From Unofficial Zero Manual
Generally, refer to the Charger Operation section, but for battery concerns, the following are relevant:
- If you run your bike to empty, do your best to give it at least a partial charge (ideally to 40-50%) as soon as you can.
- Charge and discharge your bike freely and at your convenience.
- Don't worry about keeping the bike topped up, like standard car batteries.
- Don't feel you have to run the bike to empty before re-charging; it's fine to charge if you've only used 10%, for example.
- If you can afford extra chargers to reduce charging time, Zero's fast chargers won't hurt the batteries.
- Use the bike as much as you can. If you aren't using it for a regular commute or aren't lucky enough to have the freedom to ride regularly then it will work out a lot cheaper to own a conventional motorbike.
- Zero's engineers have done the work to ensure a long service life from their battery packs and have backed it up with a five year warranty with the 2014 model range onwards. That should be enough to drop any anxiety you may have and just concentrate on enjoying the bike.