6
PowerBox-Systems
− World Leaders in RC Power Supply Systems
CAUTION
: It is absolutely essential to set the correct final charge vol
-
tage (cut-off voltage)! If you charge these batteries with the cut-off
voltage set too high, the result could be a fire!
PowerPak x2
batteries are charged at a nominal voltage of 7.4 V, correspon
-
ding to a final charge voltage of 8.4 V.
The optimum charge rate for the
ECO
version is 0.5C. If you are using a
Power-
Pak 2.5
this means a charge current of 1.25 A. This rate of charge guarantees
a long useful life for the battery. However, it is permissible to charge at 1C (2.5
A) in exceptional cases.
Connect the
PowerPak
to your battery charger using the charge lead (Order
No. 2505) which is available separately. Check that polarity is correct at the
charger. The Uni connector on the
PowerPak
can be plugged in either way
round, as the positive (+) terminal is always in the centre.
CAUTION:
Important information regarding
PowerBox
battery backers
and other dual power supplies:
1)
All
dual power supply units currently available commercially control
the charge current on the negative side.
2)
All
dual power supply units currently available commercially feature
a permanent connection between the negative terminals of the two
batteries.
These two facts make it impossible to charge two batteries simulta-
neously while they are plugged into a dual power supply unit! The follo-
wing options are available:
a) Disconnect one of the two batteries from the dual power supply unit
for charging
b) Charge the batteries in turn, i.e. one after the other
If you ignore the points stated above, the short-circuit situation may da-
mage the battery charger! These points do not apply to the
PRO
version
if the integral charge circuit is used.
