Q. How do I maintain my Shorai Battery?
Shorai™ batteries should be recharged whenever voltage drops to 13.15 volts, or sooner. When shipped lithium batteries have a very low 30% state of charge, so always fully charge your new Shorai battery before first use in the vehicle.
If you have a vintage, custom, or off-road vehicle which has NO draw on the battery when key is OFF, then you should only need to charge your Shorai™ battery once a year. However, most modern street bikes have a draw even when key is off, to support clock, computer, alarms, or other devices. This draw will eventually drain the battery, which is damaging and could void your warranty. So if you are not riding once a month or more, then you should charge the battery every month (or more, for rare bikes with very high key-off draw). Alternatively, you may disconnect the negative cable from the battery for storage, and charge once per year in that case.
“Smart” lead-acid chargers with automatic cutoff may be used for periodic charging, but will NOT work as a tender/maintainer and should be disconnected immediately after charge has finished. Older lead-acid chargers without automatic shut-off should never be used. Improper charging is dangerous and will void your warranty.
To see complete information on charging and recovering discharged batteries, CLICK HERE