HITEC X1 MF, Instruction Manual

Page: 16 / 39

LITHIUM BATTERY (LiPo/LiFe/LiIon) PROGRAM
15
X1 MF
CHARGING LITHIUM BATTERIES IN BALANCE MODE
-
-
+
+
Press
Dial
Mode
Stop
> 3 seconds
SELECT SELECT
The X1 MF Lithium programs are only suitable for charging and
discharging Lithium batteries with a nominal voltage of 3.7V, 3.6V and
3.3V per cell. Lithium charge termination methodology is referred to as
CC/CV (Constant Current, Constant Voltage). Lithium charging begins
by delivering a constant current to the battery as specified in the setup
parameters. Once the charger detects increased resistance and a
reduced voltage increase, it begins to reduce the current and closely
monitors the pack’s voltage. When voltage levels have reached the
maximum standard and hold steady, the charge process terminates.
The maximum voltage for each cell chemistry is the key to the charging
process, they are 4.2V for LiPo, 3.6V for LiFe, and 4.1V for Lilon. The
charging current and the nominal cell voltage is most critical when
charging Lithium cells as this is what drives the intelligent charging
process.
NEVER use NiMH, NiCd, or Pb charge parameters on a
Lithium cell. These charging methods cannot properly determine
cutoff and will over charge and explode a Lithium battery!!
For Lithium packs containing more than one cell, balance charging is the
preferred method. Balance charging actually monitors and adjusts each
individual cell’s voltage so that each cell is at maximum charge when the
process ends. Balanced packs deliver more consistent current and
voltage as the pack is drained. Balance charging also provides
insurance against over-charging since the nominal pack voltage is read
from each cells individual voltage as opposed to the main leads. If one
or two cells are lower than the others, non-balanced charging may drive
the pack to a calculated total voltage for cutoff while over-charging the
high cells and undercharging the low cells.
Top Line (left to right): Selected Battery Type
and Charge Mode
Bottom Line (left to right): Charging Rate and
Pack Nominal Voltage/Cell Count
Adjust the parameters, then press and hold
the dial for 3 seconds to start the process.