E T X S E R I E S L I T H I U M B A T T E R I E S
24
The ETX Lithium battery is compatible with
most “modern” lead
-acid battery chargers or
4cell LiFePO4 battery chargers.
By “modern” we mean a charger that automatically turns
off when the battery is fully charged, a charger with a micro-processor, or a charger with
multiple mode charging.
The “full charge” voltage for the ETX Lithium battery is 13.3V or
higher. Some lead-acid battery trickle
charger’s
maintenance mode voltage can be below
13.3V, which is too low for a lithium battery. For example, the Battery Tender JR has a
maintenance mode voltage of 13.3V which is compatible, whereas the original Battery
Tender has a maintenance mode voltage of 13.2V which is too low for a lithium battery.
If the battery has been over-
discharged and “disconnected”, the voltage at the battery
terminal should be near zero volts if the battery still has a load on it. If the battery is
disconnected from the load it will automatically reconnect and the terminal voltage will be
between 9-12V (remove the load by removing the positive or negative cables from the
battery). In this case, simply connect the battery to a charger to restore charge (charge with
2A for 20-30 minutes), and then re-check the voltage. If the voltage is 12.8V or greater, the
battery should be ok and can be fully charged. If the battery that displays zero volts, check
our website for a list of compatible chargers, and specifically chargers that will work for
recharging an “over
-
discharged” battery (referred to as a BMS reset) for which the BMS’s
over-
discharge protection has activated and won’t reset automatically when the load is
removed.
Never charge a faulty battery (a battery that will not accept a charge or hold a
charge).
Never use the de-sulfate setting on your charger.
Be sure the charger’s output
voltage level does not exceed 15V. If the charger does not display the voltage reading, then
use a voltmeter to check the voltage while charging.
If the battery gets hot while charging, discontinue charging and use.
Do not charge battery in temperatures above 140 degrees F (60C), or in direct
sunlight.
When charging a battery, place it on a non-flammable surface, and remove any
flammable items nearby.
For maximum battery and vehicle starting system life, do not crank an engine
for more than 10 seconds within any 1 minute period.
