Volusiano said:
The owner manual says that "to maximize the life of your battery, and to ensure that your bike is always ready for use, recharge the battery as soon as possible after every use. A lithium ion battery left in a discharged condition will deteriorate much faster than a fully charged battery." I would consider that 50% SOC is a discharged condition. While not a "DEEP" discharged condition, it's still a discharged condition nevertheless.
one of the BIGGEST gripes i have with a LOT OF new EV products is the perpetual BS they tell their customers to insure a "good" customer satisfaction level.
the statement you quoted is from that manufacturer and based solely on the limited range those batteries will provide UNDER ANY CIRCUMSTANCES and is not what the very same battery manufacturers would recommend.
i had a Zenn, and pretty much got the exact same warning. after extensive battery issues, i skipped Zenn tech support (which was nearly clueless) and called the battery manufacturer. after i READ to them what Zenn recommended, they straightened me out on proper battery management (after they stopped laughing that is!!)