rapidly become very popular for model
purposes due to its low weight and high
energy density.
The charging process is the same for all
Lithium cell types, but the charge termina-
tion voltage varies according to the nominal
cell voltage; this parameter can therefore be
selected in the Infinity 2 Li’s set-up menu.
In general terms the following specification
applies to all Li-Poly batteries:
Charge current:
1 C, i.e. capacity value = charge current
- Example: Li-Poly cell of 1500 mAh capa-
city: 1 C = 1500 mA (= 1.5 A) charge cur-
rent
Discharge current:
3 - 5 C, peak 10 C
Final charge voltage:
Cells of 3.6 V nominal voltage = 4.1 Volt
Cells of 3.7 V nominal voltage = 4.2 Volt
Final discharge voltage:
Cells of 3.6 V nominal voltage = 2.4 Volt
Cells of 3.7 V nominal voltage = 2.5 Volt
Important note:
If the stated limits for final charge or disch-
arge voltage are exceeded, the cell will be
damaged; the damage takes the form of per-
manent capacity loss. If the limit values are
exceeded for a protracted period, the cell
will be ruined, and may explode and start a
fire.
Effective cell life:
The theoretical useful life of a cell when
discharged at low discharge currents is
around 500 charge/discharge cycles. Howe-
ver, if the discharge current is relatively high -
around 3-5 C - the cell’s useful life is reduced
to around 300 cycles. If even higher disch-
arge currents are used, the cycle life suffers
a further significant reduction.
Order No.
8294Li/D
Supplementary operating instructions
POWER PEAK Infinity 2 LI
The software of the POWER PEAK Infinity 2
battery charger has been upgraded by the
addition of the following functions. Its title
now bears the suffix Li.
- The unit is capable of charging various
types of Lithium-Ion batteries. It can
charge up to five Lithium cells wired in
series, with a maximum current of 5 Amps.
- The signal tone of the piezo buzzer can
now be selected from five different series
of sounds.
- A special automatic mode has been added
which ensures optimum charging of slow-
fly flight packs and small, low-capacity
receiver batteries.
- The Tx-Rx charge output now features
automatic Delta-Peak charge termination.
To avoid damage please be sure to read
through these instructions carefully before
using the charger.
General information on Lithium batteries
There are various types of Lithium batteries:
1. Lithium-Ion batteries containing fluid elect-
rolyte, and featuring a nominal voltage of
3.6 Volts. This is the first generation of
Lithium cells, and is not often used for
modelling applications.
2. Lithium-Ion batteries containing fluid elect-
rolyte, and featuring a nominal voltage of
3.7 Volts. This is the second generation of
Lithium cell, and is housed in a metal can.
3. Lithium-Ion-Polymer batteries containing
gel-form electrolyte, and featuring a nomi-
nal voltage of 3.7 Volts. This is the current
generation of Lithium cell, and they have
also become known as Li-Poly batteries.
The gel electrolyte results in a reduced
pressure build-up in the cell during char-
ging and discharging, for which reason a
foil housing is adequate. This cell has
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