3
2.
PRECAUTIONS
–
WARNING!
DO NOT CHARGE Lithium Polymer / ION batteries unattended. Ever!
USE POLARIZED CONNECTORS on the motor and battery to prevent reversal of leads.
Red to (+) and black to (-)
Although we have circuitry to protect the Xtrema, in certain situations
serious damage to Motor, speed controller, battery and the Xtrema may result. Make sure that
your connectors can handle the maximum amps your motor can draw. The Xtrema can safely
measure 50 amps continuous and up to 100 amps for short durations when used as a
Wattmeter.
DO NOT CHARGE
inside a
vehicle
DO NOT CHARGE
in
direct sunlight
DO NOT CHARGE
when ambient
temperature
is very
HIGH or LOW
.
DO NOT CHARGE
when Li battery pack is
hot
or
near flames
DO NOT USE an Automobile battery charger
for the input power source.
Use a regulated 12
to 13.8V DC supply or a 12 Volt Lead Acid battery capable of providing up to 20 amps
when charging at the maximum charge capacity. Your supply must maintain a minimum of
10.5V to a max of 15V to operate.
DO NOT CONNECT MULTIPLE EXTERNAL POWER SUPPLIES, METERS ETC. WITH
COMMON GROUNDS.
All three (-) Negative leads on the Xtrema are at slightly different ground
potentials. Make sure if you connect external equipment that they are electrically isolated from
each other.
Xtrema CASE may get
HOT
when charging at high current.