E-Wheels EW-36 Owner's Manual page 23

The electric bike is powered by four 12V/20Ah batteries
wired in series to provide 48 volts of potential. All
batteries charge simultaneously. You should charge your
EW-36/EW-66 after each ride. You should charge your
EW-36/EW-66 if it has not been used for 30 days or more.
Do not place the battery near heat or fire. Do not expose
the chargers to water.
IMPORTANT
WARNING
22
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