Operation Parameters
Floating/equalizing charge voltage
Floating (25
℃
): 2.25V/cell
Equalizing (25
℃
): 2.40V/cell
Temperature compensation coefficient: -3.5mv/cell/
℃
Charge current-limiting valve: charge current-limiting valve range is 0.1C
10
-0.4C
10
According to the grid condition of the BTS, we divided the grid conditions into five types,
see the table 3-1 below:
Table 3-1 Grid conditions definition
For the Type I and Type II, the charge current-limiting value is 0.10C
10
, for Type III and Type IV,
the charge current-limiting value is 0.2C
10
and the maximum charge current shall not exceed
0.4C
10
, in case the grid condition is type V, contact our technical team for assistance.
Factors Influencing Capacity
Quantity of electricity battery discharge under certain condition is called battery capacity, symbol is
“C”, normal unit is Ampere Hour, in short is Ah. Usually discharge rate is indicated through the
suffix of “C”, such as C10 means capacity at 10 hours discharge rate. C3 means capacity at 3
hours discharge rate.
Battery capacity consists both of nominal capacity and actual capacity, for nominal capacities of
the FTC series battery please refer to Table 1-1. Actual capacity is the real quantity of electricity
battery discharge under certain condition, it equals to discharge current multiplied by discharge
time, the unit is Ah.
Battery capacity is directly related to discharge current, end voltage and discharge temperature. In
general, the smaller discharge current, the lower end voltage, the higher temperature will cause
larger discharge capacity.
Type I: Total power failure time per month <10 hours
Type II: Total power failure time per week <10 hours
Type III: Power failure time every day ≥2hours, but <4 hours
Type IV: Power failure time every day ≥4hours, but <8 hours
Type V: (Including no grid): Power failure time every day ≥8hours
Operati
on
and
m
ai
ntenan
ce
08
