612 Vermont

2.5 Volt Mini Christmas Replacement Bulbs for Christmas Trees and Incandescent String Lights, Pinched Base, 50 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 50 bulbs
• Choose from Clear, Multi, Red, Green, Blue, Yellow, Amber, and Pink
• 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


76 Reviews

  • 5
    2.5 v pink Mini bulbs

    Published by Becky W. on Dec 5th 2023


  • 5
    mini Christmas light

    Published by Unknown on Dec 1st 2023

    nice to have the various current rating for the bulbs

  • 5

    Published by Roger on Nov 22nd 2023

    Working with one of customer service reps on the phone, ordered replacement bulbs for one of our stings of lights. The work great!

  • 5
    Replacement Christmas bulbs

    Published by William Y. on Aug 15th 2023

    Finally found the correct replacements for our icicle lights ! Quick delivery and as advertised.

  • 5
    2,5 Volt, 100mA clear replacement bulbs for Christmas tree

    Published by Peter W T. on Feb 7th 2023

    Once I was able to determine the correct amperage rating for the 2.5 Volt clear light, I ordered them. They work Puuuurfectly. Thanks for availablity and great service.

  • 5
    Mini replacement bulbs

    Published by Unknown on Jan 25th 2023

    When the retailer I originally purchased our tree from no longer carried replacement bulbs, I was really happy to find these. Our tree has been saved!

  • 5
    2.5v mini low power replacement lamps

    Published by Jim on Jan 16th 2023

    This was the only place I could find these. Fast service and got my shrub net lights back to full illumination

  • 5
    Christmas tree lights

    Published by Clive on Jan 9th 2023

    I had a difficult time finding the pinched base bulbs for my prelit Christmas tree. You had them and sent them to me quickly and at a great price! The tree now looks great again. Thanks guys!

  • 5
    Replacement mini bulbs

    Published by John on Jan 1st 2023

    I have purchase a variety of these bulbs over the past few years and have never been disappointed.

  • 5
    Christmas Replacement bulbs

    Published by Mej E. on Dec 27th 2022

    They are exactly what I was looking for. Very happy with them.

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