I took the opportunity while in ‘lockdown’ to fit the lithium battery I bought from Anti-gravity batteries. The battery is the small size version without the additional protection circuitry, rather than the direct size-for-size replacement version. It came with handy foam pads to fill the space around it to bulk it out to the same size as the original battery. I didn’t weigh it, but I reckon I’ve saved at least 1kg? Added to the cast allow wheels, my bike should now be a good few kg’s lighter than stock. Here is a pic of it installed, fits nicely…
But I was surprised how big the 401’s stock battery is, it’s 10Ah, bigger than the 9.1Ah battery in hubby’s MT-09! It was also physically bigger than the stock batteries of my MT-07, and hubby’s F750GS!
For Australian owners you can get POWEROAD Lithium Motorcycle Battery PLFP-9R around $190 NZD which has higher CCA at 210 than stock YTX9-BS which is 135 cca, you probably can get away with the next smaller size battery which is lighter and cheaper but PLFP-9R this is what is recommended to replace YTX9-BS stock battery so I didnt want to risk it.
Back in the day when these bikes sat on dealer floors for one year +unsold, my battery died before I could buy the bike. The dealer said that Husqvarna warrantied the battery and recommended a WPS Firepower Lithium Ion battery be installed. They aren’t Expensive and it has worked well so far.