The Channel Bridge mode lets the H4 charge
this Thunder Power 3S 2,700 mAh G8 pack at
16 amps, slightly more than 2 amps below its
recommended maximum charge rate.
full 240 watts of charging power and
20 watts discharge. You also have the
option to bridge channel pairs on both
sides, or just one, as your charging needs
Another great feature of the H4 is its
battery discard mode. Although other
Lithium chargers may offer a storage
charge setting, the H4 also allows you
to safely bring a battery down to near
zero voltage for safe disposal. As far as I
know, this is an industry first and saves
hassling with multiday soaks in buckets
of saltwater. I will look at both of these
features in more detail.
The H4 power input leads are
made from high-quality flexible wire
and equipped with 4mm male bullet
connectors. These connectors will mate
with most AC/DC power supplies
today. For charging in the field, Hitec
also includes terminal clips with integral
4mm female connectors for attaching
the H4 directly to a car battery.
Hitec thoughtfully packages a number
of cables and adapters with the H4 to
get you started. These cables and more
are also available separately so you can
mix and match as needed. In addition
to the power lead battery clamps, the
H4 comes with four charge cables, each
equipped with a different, common
connector. These include a female servo
connector for receiver batteries, as well
as leads with two-pin Deans Ultra,
Tamiya, and Traxxas connectors.
Hitec includes three adapters to
accommodate the most common
balancing connectors in use. With this
collection of cables you will likely be
able to use the H4 right out of the
box, and know exactly what you will
want to order to service your entire
battery collection. Additional optional
balancing adapters, charge connectors,
and temperature probes are also
There is no power switch on the H4,
so as soon as you connect it to a power
source it comes to life. You can connect
any needed charge and balancing leads
before or after powering up. When the
charger is active, connect your battery
and select the appropriate channel
button to program the charger.
I recommend that you open the
manual and walk through a few sample
setups for each battery’s chemistry.
The H4 menu architecture is readily
accessible, but many of us have found
frustration in the past trying to figure
out how to think like a programmer.
The H4 offers welcome relief from
that situation. Quite simply, the H4
interface is easy to use and works in a
way that makes sense. It only took me a
few moments with the H4 and manual
together to realize that using this charger
would be a joy, despite its extensive
When charging a Lithium battery,
the H4 calculates the cell count based
on input from the balancing port and
compares it with your settings. This
allows a final opportunity for you to
confirm your settings before you begin
This checking feature can be disabled,
so that the charge/discharge cycle begins
(Data represents the capability of individual charger ports
except for input power, dimensions, and weight.)
Input voltage range: 11-18 volts direct current
(VDC) with 30- to 40-amp
Cell count: One to six LiPo/Li-Ion/LiFe
cells; one to 15 NiCd/NiMH
cells; one to 12 lead-acid
Charge current range: 0.1 to 8.0 amps ( 120
watts maximum; 240 watts
with Channel Bridge)
Discharge current range: 0.1 to 2.0 amps ( 10
watts maximum; 20 watts
with Channel Bridge)
Charge detection: NiCd/NiMH negative Delta
Peak method; Lithium and
lead acid automatic
Lithium balancing current drain: 300 mAh per
Dimensions: 8.07 x 6. 42 x 2.05 inches
Net weight: 2. 65 pounds
Street price: $274.99
• Lithium disposal discharge mode.
• Channel Bridge feature.
• Ease of use.
• Flexible programming.
• Abundant information on large display.
• Durable, stylish aluminum case.
• Discharge power limited to 10 watts per
channel and 20 watts with Channel Bridge.
AT A GLANCE ...
The left side of the H4 has outputs for charging, balancing, and temperature monitoring for
two of the four channels. The center port labeled HPP lets you update the firmware. The right
side has the same outputs and no HPP port.
66 Model Aviation APRIL 2014