Marchpower 40 m 300-LED Warm White String Lights

Marchpower Christmas String Lights are a 40 m warm-white LED string with battery power, eight lighting modes and a 6-hour-on, 18-hour-off timer. The listing supports decorative indoor and outdoor use, but gives conflicting battery details that are worth checking before purchase.

At a glance

Eight modes include steady-on, twinkle and chasing effects, according to the listing.
The timer is described as a fixed 6-hours-on, 18-hours-off cycle, with memory for the selected lighting mode.
At 40 m with 300 LEDs, this string is suited to spreading warm-white decorative light across a larger area.

Price

$33.98Save 15%

Reference price: ~~$39.99~~

Price checked: 12 Nov 2026

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Pros and cons

Pros

Battery operation can suit locations where a nearby power outlet is inconvenient.
The stated length and LED count offer a long decorative run with warm-white light.
Multiple lighting patterns and a timer provide options for changing the display and automating its daily cycle.

Technical specifications

18 specifications

Identity and lighting
Brand	Marchpower
Model	NS-BO-3-T-1000-IP44
Light source	LED
Light colour	Warm White
Number of LEDs	300
Lighting modes	8 Multi-Function settings

Power and controls
Power configuration	Battery Powered
Battery requirement	3 AAA batteries required.
Timer	6 hours on and 18 hours off
Control method listed	Touch
Wireless connection listed	USB

Dimensions and installation
Length	40 Meters
Form factor	String
Weight listed	600 Grams
Battery pack to first light	0.4M
Distance between LEDs	13.5cm

Materials and protection
Water resistance listed	Waterproof
Usage listed	Outdoor

What to know before buying

Listing details to confirm

Battery details are contradictory: the listing calls for 3 AAA batteries in the specifications but 3 AA batteries in the feature text and product description. It also mentions USB connectivity without explaining its function, and its waterproof claim is not accompanied by a stated protection rating. Confirm the battery type and intended USB use before buying.

What’s in the box

Included

Battery box
LED lights

Who is it for?

A good fit for

Decorating trees, patios, gardens, balconies or party spaces where a long battery-powered light string is useful.
Buyers wanting warm-white light with several pattern options and a fixed daily timer.

Less suited to

Buyers who need a confirmed battery type or a clearly specified USB power or connection function.
Anyone needing a documented water-resistance rating for a particular outdoor exposure.

Marchpower 40 m 300-LED Warm White String Lights · photo 2 — Additional product photo 2

Customer reviews on Amazon

4.6 / 5 · 17 ratings

5 stars72%72%
4 stars18%18%
3 stars10%10%
2 stars0%0%
1 star0%0%

The supplied evidence includes aggregate ratings but no customer comments. Those ratings lean positive, with some three-star ratings in the distribution, but they do not reveal what buyers liked or found problematic. They cannot establish the lights’ actual battery performance, timer operation or outdoor durability.

Frequently asked questions

How long is the light string and how many LEDs does it have?

The listing specifies a 40 m string with 300 LEDs.

What batteries does it use?

The listing conflicts: its specifications state 3 AAA batteries, while feature and product-description text states 3 AA batteries. Batteries are described as not included, so confirm the required type before purchase.

Does it have a timer?

The listing describes a fixed cycle of 6 hours on followed by 18 hours off. It says the timer can be activated or disabled using the battery-box button.

Can it be used outdoors?

Outdoor use and waterproofing are claimed, but the listing does not provide a water-resistance rating. Consider the stated information carefully for your installation.