I wrote this up on Facebook, and thought I should share it here, slightly edited. There doesn't seem to be a lot of discussion about Lithium batteries here on Netrider. There is a huge discussion over on Adventure Rider, but reading that will do your head in. Enjoy. Motorcycle battery: Ducati Multistrada 1000S DS. [Warning: Long and sort of technical. Full of opinion.] After seven and a half years, with much coaxing and maintenance over the last six months, the original OEM Yuasa YT12B-BS lead acid battery in my Ducati was REALLY on its last legs. It never did let me down though. Most people seem to be happy with two years life for a lead acid battery. Not me! However, after much research I decided to try a Lithium battery. My selection criteria was: 1. Reputable manufacturer with good reviews, using good, safe technology and components. (Which translates to LiFePO4 chemistry as a minimum, and good quality cells inside the battery.) 2. Excellent CCA for fast and easy starts. I was never happy with how long it took to start the Ducati. 3. Direct replacement fit, or at least with minimal packing required and the correct width. Could be shorter or not as thick, and could even be up to 87mm thick. (The Yuasa is 69mm but there is space for an 87mm battery.) Compatible terminal design. 4. Must have reasonable real Ah capacity. (Lots of Lithium batteries claim high CCA but don't really talk about the real Ah capacity, which is often half the "equivalent" lead acid battery, or less.) 5. I preferred to buy from an Australian supplier/retailer. After much more research selected an Antigravity YT12BS-16, a 16 cell LiFePO4 (Lithium Iron Phosphate) battery. This technology doesn't go up in flames or explode like earlier Li Ion or Lithium Polymer batteries. (Although technically they are still Li Ion batteries and can use polymer in the construction.) The motorcycle Lithium Battery market is full of exaggerated and false claims, and no doubt home to many shysters. They make up numbers to make their products look good; better than lead acid batteries, or just better than the competition. So this Antigravity battery has 480 CCA (Cold Cranking Amps). The original Yuasa has 215 CCA. More than double! The Yuasa was a 10Ah (Amp Hour) battery. This one is claimed to be a 22 Ah (Pb Eq), or 18 Ah, or 15 Ah, depending where you read about it. The battery itself is marked as 16Ah(PbEq), but I couldn't find any good close up photos of the label before purchasing. Take a look at the photo attached. You see, the Pb Eq bit means: "We took a guess at the lead acid Ah capacity this battery is equivalent to. Don't take us on our word. It really has a much smaller capacity." So I bought the largest CCA capacity battery that would fit in the bike, from a supplier that got good reviews, and had a distributor in Australia, hoping that it may actually have something around 9 to 10 Ah capacity, because the Ducati can take a while to start. I also selected a battery that was built to the same size as the OEM battery, so it fit without alterations to the bike. Unfortunately the distributor, selling through eBay, sent me the wrong battery first attempt, but got it right the second attempt, and refunded my return postage charges promptly. So, today I fitted the battery. The bike turns over twice and starts. I don't think it ever started that quickly in its life. No doubt the fact that the voltage only drops from 13.14 to 11.99 volts while the motor is turning over helps. This gives the ECU more power to make more spark, so it starts easier. The old battery used to drop to 10 volts or so. To start my Ducati I just turn it on and press the starter button once, without holding it down. The ECU then controls the start sequence and will turn over the motor for up to about fifteen seconds, and if it hasn't started by then, quits. Usually I had to press the button two or three times to get it started, even when the old battery was fully charged. In fact I think the motor starts so quickly that the ECU doesn't realise it has started for a moment. The starter seems to run on a bit longer. Or maybe it fires but doesn't run on. What ever it is doing, it starts quickly. I'll keep an eye on the running on thing. So far the verdict is that LiFePO4 batteries are good. Too early to be sure though. Ask me in another ten years when I expect to need to replace it.