High Voltage Battery - Honda CLARITY Fuel Cell 2021 Owner's Manual

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High Voltage Battery

Because electricity generated by the fuel cells and through regenerative braking
recharges the High Voltage battery, the battery does not need to be recharged from
an outside source; however, the High Voltage battery gradually discharges when the
vehicle is not in use. If allowed to discharge too much, the battery may become
damaged.
If your vehicle is parked for an extended period of time, during storage for example,
periodically recharge the battery to maintain sufficient charge levels. At least once
every three months, turn on the power system, and keep it on for more than 30
minutes to allow the battery to recharge.
Excessive heat can also damage the battery. On hot, sunny days, try to avoid parking
your vehicle under direct sunlight.
If the High Voltage battery becomes fully discharged or damaged and you are
unable to start the FC system as a result, consult an authorized Honda Clarity Fuel
Cell dealer.
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