits many common YTX20L-BS and equivalent trays when dimensions and terminal orientation match.
• High cranking current: Rated 700 CCA, it provides strong starting power that handled high-displacement engines and lawn mower starters in real use.
• Long cycle life: LiFePO4 chemistry gives about 2000 deep cycles, so it should outlast comparable lead-acid batteries by multiple years under normal use.
• Built-in BMS protection: The integrated battery management system prevents over-charge, over-discharge, and short circuits, improving safety and longevity.
• Fast charging support: Accepts a 14.6V lithium charger and can be charged with 2A or 5A currents for flexible charging times and easy top-ups.
• Wide temperature range: Charge and discharge specs cover a broad span, allowing use in cold starts and warmer climates when installed in protected locations.

Who It's For

This battery is best for motorcycle, ATV, UTV, jet ski, snowmobile, riding mower and generator owners who need a direct physical replacement for YTX20L-BS style units and want the benefits of LiFePO4: much lower weight, faster crank response, and longer cycle life. It is especially attractive to anyone who values a battery that ships fully charged and requires no watering or regular maintenance.

Those who should look elsewhere include buyers who cannot confirm matching dimensions, terminal orientation (left negative, right positive), or CCA compatibility with their vehicle, or users who require extremely compact packaging for exposed outdoor installation without additional thermal protection.

Pros & Cons

Pros

• Very light at 3.7 pounds, making handling and installation easier than lead-acid alternatives.
• Strong starting performance with 700 CCA and fast start-up speed valued by users with large engines.
• Built-in BMS and long cycle life reduce maintenance and extend usable life versus lead-acid batteries.
• Arrives fully charged and ready to install, eliminating activation steps.

Cons

• Some customers report mixed long-term battery life compared with expectations, so longevity can vary by use and charging habits.
• Requires confirmation of dimensions and terminal polarity before purchase to ensure fitment.

Specifications

Voltage	12.8V
Capacity	10Ah / 128Wh
Cold Cranking Amps	700 CCA
Dimensions	6.89in x 3.43in x 6.1in
Weight	3.7 Pounds
Terminal Orientation	Left Negative (-), Right Positive (+)
Cycle Life	Approx. 2000 deep cycles

Our Verdict

The Lithium YTX20L-BS is a strong value for riders and powersports owners who can confirm fitment and want a maintenance-free, lightweight LiFePO4 replacement with high start power. It delivers quick cranking, integrated safety via a BMS, and long cycle life, making it a practical upgrade over lead-acid units for most motorcycles, ATVs, jet skis and small equipment.

Frequently Asked Questions

Will this battery fit my YTX20L-BS application?
Check your old battery dimensions and terminal positions; if they match the listed 6.89in x 3.43in x 6.1in size and left negative / right positive layout, it should fit.

What charger should I use?
Use a compatible 14.6V lithium charger; 2A is the recommended standard charging current and 5A is supported for faster charging.

Is maintenance required?
No maintenance, no watering, and no activation are required; the battery ships fully charged and the BMS handles protection and cell balancing.