can you connect this directly to electric connector block with 220v?

Dear Amazon Customer: Hello,Thanks for your question, COBLED strip is a low voltage product, you must use the power supply/adapter, please do not connect the COBLED strip directly to AC110V or AC220V power supply, otherwise the LED strip will be burnt out.You need an external power supply with enough power, i.e. for 24V/45W, or 24V/50W etc.

can you link two of these together for a total of 10m?

Dear Amazon Customer: Thank you for your question! Our store will promote the new No voltage drop 10m Flexible COB LED Strip Lights in the near future, so stay tuned. For 5m12V Flexible COB LED Strip Lights ,You can cut the strip light along the cut mark (every 25mm). And you can connect them with COB connectors or welding.Our COB Strip is low voltage, which has a pressure drop, the longer length, the more obvious pressure drop, so we recommend use 1 to 2 splitter cable to connect 2 strips in parallel, which can stay same brightness, not in series.

Can I wire this direct to the 12V supply on my boat (from liesure batteries)?

Depends how good your regulation is. If you supply goes upto 18v say when generator is running, they will get very bright and fail prematurely. I would use a 12v regulator with a low drop out voltage.

How long is the wiring up to the start of the LED strips ?

Dear Amazon Customer: Thanks for your question! COB led strip ,Double ended 15CM red and black parallel. Best regards. SIRYYUI LED Strip

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Description

✨ Illuminate your world with flawless, flexible brilliance!

POWERFUL EFFICIENT - 5000 lumens brightness with CRI 90+ ensures vibrant, true-to-life colors while saving energy.
SAFE USER FRIENDLY - Low heat 12V DC operation makes it safe for home and kids, perfect for DIY projects and professional setups.
SEAMLESS DOTLESS GLOW - COB tech delivers smooth, glare-free daylight white light that elevates any space.
LONG LASTING DURABILITY - Over 50,000 hours lifespan means your lighting stays flawless for years without hassle.
CUSTOMIZABLE LENGTH SHAPE - Cuttable every few centimeters and highly flexible to contour around corners and edges effortlessly.

The SIRYYUI 12V COB LED Strip is a 5-meter, 480 LEDs per meter high-density tape light emitting crisp 6000K daylight white with a high CRI of 90+. Featuring advanced COB technology, it provides uniform, dotless illumination with 5000 lumens brightness at 12V DC. This 8mm wide strip is cuttable, flexible, dimmable (dimmer sold separately), and designed for low heat operation, making it ideal for home, cabinet, and DIY lighting projects with a lifespan exceeding 50,000 hours.

Specifications

Brand	SIRYYUI
Manufacturer	SIRYYUI
Product Dimensions	500 x 0.8 x 0.23 cm; 80 g
Item model number	SY-480COB-12V
Part Number	White-A578
Area Lighting Classification	‎IP20
Number of Items	1
Style	Art Deco
Colour	6000k-ip20
Number of Blades	480
Material	FPCB
Number of Lights	480
Voltage	12 Volts (DC)
Specific Uses	Flexible strip, Portable, Dimmable Light, ‎6000K daylight white ,Light soft
Special features	Super bright, Dimmable, Dotless, Cuttable, More uniform,Light soft,Portable,Flexible strip
Shade Colour	white
Shade Material	Plastic
Light Direction	‎Up/Down Light
Power and Plug Description:	DC12V
Batteries included?	No
Batteries Required?	No
Type of Bulb	LED
Luminous Flux	5000 Lumen
Wattage	45 Watt-hours
Bulb Features	Super bright, Dimmable, Dotless, Cuttable, More uniform,Light soft,Portable,Flexible strip
Colour Temperature	6000 Kelvin
Colour Rendering Index (CRI)	90.00
Average Life	50000 Hours
Bulb Length	5 Metres
Item Weight	80 g
Guaranteed software updates until	unknown

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