Curtis enAble 40 Manual page 61

Curtis enAble 40 Manual,
®
If you want to use the partial charge feature:
5.c Based on the Amp Hour rating of the batteries and the charger's aver-
age amp output, initially calculate and set the Charge Factor using this
formula:
Charge Factor = 10 * (Battery amp-hrs / Charger amps).
5.d Starting with the dead battery from Step 4, plug in the charger. After
10 minutes of charging, measure the battery voltage with a meter. Set
the Start Charge Voltage parameter to this value.
5.e The Charge Factor is basically a charge timer. A setting of 10 = 1 hour.
Using the Charge Factor setting, calculate the time it should take to reach
50% charge (50% time = Charge Factor / 20). After the calculated 50%
time, stop the charger and turn on the enAble 40 system. Plug in the
1311 and read the BDI% off the Monitor menu.
5.f Using the BDI% displayed on the 1311, adjust the Charge Factor using
this formula:
New Charge Factor = Original Charge Factor * BDI reading * 2,
with the BDI% being expressed decimally (e.g., 40% = 0.40).
If the BDI reading was too low, the new Charge Factor will be reduced
and thus speed up the charge calculation. If the BDI reading was too
high, the charge calculation is too fast and the Charge Factor will be
increased by this formula.
Step 6. Rerun and Verify
This procedure will give good initial settings for the BDI algorithm. You should
test these settings under various conditions to verify that they provide an ac-
ceptable indication of the battery state of charge. The settings can be fine tuned
by repeating the entire procedure.
It is important to note that battery age and driving conditions (hilliness,
driving surface, weight of user) will all affect the accuracy of the BDI measure-
ment.
Rev. E
APPENDIX A: BDI SETUP
A-3