BOSCH BLP9 - Group 9-12V Lithium Battery - Powersport Li-ion Phosphate - 120A for Motorcycles, ATV/UTV, Snow Mobiles, Personal Watercrafts, Scooters and Jet Skis - 5.91″ x 3.43″ x 4.13″

We installed this into our Can-Am spyder, the starter runs faster. This battery is smaller and lighter than a wet or gel cell, unit comes with base spacers to allow installation. No issues after several months of use.

This battery mounted right into my 2016 Harley Davidson ultra glide ultra Limited without any issues the bike fires right up no problem even on the coldest mornings I’ve tested it down to 30°. I do keep my bike on a trickle charger all the time, but I would do that with a normal battery anyway so I can’t say anything about it adding or taking away from the performance of the battery I did have to make a slight adjustment to the mounting tabs just bending them out a tad bit it was not a problem. There was no danger of them breaking as long as you do it carefully and once it’s mounted in there, it’s fine. I didn’t weigh the old battery and I didn’t weigh this new battery, but it is probably a quarter of the weight of the regular battery I had in there before.

So I purchased this a few months back and even the first time I installed it, the starting was weak. I connected it to the tender overnight again the following days to make sure that wasn't the issue and even replaced the Stator. Due to an accident in november 2025 my bike had been pretty much parked until february this year, but I kept connecting the battery tender frequently to prevent battery from draining, even though these batteries are supposed to habe built in protections for that. This month as I'm finishing some repairs, to my surprise the battery even when fully charged with a proper battery tender in a day, it is fully drained the next day and there are no short circuits in my Harley or anything, this was even tested with the batter completely removed from the bike. I went against some friends recommendations with other brands, because well, I couldn't go wrong with BOSCH......huge mistake!

This is a great bettery. It has better starting power than the stock battery I had in my 2021 Can Am Spyder RTL. One has to be careful fitting it to the compartment, as the spcer blocks it comes with fit loosely. Read the directions very thoroughly. If one will use a bettery minder/tender, IT HAS TO BE MADE FOR LITHIUM BATTERIES PER THE INSTRUCTIONS. That is not mentioned until nearly the end of the info provided. I purchased one , as I store my trike 6 months a year.

I don't impress really easy, but I am impressed with this lithium battery. I used it to replace the stock lead/acid battery in my Teryx 800 SxS. Living in Southern Arizona presents challenges with batteries and L/A batteries don't seem to take to the heat well (especially non-serviceable sealed L/A batteries). PROS - Weight (Fraction of what a L/A weighs), Fitment (Even though it is by nature smaller, it is in a case with spacers to adjust to your stock battery holder), Durability (TBD, but so far has already outperformed the L/A). CONS - Just a bit more expensive but anticipate a much longer life.

Those who say these are surprisingly small batteries may have ordered the wrong version. The Group 30 comes with two sets of plastic feet to raise the battery slightly. I needed the smaller set to make the battery match the Harley AGM battery in my Tri Glide exactly. Changing the battery in a Tri Glide isn't tricky, but it isn't fun either. When I removed the AGM battery, I noticed how heavy it is. The Lithium-Ion battery is a fraction of the weight and much easier to handle. I had to bend the primary connectors on the bike to reach the battery's mounting holes. These are normally L-shaped, but the L isn't deep enough to reach the mounting hole. A slight bend fixed this. The Li battery turns the bike over noticeably faster, and the lights, etc., are brighter when the engine isn't running. My only concern is that the capacity of this battery is listed as only 8 AH, whereas the original AGM battery had 30 AH. To counter this, the Li battery charges faster—but the capacity could become an issue if you need to run accessories for a long time with the engine off. I've been a big fan of Li batteries for a long time, and have had one in my previous bike for over a decade. This particular battery was the only one I found here that actually fit my battery compartment, despite claims that others would as well. Measure your battery compartment or check your specs before ordering a new Li battery.

Very happy with the product, fast charging and very light

I put this new battery in a 2022 Indian Pursuit on Sept. 17 and rode the bike several times each week for no less than an hour each time .from the start my low voltage warning light came on even though my charging rate on the bikes volt meter showed 14.1 V while running. The warning would go on and off the whole time I rode. I let the bike sit four days with a battery tender on it . The tender is also new. i went to start the bike to take a ride and the this New Lithium Ion battery was dead flat out of power. I tested my tender with a voltage tester and it showed zero voltage. I recharged it with a 10 amp charger and it held a charge for 30 minutes til flat dead again. I have sent it back to Amazon for a full refund. I will stick to the OEM type AGM batterys. they may cost a little more but are far more reliable. I gave it 1 star because I could'nt go lower.