USER MANUAL
OPIA
LAST UPDATED: 2/12/2016
20
This section will detail what a battery is and its features and how to maintain
good battery health over the batteries lifetime. An electric bike battery contains
multiple battery cells combined in series and in parallel to make up the Voltage
(V) and capacity (Ah) respectively. A common battery configuration is 10S4P
which means 10 cells in series and 4 in parallel which makes a 36V, 10.4Ah
(374.4Wh) battery. That
’
s 40 battery cells in total! As you might imagine
maintaining the health of each of these individual cells can be a difficult
proposition. Though fortunately there are built in electronic systems to make this
an automatic and simple process.
The smart battery charger will ensure that the cells are charged to maximum
capacity, without overcharging the battery, which could cause damage to the cells
and possibly even fire. Our chargers are designed to stop charging when the
battery is fully charged, though we still would recommend observation and
charging in a fire retardant area to ensure nothing can go wrong.
Over time each cell bank can get out of balance, which means that other cell
banks have to do more work to compensate for the lose in balance. The Battery
Management System
’
s (BMS) job is to ensure that each of those cells are
balanced and healthy. Each cell is balance regularly automatically by the BMS
when the cells become out of balance.
Each cell is rated for a number of cycles. A cycle is a discharge and full charge.
500 cycles is a common amount of cycles for a good quality cell. This means that
if you use it each day the battery should last 1.37 years before replacement is
necessary.
BATTERY INFORMATION
