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
    Replacement bulbs

    Published by Darla H. on Mar 15th 2024

    I’m so glad I found your website. I have lots of older Christmas speciality lights that are now needing to be replaced. Thanks to you I can now replace the burnt out bulbs rather than having to put in the trash.. My only complaint I have is you stopped carrying the 3volt bulbs. I have so many older outside yard displays that require that voltage of lights and can no longer use them.

  • 5
    Christmas lights

    Published by Unknown on Feb 23rd 2024

    Got my icecicle light back to 100%

  • 5

    Published by Janet on Feb 8th 2024

    Just what I needed to replace lights on a light string we use but after Christmas no one carries light bulbs in-store. I tried some I found during Christmas and since there was no info on the bulb type on the light string box I was confused when they would burn out as soon as I installed them. Thank you for offering the specifications info so I could choose the right bulb and put my lights away for next year ready to go!

  • 5
    could not find replacement bulbs for my xmas tree, after having a conversation with your very knowledgeable rep, i was sure this would work .... and it did!!!

    Published by Michell L. on Feb 6th 2024

    help from rep exceeded my expectations. was professional, and was able to explain the technical "stuff" so that I could understand.

  • 4
    Good Bulbs

    Published by Joe W. on Feb 1st 2024

    What kept my rating from being excellent is some of the bulbs stuck together so the paint pulled away from the bulb when separated. I did have a few bulbs that were DOA. Overall though this was a good purchase.

  • 5
    The bulbs were just what I needed.

    Published by Gary R B. on Jan 25th 2024

    Derek is always very helpful

  • 5
    Christmas Tree Light Set Repair

    Published by Susan J. on Jan 17th 2024

    I am beyond thrilled that these replacement lights made my Christmas light sets from 2015 like new again!

  • 5
    Replacement Mini Bulbs

    Published by KURT S. on Dec 21st 2023

    Perfect solution; found in March 2023, just now finishing the Christmas Tree replacements. Will be ordering more bulbs very soon. No Delivery to Canada is puzzling.

  • 5
    2.5V multi-colored pinched base replacement Christmas light bulbs

    Published by Unknown on Dec 19th 2023

    I didn't think I could find this replacement type until I browsed your website. Had to place two orders to get what I needed since the device's white tag did not specify ampere rating for replacement bulbs. All good now. You're my main source for straight-base white replacements in large quantities. Thanks for being there.

  • 5
    2.5 Volt Lights

    Published by KURT S. on Dec 8th 2023

    I'm in the process of replacing burnt out bulbs with your product. Am pleased to report they work PERFECTLY! Chances are pretty good I'll be ordering more replacement bulbs in the near future. Thanks very much, Kurt

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