Then there is the low self-discharge properties of lithium-based batteries. When sitting static batteries lose some of their charge, and as more time goes by, the higher loss from a lead-acid can be significant. If you haven’t ridden your bike in four months, a lead-acid could have lost up to 15 percent of its total charge—that’s if there is no draw on the battery. The Shorai on the other hand loses about 1 percent per month, without any draw, so storage life is much better. If you are storing your bike over the winder, just disconnect the negative terminal and you should be good to go in the spring.