Rev. 1.3
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 eVault 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-3)
7) Turn on battery charger and charge at ~10-30A until voltage at the
terminal’s registers ~47V
8) At ~46-48V your charge controller should be able to resume charging
4
– REPLACING THE BMS
Before attempting to replace the BMS, make sure the battery DC breaker is OFF and the battery itself is OFF
by checking that the green and red lights below the screen are both OFF. Take care to not short battery
internals with metal tools. If possible, use only insulated gloves once inside the compartment.
1) Using a Philips-head screwdriver, remove the six (6) screws on the circuit board compartment panel
(Appendix C-1)
2) Set the top plate aside and inspect interior. The BMS is located on the left side, facing the front of the
battery. See Appendix C-2.
3) Locate and unplug the BMS power supply. It is a
RED
cable connected directly to the board and
covered by silicone sealant. Disconnect this cable and cut the zip-tie. (Appendix C-3).
4) Disconnect all the wire harnesses from the BMS. The white silicone sealant can be removed by gently
scraping with a razor or flat-head screwdriver, if necessary. Then remove the four Phillips screws on
each corner of the BMS (Appendix C-4)
5) Once the BMS is removed, follow these steps in reverse with the new BMS. For a list/description of
each port, see Appendix C-5.
6) Turn on the BMS by pressing and holding the front push-button until the green light turns on and verify
there are no errors, then re-commission the battery.
5
– FURTHER HELP
with any concerns or questions.
