5. Additional Details
5.1 Operation In Cold Lithium batteries have a noticeable
o
performance degradation at low temperatures (0 C and below). The
available capacity is reduced and the voltage will sag more under
load. There is no harm in running the battery at cold temperatures,
but we recommend storing the battery indoors so that it starts off in
a warmer state and thus can deliver better performance on the bike.
As well, you should not charge the battery at sub-zero
temperatures, as the optimum charge voltage for a cold battery is
less than a pack at room temperatures, and so you risk
overcharging the pack. For instance, a LiMn battery charged to
42V in the freezing cold may rise to 44V when warmed up.
5.2 Operation in Wet Weather The solid eZee plastic
enclosure provides good protection of the cells and circuitry from
incidental water spray. However, the seams are not fully sealed and
frequent exposure to rain and wet conditions can allow water
ingress into the casing. Over time this can corrode the cell terminals
and lead to erratic behaviour of the BMS circuitry. We suggest
covering the battery with a bag when exposed to water spray.
5.3 Flying / Travelling Air travel regulations prohibit flying
on passenger craft with lithium battery packs that have over 160
watt-hours of capacity, unless packaged to IATA standards as Class
9 dangerous goods. If you plan to travel with your ebike, you will
likely need to ship the pack separately to your destination using an
appropriate courier service.
5.4 Self Discharge in Storage Although lithium cells have
very low self discharge, the BMS protection circuit inside the battery
pack does draw a little current at all times. This BMS current is
small, but if the battery is already flat when initially stored, it will only
take a few weeks or months for this small current to further drain
the cells to the permanent shutdown threshold of the BMS, at which
point the pack can no longer be charged or discharged.
