User Manual

Section 4 - Protecting Your Battery
Lithium batteries cannot be protected effectively by monitoring voltage due to their ability to maintain
a higher voltage for much longer than AGM or flooded/sealed batteries.
“State of Charge” (SOC%) percentage is the most accurate and effective method of disconnecting loads
from the battery - this requires a battery monitor which uses a “shunt” to measure the current going into
(Charging) and coming out of (Discharging) the battery.
Example;
200 Amp Battery Fully Charged State of Charge = 100%
50 Amps used State of Charge = 75%
100 Amps used State of Charge = 50%
It is recommended that Lithium batteries not be discharged below 20% State of Charge or the battery
life may be shortened.
As an added layer of protection, the Enerdrive B-TEC Lithium Battery also has a built-in low voltage
disconnect circuit. If this occurs, please refer to
Section 5 - Restarting Your Battery.
Page 7
Enerdrive B-TEC EPL-200BT-12V-G2 Manual (Rev. 2.0)