TYKOOL LFP9-BS-STD [+ -] Lithium Powersports Battery 240CCA 4Ah Digital Volt Readout IP66 for Ninja 400 Z650 Honda CBR600F4i KTM Duke 390 Suzuki GSX-R600 GSXR750 Predator 500 Replaces YTX9-BS

Very impressive!! Used for my winch I use for pulling trees down. Long lasting and very powerful. It’s very lightweight and small. Highly recommend for anyone needing cranking power in a lithium battery.

Installed this in my 1994 Harley Dyna Convertible 1340cc, 32 amp charging system. Really happy with this purchase! My year and model motorcycle has a unique battery box that only allows a battery of 6-7/8 inches in length to fit. Some batteries are a little longer and will not fit. Even a fraction longer will not work. This one fits exactly! I was going to use the next size smaller battery #TYKOOL YTX14L-BS, but decided to contact the company to double check. They suggested the YTX20L-BS-STD was "more suitable for my application" and informed me that the battery should fit and it does! No room to spare but it fits!! This battery is replacing a non-BMS lithium battery that I have used for the past 4-5 years, and I am impressed with the quality and construction. Nice thick plastic case, solidly mounted posts that are integrated into the case, and stainless hardware. Install was simple and easy. Battery arrived fully charged but I put a charge on it before install and it really did not need it. The lithium charge cycle only took about 10 minutes. I like the feature of the digital voltage display on the top of the battery as it works well and the read out matches my meter. The bike fired right up. The 480 cranking amps really turns the engine over with zero effort. After it starts, the battery is recharged in the first 5-6 minutes of running. Really impressed with this battery! Happy with the battery fitment and function. The install was easy, and the companies customer service provided me with all the information I requested/needed to make sure I got the right battery for my application. Highly recommend!

Battery seems to be the real deal. Came charged and is surprisingly light. Works great in my generator.

Don't really like to write bad reviews but since there was only five when I originally bought this battery I figured I would add mine. When I first received battery as others have already noted the lightweight surprised me I figured if it works correctly and get twice as long then a normal lead acid or AGM I was fine with it but it was really just feather weight which surprised me. Battery was fully charged and seem to work fine for the first two weeks then last time I checked it it was at 86% then did not start the bike for 2 days and then just went completely dead and would not take a charge. Had to fight with Amazon a little bit as far as to get a full refund since it was 2 days past the 30 day. Still have not received the refund seems to be taking an exorbitant amount of time and I think I've only sent two things back in the Last 5 Years of ordering many items from Amazon. Hopefully if you already have this battery or planning on getting it you have better results than mine but I can only review my own experience and with my experience this battery was Zero Stars.

Battery is 51913, 420CCA 2003 BMW R1150 GS I was on the fence about this battery but so far it has been a great experience. As soon as the temps started dropping my old (Non-Lithium} battery was really struggling, and it was pretty frustrating as the bike is in storage at the moment and I do not have power to it for a trickle charger. This battery is unbelievably light and as some of the other boys stated, fits perfect. First time I installed it, the bike fired right up with no problems. We just had a cold spell come through the area here in Western Massachusetts and I had not tried starting the bike again for a couple weeks. went out this morning with an indicated 1 Degree F outside temp after minus digits last night. I just changed oil and I'm running mineral based 20w-50w. Must be thick as molasses. The big girl certainly was in no mood to start and it probably took me maybe two minutes of cranking starts and resting, but she started. This little battery did not give up. Just buy it.

It's light. Good. Arrived fully charged.

Extremely lightweight. Works great.

Feels very lightweight compared to the lead acid battery it is replacing, however with regards to functionality, it was absolutely perfect. The included screws were a great convenience. My generator had no problem starting with this battery and LiFePo4 batteries are a no-brainer.

Great battery. Has a battery charge state indicator on the top showing the exact voltage. It shuts down when the battery is low to protect it from being discharged too deeply.

Bought this battery for my quad it worked good for a couple rides I went to pull it out for winter as I do every year cause I don’t use my bike during winter and to my surprise the battery is swollen and split open just lovely

Worked well for three months then died. It won't even take a charge.

Worked for a week then it went dead instantly from full charge and does absolutely nothing

tres performante et legere.