PowerTech HB8506 Instruction Manual page 12

DC-DC CHARGER GUIDE:
Choosing the battery type:
The default battery setting is AGM.
When the auxiliary battery is connected, press and hold the mode button for
5 seconds or until the battery light starts flashing. Then select from either GEL,
AGM,WET,CALCIUM or LITHIUM and wait for the battery light to stop flashing.
When this occurs, your selection is saved.
Charging Stage Profile
Stage Description
GEL
Bulk 100% Current
until 14.1V
Constant 14.1V
Absorption
Until 3.8A
Float 13.7V at 100% Current Max
Begins after a continuous float stage of 10 days and pulses power through the battery
using the same current and voltage as the absorption stage to maintain charge.
Pulse During this PULSE time, if the voltage of the auxiliaty battery drops below 12.6V, the
charger will restart the charge cycle at Bulk. Once pulse is completed, the charger
reverts to float stage.
NOTE: When in the float stage, the battery is fully charged. At the "float stage",
when the battery voltage drops to 12.7 volts, the charger will restart charging
from the "bulk" stage.
Lithium BMS Sleep Mode & Recovery Feature
Most lithium batteries are built with a Battery Management System (BMS) inside to
protect the battery from overcharging, overdischarging and extreme temperature
changes. One of the key functions of the BMS is to protect your battery by
internally disconnecting the load' when voltage drops below specific parameters,
this will then result in the battery entering a "sleep" mode. 1 (Load includes any
accessories and/or device(s) drawing charge from the battery. (Eg. fridges, pumps,
food sealers, etc) The DC-DC MPPT Solar Battery Charger has a lithium battery
recovery function. This function has been designed to recover lithium batteries
from sleep mode.
Lithium Battery Sleep Mode Indication:
When the lithium battery has entered sleep mode, the charger will show fault
codes for output open circuit, until all loads' are disconnected and a sufficient
charge source is connected.
AGM WET
100% Current 100% Current
until 14.4V until 14.7V
Constant 14.4V Constant 14.7V
Until 3.8A Until 3.8A
12
Calcium Lithium
100% Current 100% Current
until 15.4V until 14.4V
Constant 15.4V Constant 14.4V
Until 3.8A Until 3.8A