how much current does it used per 5 meter a 24V?

DC24V3A is enough for DC24V 5meters FCOB LED strip https://www.amazon.com/dp/B09T6QQ2W5?ref=myi_title_dp

Does the brightness decrease along the length of the strip and if so, can power be injected at other places to reduce the brightness drop-off?

Yes ,the brightness decrease along the length of the LED strip . The LEDs at the far end of the strip might be dimmer because of the added resistance and voltage drop that occurs as the current flows to that end of the strip.This is a normal physical phenomenon, and all the LED strip cannot avoid this problem. The factors that affect brightness are： 1.Length . If your project is too long , the voltage drops . 2.Power supply . Make sure the power is enough for the project . 4.Brightness. The brighter the brightness, the more the consumption 5.LED quantity . More LEDs ,need more power . Solution： 1.Adding voltage every 5 meters (16.4ft) . 2.Lower brightness 3.Enough power 5.Using DC24V LED strip. 6.Less LEDs You can use DC24V or this kind of sigal amplifier : https://www.amazon.com/LEDENET-Single-Amplifier-Repeater-Channel/dp/B01LY7M712/ref=sr_1_3?crid=3UIQ04SAZ6I9L&keywords=single+color+signal+amplifier&qid=1656645595&sprefix=single+color+signal+amplifie%2Caps%2C297&sr=8-3

Can I cut this into multiple strips?

Yes ， you can cut it . There is a cutting point on the FPCB board , Follow the point line and cut it .

Can I cut this to make 90 degree corners with an adapter?

yes , you can search the 8mm width FCOB connector on amazon , you can find this kind of L shape connector

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BTF-LIGHTING FCOB COB LED Strip Warm White 3000K, UL Listed 16.4FT DC12V Super Bright Uniform Light, CRI 90+ 8mm Width Flexible Tape Light for Home Indoor DIY Lighting(No Adapter or Controller)

Product ID: 445979645

Details

Brand
BTF-LIGHTING
Color
Warm White
Indoor/Outdoor Usage
Indoor
Light Color
Warm White
Light Source Type
LED
Occasion
Christmas

⚡28W total power with efficient DC12V

🎨CRI 90+ for true warm white 3000K color

💡336 LEDs/m ultra dense brightness

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Description

✨ Illuminate your world with flawless warmth and flexible style!

BUILT TO LAST COOL - Double-layer copper PCB ensures superior heat dissipation and 65,000+ hours of reliable illumination.
PLUG PLAY FLEXIBILITY - Cuttable, linkable, and compatible with most dimmers—customize your lighting vibe effortlessly.
COMPLETE INSTALLATION KIT - Includes connectors, clips, and extension wires—everything you need to upgrade your space like a pro.
SEAMLESS GLOW ZERO HOTSPOTS - FCOB tech delivers ultra-uniform, soft light that elevates any space with flawless brightness.
DESIGNER WARMTH WITH PRECISION - 3000K warm white light with CRI 90+ brings out true colors, perfect for stylish indoor decor.

The BTF-LIGHTING FCOB LED Strip offers 16.4 feet of ultra-dense, warm white 3000K light with 336 LEDs per meter, delivering smooth, uniform illumination without hotspots. Powered by 28W at DC12V and featuring a high CRI of 90+, it ensures true-to-life colors ideal for sophisticated indoor environments. Its flexible, cuttable design with double-layer copper PCB guarantees long-lasting performance and excellent heat management. Compatible with most dimmers (controller sold separately), it comes with connectors and mounting accessories for easy, professional-grade installation.

Specifications

ASIN	B0828YGB39
Additional Features	DC connector, Dimmable, No Light spot, Uniform light
Best Sellers Rank	#4,788 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #44 in LED Strip Lights
Brand Name	BTF-LIGHTING
Color	Warm White 3000K IP30
Color Temperature	3000 Kelvin
Connectivity Protocol	Wi-Fi
Control Method	Remote
Controller Type	Remote Control
Customer Reviews	4.6 4.6 out of 5 stars (758)
Included Components	1X 16.4FT FCOB LED strip, 2X Non-Wired Gapless Solderless Connector, 3X LED Strip fixed Clips, 1X 20AWG 20AWG Extension Wires, 1X User manual
Indoor Outdoor Usage	Indoor
Ingress Protection Code Rating	IP30
Item Dimensions	5.91 x 0.59 x 5.91 inches
Item Length	5 Meters
Item Weight	0.04 Kilograms
Light Color	Warm White
Light Source Type	LED
Manufacturer	BTF-LIGHTING Technology Co., Limited
Manufacturer Part Number	F0B5M12V504LWWW30
Material Type	Plastic
Model Number	FCOB-12V-336L-W-IP30
Number of Items	1
Number of Light Sources	2520
Occasion	Christmas
Power Source	DC
Product Style	Modern
Theme	Indoor
Unit Count	1.0 Count
Voltage	12 Volts (DC)
Water Resistance Level	Not Water Resistant
Wattage	28 watts

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Sold byAmazon VietnamDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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