metacycle owner resource

Cold-weather charging

When it's safe to charge in the cold, and how to charge the battery in or out of the bike.

system
battery & charging
difficulty
time
not yet known
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community-reported
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safety

Do not charge when the battery is cold. Charging lithium cells near or below freezing (32 °F / 0 °C) can permanently damage them.

safety

The charger plugs into mains power (120/240 VAC) and outputs 84 V DC. Keep the connectors dry.

01Tools you’ll needall tools →

None listed.

02Parts

03Steps

The stock charger fills the 4 kWh pack in about 5 hours. The one firm rule for cold weather: never charge a battery that’s near or below freezing.

Check the battery’s temperature first. If the bike or battery has been somewhere at or below freezing, don’t charge yet. TODO: how long to let a cold pack warm up, and whether the BMS blocks cold charging, aren’t documented. Share what you know.

If you’re charging the battery out of the bike, attach the charge-adapter cord to the battery.

Plug the cable with the blue end into the Metacycle (or into the adapter cord).

Fit the right mains plug to the charger (US NEMA 5-15 or EU Type C).

Plug the charger into the wall. If its light blinks red-red-green, that’s a communication error, but it still charges.

When charging is done, unplug the charger from the wall outlet first.

Wait for the click from the Metacycle (it should come fairly soon), then disconnect the charger from the bike or the battery adapter.

Tick steps as you go. Ticks stay on this device only.