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Step 4: Connecting the Flexi cable to a charge controller (if supplied)

4.1   A charge controller will be necessary  

for STPVF020 and above and if using  

the 010 on a battery smaller in capacity  

than 70Ah.

4.2   Position the charge controller as  

close as possible to the battery  

(must be a dry location).

4.3   Measure the distance between your 

battery terminals and the charge controller.

4.4   Cut the measured length of cable from the 4m cable fitted to the panel  

(or use any DC, 2 core cable at 1mm diameter for the 10w or 20w Flexi 

and 1.5mm for the 60w and 80w Flexi*) so that there is sufficient cable 

length from the Flexi panel to reach the charge controller. 

 

* Additional cable can be supplied by Solar Technology International – 

www.solartechnology.co.uk

4.5   Now connect the cable end fixed to the Flexi to the charge controller. 

Strip back 20mm of the black outer sheath of the cable end to be 

connected to the charge controller.

4.6   Strip back 20mm of the black and red inner sheaths to reveal the bare 

cable. Crimp the supplied ring terminals to the cable end and attach the 

cable to terminals G of the charge controller, ensuring the positive and 

negative polarity is observed).

4.7   Using the cut section of cable as described in 4.4, attach one end to the 

terminals H in the same way as described in 4.6.

Step 5: Fitting the fuse

5.1  The fuse is fitted on the positive cable (red) on the cable section 

between the charge controller and the battery or if fitting the 10wp Flexi 

without a charge controller direct to the battery. Fit the fuse on the 

positive cable as close to the battery as possible.

5.2   Cut the red cable and strip 5mm of the red insulation from both the  

cut ends. Twist the bare wire ends tightly. Fit into the screw terminals  

on each of the fuse holder pieces. 

Step 6: Connecting to the battery 

6.1   If the STPVF010 has been selected, the crocodile clips can be 

fixeddirectly to the terminals of a 12v battery (greater in capacity than 

70Ah) ensuring that the correct polarity is observed. If a smaller battery 

is to be used, purchase a charge controller and follow Step 4. This 

entails checking the battery at regular intervals with a digital voltmeter 

and when the battery is showing a volt reading of 14v or above, 

disconnecting the Flexi PV until the battery level has reduced.

6.2   For the STPVF020 and above (where a charge controller is being used), 

take the cable end coming from the charge controller, strip the red 

and black insulation (6cm) from the inner cable ends, twist the bare 

wire, wrap around the battery terminals and fix into position using your 

battery clamps. Some battery clamps have connection screws fitted, in 

which case, strip 20mm of cable from the red and black cable, crimp the 

supplied ring terminals and connect to the battery clamp screws.

6.3   When connecting to a battery always observe correct polarity.
6.4   If a second battery is being connected to the solar system see the 

instructions contained within the charge controller.

 

NOTE: RED = POSITIVE (+)    BLACK = NEGATIVE (–)

Step 7: Testing the system

7.1   Testing can also be completed with a digital volt meter. Solar 

Technology International can supply special test instructions if required 

– please email [email protected]

Options

Expanding the Flexi PV system

8.1   If multiple panels will be joined to form a mini solar array, please contact 

[email protected] for a document titled ‘Expanding a solar 

system’ or call the Tech Help Desk on 01684 774000.

Connecting an inverter into the system

9.1   Should you require your solar system to power 240V appliances, you 

will need to connect an inverter. Select an inverter power (measured in 

watts) that is most appropriate for the power of your appliances (also 

measured in watts). The inverter will be ideally positioned reasonably 

close to the battery. Most inverters come with pre-fixed cable so fix 

the loose end directly onto the battery terminals (positive to positive / 

negative to negative) – contact 01684 774000 for more information.

5wp/10wp/20wp/60wp/80wp/100wp/120wp/150wp

Warranty

 

Solar Technology International flexi solar panels are supplied with a 2 year 
panel build warranty and 20 year cell performance warranty.

2 Year build warranty 
This guarantee’s the panel from mechanical failure and water ingress during 
this period. Void if the outer layers of the panel have been penetrated.

20 Year cell performance warranty 
The solar cells are guaranteed to perform for the long term and this warranty 
specifically confirms that by year 20 the cells will be outputting no less than 
80% of their new value. For example, a 100wp solar panel is guaranteed 
to deliver no less than 80wh by year 20 when tested under Standard Test 
Conditions.

In the event of a successful warranty claim in both cases,  
Solar Technology International will, at its discretion provide one of the 
following remedies; 

1. Replace the defective solar panel or 2. Refund the 

percentage of the cost of the solar panel to the customer representing the 
percentage of the time period between new and year 10 and in the case of 
a claim on the cell performance a percentage will be paid according to the 
power output less than 80%.

Solar Technology International Ltd does not accept liability for any 3rd party 
damage how so ever caused or any costs associated with the return of faulty 
products.

RED or BROWN = POSITIVE (+)  
BLACK or BLUE = NEGATIVE (–)

Second battery  

bonnections

 Battery 

connections

CHARGE CONTROLLER

Solar panel

connections

CONNECTING THE CHARGE CONTROLLER  

TO A BATTERY AND A SINGLE SOLAR PANEL

SOLAR  

PANEL

BATTERY

MAIN 12V SUPPLY

IN-LINE  

5 AMP FUSE

Semi-Flexible Solar Panels

Important: please read before first use.      

 

         

Technical helpline 01684 774 000

PV Logic

®

  

Flexi

User manual

Solar Technology International Limited  

Unit 6, Station drive, Bredon, Tewkesbury GL20 7HH

CONNECTING THE CHARGE CONTROLLER  

TO A BATTERY AND MULTIPLE SOLAR PANELS

RED or BROWN = POSITIVE (+)  
BLACK or BLUE = NEGATIVE (–)

BATTERY

 Battery 

connections

CHARGE CONTROLLER

Solar panel

connections

Second battery  

bonnections

IN-LINE  

5 AMP  

FUSE

MAIN 12V 

SUPPLY

SOLAR  

PANEL

SOLAR  

PANEL

SOLAR  

PANEL

SOLAR  

PANEL

We want your photos and videos!

Here is your chance for you and your solar panel to be a star! Just send in pics or videos of you and your solar panel in a great location and if selected we will not 

only give you ever lasting recognition on our online favourite users wall of fame but we will send you a Freeloader Sixer, 6000mAH solar power bank worth £70 completely free!
Please send to 

[email protected] including your address details and b est of luck! 

Note – we cannot guarantee to publish every entry and only those selected by our marketing department for publication will be awarded a Sixer. By providing your images you 

automatically grant us the right to use these images or videos howsoever we see fit.

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