Rev. 1.0
505 Keystone Rd, Southampton, PA 18966, USA
.
(877) 497 6937
.
.
www.fortresspower.com
2
3
– TRICKLE-CHARGING THE BATTERY
Once the battery covers have been removed, it is now possible to bypass the BMS and charge the cells
directly.
3A
– CONNECTING THE LEADS AND CHARGING
We will now connect the charger leads.
1) The standard color designation is
BLACK for NEGATIVE
(--)
and
RED for POSITIVE (+)
a. Failure to keep these consistent can lead to personal injury and/or battery shortage
2) Make sure the battery terminals are disconnected
3) Make sure the battery charger is OFF
4) Make sure the eFlex BMS is turned OFF
5) Connect the NEGATIVE (BLACK) lead clamp of the charger to the
NEGATIVE
battery lead (Appendix
B-2)
6) Connect the POSITIVE (RED) lead clamp of the charger to the
POSITIVE
battery lead (Appendix B-2)
7) Turn on battery charger and charge at ~3-10A until voltage at the terminals registers ~47V
8) Do not measure cell voltage while battery is still receiving charge as it will not be accurate.
9) At ~46-48V your charge controller should be able to resume charging
5
– FURTHER HELP
with any concerns or questions.
