KickAss KADCDC20A-CAR User Manual page 13

Lithium BMS Sleep Mode & Recovery Feature:
Most lithium batteries are built with a Battery Management System (BMS) inside to
protect the battery from over charging, over discharging and extreme temperature
changes.
One of the key functions of the BMS is to protect your battery by internally disconnecting
the load¹ when voltage drops below specific parameters, this will then result in the battery
entering into a "sleep" mode.
¹ (Load includes any accessories and/or device/s drawing charge from the battery. Eg:
fridges, pumps, food sealers, etc)
The KickAss DCDC MPPT Solar Battery Controller has a lithium battery recovery
function. This function has been designed to recover lithium batteries from a sleep mode.
Lithium Battery Recovery Mode Procedure
First disconnect any load connected to the lithium battery. Secondly connect Alternator
Input or Solar Input to the KickAss DCDC Charger with MPPT Solar Controller. Thirdly
connect the output from the DCDC charger to the lithium battery. When the DCDC
Charger with MPPT Solar Controller input charging voltage reaches the relevant cut in
voltage, the DCDC Charger with MPPT Solar Controller will automatically try to activate
the battery every minute. When DCDC Charger with MPPT Solar Controller attempts to
activate the battery, if a open-circuit or short-circuit error is detected, the DCDC Charger
with MPPT Solar Controller will enter standby mode until the next activation attempt. If
the activation attempt is successful, DCDC Charger with MPPT Solar Controller will
initiate the regular three stage charging sequence.
Once the DCDC Charger with MPPT Solar Controller indicates the battery has reach the
FLOAT charge state, the battery has been fully recovered and loads reconnected.
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