612 Vermont

2.5 Volt Mini Christmas Replacement Bulbs for Christmas Trees and Incandescent String Lights, Pinched Base, 100 Count

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• 2.5 volt mini replacements bulbs for incandescent Christmas lights
• Pinched base shape fits most light sets
• Value pack includes 100 clear or 100 multi bulbs
• Multi assortment includes Red, Green, Blue, Yellow, and Amber
• Available in 3 different wattages including 0.42 watt (170 mA), 0.5 watt (200 mA), and 0.25 watt (100 mA)
• Please, check the white tag near the plug to confirm bulb specifications

These 2.5V mini Christmas replacement bulbs for incandescent string lights are made with a pinched base which means that they will fit most light sets (whether a pinched base is required or not). 2.5V lamps are very common for string lights with 50 or more lamps, however it is very important to confirm the amperes (or wattage) for your particular light set to be sure that you get the correct brightness. We offer the following three options for 2.5 volt lamps:

170 mA (0.42 watt): These are the most common 2.5 volt mini replacement bulbs used now-a-days and are intended for use with incandescent string lights that require 0.42 watt lamps. These lamps will shine nice and bright in light sets that recommend between (0.41 – 0.44 watt lamps).

200 mA (0.50 watt): These 'high wattage' replacement bulbs are for use with incandescent string lights that require 0.5 watt lamps. These string lights are fairly common and have been the standard for certain brands, most notably GKI Bethelem. The 0.5 watt bulbs are intended to be brighter than traditional 0.42 watt lamps, however, if you use these lamps in a light set that requires a lower wattage, they will often glow dim. It is important to double check the wattage (or amperes) required for your light set before purchasing.

100 mA (0.25 watt): These lamps are intended ONLY for incandescent string lights that require low wattage or energy saver light bulbs. This wattage is not common, but it has been used on different light sets and decorations for years. Most light sets of this nature will specifically state that you need to use 100 mA bulbs (or 0.25 watt) bulbs as replacements. This is typical of light sets termed heavy duty and it most commonly found on sets of 200+ lights or icicle light sets. If you use these replacement bulbs in light sets that require higher wattage lamps, these lamps will flash and burn out immediately. It is important to double check the wattage (or amperes) required for your light set before purchasing.

These 2.5 volt replacement bulbs are sold 'naked' which means that they do not come with any plastic husk. Please be sure to keep the plastic husk that the old bulbs are removed from so that these will incorporate into your string light. The unique pinched base shape to these bulbs allows them to set fully down inside of most any husk to make meaningful contact with the brass contacts inside.

Please be sure to reference the tag near the male plug on your light set to confirm both the voltage and the wattage for your string. Voltage, amperes, and wattage must all match to ensure that the lamps will light with proper brightness.

If you have any questions, or need help troubleshooting, please feel free to give us a call at 1-877-750-0971. We can also be reached through the contact us form on our website.

Bulb Dimensions:
Length of glass - 7/8 inch
Length of wire - 3/8 inch
Diameter of glass - 5 mm


prop-65-warning-6-pt.png WARNING: This product can expose you to chemicals including lead, benzene, and cadmium, which are known to the State of California to cause cancer, birth defects, or other reproductive harm.  Wash hands after use.  For more information go to

Additional Details


78 Reviews

  • 5
    Worked perfectly

    Published by Mj R. on Apr 12th 2024

    Best customer service I’ve run across in ages. Very helpful people. I had a little trouble replacing my bulbs and they helped me problem solve my issue. I’m very happy with their product and service.

  • 5
    Great Company

    Published by William on Mar 4th 2024

    Happy with purchase, they all work great

  • 5
    Mini Replacement Bulbs

    Published by Kurt S. on Feb 19th 2024

    After reviewing the proper wattage/voltage, bulb shape, etc., I purchased 50 bulbs … they work perfectly!

  • 5
    Christmas Replacement Bulbs

    Published by Larry on Feb 15th 2024

    I received my order when promised. It was well packaged. I replaced the burnt out bulb with no problems and left them on for a while. There were no issues, after next year I’ll let you know how about their longevity.

  • 5
    Amazing customer service. Professional, friendly and knowledgeable.

    Published by Roger S. on Jan 31st 2024

    Perfect! I love the fact that I can call and speak with someone to make sure that I'm ordering the correct product. They ALWAYS come through. Love them!!!

  • 5
    Worked Well!!!

    Published by Bdaniels on Jan 31st 2024

    Ordered the 2.5v, 200 mA, 0.5 Watt pinched base clear bulbs. The bulbs have identical electrical specs of the GE bulbs that I am replacing on a Christmas tree. The bulb's light was equal to warmth and brightness of my original bulbs. The fit of these bulbs were more narrow than the bulbs that I have so there is wiggle in the socket. The wiggle did not affect the installation or functionality. The wires are bent on the socket and socket is pressed fit. Thus the bulb is connected solidly. I can not speak to the longevity of these bulbs since I replaced them at the end of the Christmas season. I will know more next year. These appear to be a good replacement bulb. I purchases 100 bulbs in initial purchase. Today I just purchased 200 more. Not sure how long incandescent mini lights will be available since everything seems to be going LED.

  • 5
    The bulbs were just what I needed.

    Published by Gary R B. on Jan 25th 2024

    Derek is always very helpful and has a lot of knowledge to help you find or help you get to what you need

  • 5
    Works great

    Published by Daniel S. on Jan 22nd 2024

    Completely satisfied

  • 4
    Replaced all burnt out bulbs on Christmas tree

    Published by David on Jan 18th 2024

    The bulbs arrived one day sooner than expected after ordering. I was able to replace all of the burnt out bulbs on one string in time before storing away the tree for next Christmas. The voltage and ampere ID tag on just that particular string was missing on the cord. I had to assume it must be same ratings as all the other strings on the pre-lit tree because we never replaced a string. The gentleman from hard to find items disagreed with my tag ID assumption based on that the total bulb count on the string was only 35 bulbs. But once the string was taken off the tree and every bulb was able to be seen and replaced, then the string lit up. I was glad the bulbs work so I didn't have to hunt down in the stores that exact same string which likely can't be replaced anymore

  • 5
    2.5 Volt Pinched Base Bulb

    Published by Daniel on Dec 27th 2023

    I am very happy with my purchase of the 2.5 Volt Mini pinched base bulbs. I am using the bulbs to replace burnt out bulbs and bulbs that did not match the proper voltage on a 5 1/2 ft. narrow Christmas tree. The tree looks beautiful with all it's lines now glowing with new bulbs. The pinched bulb base with the proper amperage could not be found in any major box stores. I am very pleased with my purchase.

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