100W 12V ultra-narrow semi-flexible dual battery solar charging kit

This high efficiency semi-flexible 100W dual battery solar charging kit is perfect for permanent outdoor use to provide free electricity for charging 12V batteries to power various applications, such as in a motorhome, caravan, camper, boat, or for solar lighting systems, off-grid and back up solar power systems.

Solar kit includes

- 100W black ultra-narrow semi-flexible fibreglass solar panel with a durable ETFE coating

- 10A 12V dual battery solar charge controller for independent charging of 2 batteries or battery banks (can work with a single battery too)

- A pair of 5m 4.0mm² single core extension cables with MC4 connectors

- 5m of 4.0mm² dual core battery cable

100W Black ultra-narrow semi-flexible fibreglass solar panel

This highly durable black ultra-narrow semi-flexible solar panel reinforced with fibreglass plastic has a surafce made of strong ETFE material which has a longer service life compared to standard semi-flexible solar panels. As a result, these particular semi-flexible solar panels are extremely hard-wearing and less prone to cracking, delamination and corrosion. The lightly textured coating of this panel creates an anti-reflective surface which allows the panel to absorb a far greater amount of light, thereby increasing efficiency. ETFE material has long been used in applications where durability and high-temperature resistance is required, such as in the Eden Project, Cornwall. You can read more about ETFE and its benefits here .

This panel also features new generation 5-busbar solar cells, which are more efficient than the 2, 3 or 4 busbar solar cells used in most other solar panels, and are able to extract more power from the same surface area. This results in a smaller overall solar panel, which is ideal for applications where space is limited.

This solar panel has a unique black backing, making it ideal for discreet and aesthetically pleasing installation on dark coloured roofs, vehicles or mounting surfaces. Please note that this solar panel is not 'ultra jet-black' - the exact hue may vary marginally from panel to panel, depending on the batch of solar cells.

The semi-flexible design of this panel makes it ideal for curved roofs and surfaces where bonding is preferable (though the panel can also be fixed by bolts or screws). The unique ultra-narrow shape is ideal for applications where space is restricted, or where there are obstructions on the roof (only 350mm wide).The panel is also incredibly light (only 1.72kg) which makes it an ideal option for all vehicle applications. This panel is also highly resistant to salt water environments and it is also possible to walk on the panel, making it the perfect choice for boats and yachts.

The panel is fitted with 2 x 1m of cable (4mm² cross section) with MC4 connectors on the end which simply plug into the 5m extension solar cable supplied with the kit, to join the solar panel and the charge controller.

10A Dual battery controller

The kit includes a 10 A 12V/24V dual battery solar charge controller designed to charge and protect two batteries independently, with automatic cut off to prevent over-charging. The controller uses PWM (Pulse Width Modulation) technology which increases charge acceptance and prolongs the life of your batteries. PWM technology can also recover some lost battery capacity

This is a perfect solar controller for a caravan / camper van / boat or another system with two batteries (e.g. engine and leisure battery) or battery banks. You can set the initial charging priority e.g. 80% power to go to the engine battery and 20% to leisure battery. When one of the batteries is fully charged the controller will automatically divert all power to the other battery.

Can the unit work with only one battery? Yes, absolutely! The controller will determine automatically if there's only one battery connected and will pass 100% of charging current to this battery. You can add a second battery later.

The unit has numerous safety functions, including protection against reverse current at night (from the battery back to the solar panel), over charge, short circuit, reverse polarity etc. Other features include various LED indicators, battery type selection (sealed, gel, flooded) and an RJ-45 socket for an optional remote LCD meter with 10m cable .

A built-in temperature sensor allows the controller to optimise the charging process depending on the ambient temperature. If you are planning to position the controller far away from the battery, or if the battery and the controller are exposed to different ambient temperatures, an external remote temperature sensor with 3m cable is recommended for this dual battery solar charge controller. To enable connection to the screw terminals of the controller, the green connector block on the end of the remote temperature sensor cable should be cut off.

The solar charge controller is compatible with sealed, gel and flooded lead acid batteries.

Additional items

The kit also includes a pair of 5m positive and negative solar extension leads (4mm cross section) and 5m of 4mm dual core battery cable for use between the solar charge controller and your battery, making the total cable length between the solar panel and the battery 1m + 5m + 5m = 11m.

- Solar panel specifications
- Peak power: 100W
- Maximum power voltage: 18.2V
- Maximum power current: 5.50A
- Open circuit voltage: 21.3V
- Short circuit current: 5.77A
- Solar Panel Dimensions: 1520 x 350 x 3 mm
- Weight: 1.72 kg
- 2 x 1m of high quality single core solar cable (4mm² cross section)
- Male and female MC4 connectors
- Charge controller specifications
- Fully automated operation and auto 12/24V selection
- Maximum solar input power: 160W (12V system) / 320W (24V system)
- Maximum solar input voltage: 30V (12V system) / 55V (24V system)
- 3 pairs of terminals (input, battery 1, battery 2)
- LEDs to indicate state of charge
- Temperature sensor for temperature compensation of charging (-30mV/C/12V)
- RJ-45 connection point for a remote meter (not included)
- Various protection features (over charge,short circuit, reverse polarity etc)
- Self-consumption: 4mA at night, 10mA when charging
- Working temperature: -35C to +55C
- Terminals for wire up to 4.0mm2
- Size: 15.5 x 7.6 x 4.0 cm
- Weight: 185 g
- Multiple mounting holes for ease of installation
- Please note: due to our warehouse arrangements, the solar charge controller and accessories may be shipped from a different warehouse to the solar panel and therefore delivered in a separate package.
- For installation advice, please click on the Installation tab.

Electrical connection: the solar charge controller included in this kit comes with a detailed user manual which contains a wiring diagram and explains installation / operations (see Documents tab). Please ensure that you read the full user manual before starting the installation.

Fitting: before installing this solar panel, please read the handling and fitting guidelines, available to download in the 'Documents' tab.

The solar charge controller in this kit is not waterproof and should be mounted indoors.

- Technical drawing of black 100W ultra-narrow fibreglass semi-flexible solar panel FLAXNRB2-100M
- Handling and installation manual for FLAX semi-flexible solar panels
- User manual for DB1024 10A 12V/24V automatic solar charge controller