Cycle Analyst V3.1 User Manual
Rev 1.0
6.3.2 Set Your Capacity
Here you input the approximate amp-hours of your
battery pack in order to help the battery SOC icon
remain accurate at tracking changes during high
discharge currents. The value does not need to be exact as the battery icon will
always gradually readjust itself based on the voltage reading.
6.3.3 Set Your Series Cell Count
The nominal battery voltage is determined by the
number of series cells in your pack. For lithium
batteries each cell is about 3.7 volts, so a 36 volt
pack has 10 cells in series. Lead cells are nominally 2.0V, so it takes 18 cells in
series to make a 36V lead battery. And NiMH cells are just 1.2 volts each, so 30
of them are needed in series to make a 36V pack.
Most ebike batteries are configured in nominal 24V, 36V, or 48V modules. The
following table shows the typical cell count for these nominal pack voltages, but it
is increasingly common to see lithium packs not made in 12V multiples.
Table 5: # Cells Setting for Common Pack Voltages (brackets used occasionally)
6.3.4 Low Voltage Cutoff
This optional feature allows the Cycle Analyst to automatically scale back power
as the battery approaches a low voltage cutoff point. While lithium batteries have
a Battery Management circuit (BMS) that will shut the battery off to prevent
overdischarge, the experience for the rider is an abrupt loss of power with no
warning. If the Cycle Analyst low voltage cutoff is set 1-2 volts higher than the
BMS shutoff voltage, you'll have a gradual reduction in power instead, and will
usually get more amp-hours and range from the pack.
When the CA is at the low voltage rollback mode, you will see the 'V' character
flashing on the main display, and a capital 'V' on the diagnostics screen.
16
To Next Page
Loading...
Need help?
General