Horizon FCJJ-20 Folheto

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20

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20

Insert the fuel cell into the rectangular slot located on the 

car chassis.

Place the Hydrogen outer storage cylinder into the round 

slot located on the right side of the chassis.

Place the Oxygen outer storage cylinder into the round slot 

located on the left side of the chassis.

Connect the pre-cut tubes firmly onto the 

inner storage cylinders short nozzle, 

connect the tubes opposite end to the upper 

nozzles located on the upper positions of 

both "H2" and "O2" sides of fuel cell shown 

here.  Make sure the tubes are connected 

correctly to the corresponding sides of the 

fuel cell.

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O

2

 side

O

2

 side

After 

water injection

bend the 

tube this way

1. The water levels do not drop when the gas outlet tubes on both sides of the 

fuel cell are unplugged.

Solution:

Check whether the holes on the wall of the inner cylinder are blocked. If so, turn 

the inner cylinder until water enters the holes and fills up the inner cylinder.

2. The reversible fuel cell does not produce hydrogen and/or oxygen.

Solution: 

a. Check whether the wires are appropriately connected, and whether there are 

any loose connections. The fuel cell could be completely destroyed if the red 

wire of the battery pack is connected to the black jack of the fuel cell.

b. Check whether the switch of the battery pack is in the “on” position.

3. The water electrolysis process slows down.

Solution: 

a. Add water to the oxygen side of the fuel cell and wait for about 5 minutes. 

b. Replace old AA batteries with new AA batteries inside the battery pack.

4. The car stops moving while there is still hydrogen left inside the tanks.

Solution:

a. Purge the gases and perform water electrolysis for 4-5 minutes. Unplug the 

hydrogen gas outlet tube and oxygen gas tubes to purge the gases. Perform 

water electrolysis again until the hydrogen tank is filled, and connect the motor 

to the fuel cell. If the problem persists, go to the next step.

b. Let the water electrolysis process last about 10 minutes to consume the 

residual water. To push water out of the fuel cell, purge the gases. Perform 

water electrolysis once more until the hydrogen tank is filled, then connect the 

motor to the fuel cell.

 Hydrocar

ASSEMBLY GUIDE

Remove the cap from 

each tube connected 

to the fuel cell. Using 

the syringe, inject distilled water 

into the Oxygen side of the fuel 

cell until the fuel cell is HALF 

filled with water.

WARNING: The polymer 

membrane is an important part 

of the proton exchange 

membrane (PEM) fuel cell, it 

should be prevented from 

drying out.

Connect the short tubes 

completely onto the short H2/

O2

 

intake nozzles located on the 

lower sections of both "H2" and 

"

O2

" sides of  the fuel cell.

Electrolysis of water should begin with 

oxygen and hydrogen being produced 

and stored in each storage tank.

Wait until the bubbles in the hydrogen 

tank start to escape from the inner 

storage cylinder located in the H2 

cylinder.

(Be patient, process can take 15–20min)

Make sure the switch on the battery box is in the "off" position 

before you place the batteries into the box.

WARNING: If the cable is short circuited the batteries inside could 

become hot and potentially cause burns, melting of parts, or 

create risk of fire.

Note: Battery’s energy may be consumed after 4-5 times of use. 

Hydrocar

H

2

 side

O

2

 side

Fuel Cell

Battery 

Pack

Remove the screw from battery box cover using a screw 

driver. Push and slide the cover to open the battery box. 

DO NOT to touch the cables when you open the cover. 

Place two AA batteries as indicated.

Push and slide the battery box cover to closed position 

and screw tightly into place using screw driver.

Use the scissors to cut two lengths of 4cm(1.5 inches) of rubber tubing from the long rubber tubing 

provided in the kit. 

Place the red pin into one of the 4cm tubes, and the black pin into the other 4cm tube. Cut the 

remaining long tube into two equal pieces.

Push and slide 

open the cover

AA Bat

ter

y

AA Batt

ery

Connect the red and black 

cables to the solar panel, 

and connect the other 

ends to the red and 

black sockets on the 

fuel cell.

Connect the red cable from the 

battery pack to the red socket on 

the fuel cell and connect the black 

cable to black socket.
Switch the battery pack to the "on" 

position.

  

For solar panel: remove the cables 

connecting the solar panel to the fuel cell.

Turn the switch on the battery box to “off” 

and remove the cables from the cable 

sockets located on the fuel cell. Keep the 

battery box switched to the "off"  position 

except during the time you are performing 

electrolysis.

Remove the red and black 

cables connected to the fuel 

cell in "step 10".

Insert the banana plug cables from the 

car’s motor into the red and black plugs on 

the fuel cell.

Make sure the colors of the plugs and 

cables are inserted into plug socket of the 

same color as in "step 10".

The motor should begin to power the car 

and cause it to start in motion. The 

estimated driving time on one charge is 

about 3 to 5 minutes.

Remove the screw 

from the cover

Hydrocar

AA batteries=2 Units

Water=100ml

Scissors

Battery operation instructions:

1. The removing and inserting of batteries is to be 

conducted by the adults only. Unscrew the screw holding 

the battery pack’s cover in place using a screw driver. Once 

the screw is removed open the battery pack and take out 

the batteries using your fingers. Do not use a metal 

object.When inserting the batteries make sure that you are 

doing so with the correct polarity (the positive end of the 

battery must match up with the “+” and the negative end of 

the battery must match up with the “-” indicated on the 

battery pack), close the battery pack and secure its cover by 

tightening the screw with a screw driver.

2. Non-rechargeable batteries are not to be recharged.

3. Different types of batteries such as rechargable, alkline 

and standard batteries or new and used batteries are not to 

be mixed and should be used separately.

4. The battery pack cables are not to be inserted into an AC 

socket.

5. The supply terminals of the battery pack are not to be 

short-circuited.

6. The two spare red&black cables are not to be inserted 

into an AC socket.

7. Exhausted batteries are to be removed from the battery pack.

Warning

To avoid the risk of property damage, serious injury or 

death:
This kit should only be used by persons 12 years old 

and up, and only under the supervision of adults who 

have familiarized themselves with the safety measures 

described in the kit. Keep small children and animals 

away, as it contains small parts that could be 

swallowed. Read the instructions before use and have 

them ready for reference.

ASSEMBLY GUIDE

What you need:

14):  Disconnect the small plugs from the tubes 

connected to the nozzles on the reversible fuel cell. 

This will allow water into the inner cylinders to replace 

the gasses and reset water levels to “0” line. Re-insert 

the plugs into the tubes and repeat electrolysis again.

Distilled water

First add water up to the "0" line.

Place inner containers into outer cylinders minding that the gaps are not blocked by inner plastic 

rims. Make sure the water is still level to the “0” line. If not, remove some water with the syringe. 

Then connect the tubing to the inner containers. Make sure there is no air trapped inside the inner 

containers and the water is level to the "0" line.

FCJJ-20_Hydrocar_AG_V1.1_EN

309710074