KEMIMOTO Lithium Motorcycle Battery YTX14-BS/YTX9-BS, LiFePO4 Lithium Battery 12v 6Ah, Pre-Charged Powersports Battery, with 5 Universal-Fit EVA Spacers, Compatible with Motorcycle ATV UTV Jet Ski

I bought the 4ah for my Harley Night Train (FXSTBI). The battery is 1/2 the size of my old lead acid battery and 1/10th the weight. Yes, 1/10th! And with 320 CCA, it cranks up my Harley like a champ. No problem. They include plenty of spacers, in the box, to fill in the space left in my battery box, with a new battery 1/2 the size of the old one. The "charge" indicator is a nice feature. They say lithium is "expensive" but, this batter cost 1/2 the price of the lead acid battery I bought 5 years ago (or so). I'm thrilled with this battery. It's newly installed so, we'll see how long it lasts.

Saw some of the negative reviews for this item. Not sure where they are coming from. They must not know how to install it correctly. When I went to fire up my bike after sitting several months plugged into a battery misery my old leaded battery would not turn over my Harley. It showed a charge of 13.2 amps and to be good. The indicator on the battery showed a flickering light at 90% so it was probably about 80% charged. I installed the new Kemi Moto and the bike cranked over and started immediately. I cant believe how small and lightweight the unit is. The included spacers make it easy to raise height and fill in the voids left with the smaller frame size. There are also terminals connections on both sides on the top to hook up the positive and negative easily. Also screw connections on multiple side of each terminal clock for easy hookup. I put the battery minder on it and it was charged to 100% in about 10 minutes. Great product - No complaints. As mentioned, not sure where the negative comments are coming from.

Bought this and when I got it I was very skeptical if it would work, Looks like a toy power wheels battery but hasn't failed to start my Kawasaki 800 Teryx yet. Extremely light weight and compact. Definitely recommend if you need an extra battery to run accessories

I like the weight, construction, the foam spacers provided and the multiple terminal mounting options. I was looking for a battery for my 2004 Sportster. I had an LED load equalizer module that was hard to fit under the battery side cover with the stock battery size. The smaller size of the lithium would help this issue. The BTX14L battery that was in there has terminals that are opposite from this battery. Since the lithium batteries are smaller, I was able to flip the battery around and the cables did still reach across the battery. I then used a foam spacer above the battery, then placed my load equalizer above the foam to keep them separate.

The battery is very light and did arrive fully charged, but after 6 months it's completely dead and won't hold a charge. The battery had been keep on a tender daily. Went to start the bike up one morning and it had no power. The battery itself indicated fully charged (according to the lights on top), but when I put it on a commercial battery charger it would not hold a charge. After testing the rest of the starting systems (everything was fine), I installed a much cheaper battery and it fired right up. Hard to believe this $130 battery only lasted 6 months.

Fit as advertised and has been working great since installed.

Great value

This is a good battery for our 4 wheeler, provides quick start , works great, and pleased with it.