Allow for at least a 10 amp charging current available per battery on the buss. Higher buss charge current will
help accelerate the battery charge time. For example, if you are using a charger that has a max output of
100 amps source do not attempt to connect more than 10 batteries to it.
Charge batteries for 24-48 hours (see Step 5 below). Weekend charging of 64 hours (Friday 1600 to
Monday 0800) can be performed, but best to have someone check the system at least once per day to assure
proper operation (no excessive heat, gassing, leaking, proper voltage applied) and to determine whether
charge has been completed. Severely depleted batteries can take two to three days or longer to recharge. See
Theory of Operation (WP 0003) for charger operational lab observations.
Immediately remove any battery from buss that shows signs of excessive heat, gassing, leaking, or swelling
during charge stage. Battery should then be disposed of. Battery should be marked with a permanent marker
with date and statement "CHARGED, TESTED BAD"; then processed for disposal.
After removing a bad battery from the charger and before charging another battery, measure the Open Circuit
Voltage (OCV) of the batteries in the setup and select one with similar OCV + 1 VDC.
Batteries are finished when charge current (amp meter on charger) drops to < 1 amp per battery and holds
there for three hours. For example, if 12 batteries are on buss, then overall current should be < 12 amps.
END OF TASK
END OF WORK PACKAGE