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612 Vermont

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

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Now: $14.99
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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  www.P65Warnings.ca.gov.

90 Reviews

  • 5
    Great product and great service!

    Published by Mark W on Dec 4th 2025

    Product arrived as expected and on schedule. Great replacement for bulbs on my Christmas tree. Color matches factory bulbs exactly and easy to replace.

  • 5
    Replacement bulbs that work!

    Published by Stephen T on Nov 15th 2025

    So nice to finally find a source where the bulbs are new and the right wattage without having to cannibalize old sets of lights! I've been the Christmas lights repairman for SO many years, and it was always frustrating when the bulbs I used came on dimmer than the rest of the string. Now I can order the correct ones and restore the string to make them last longer and look like new!

  • 3
    Light replacement

    Published by Joann Lange on Sep 24th 2025

    Light bulbs were not as bright as I needed. Customer service indicated that the one I ordered was not the one usually suggested for Christmas trees

  • 5
    Mini-lights

    Published by Tom on May 5th 2025

    If you own a strand of these lights you need a box of these replacement bulbs. Once a light goes out you should replace it right away or more will burn out sooner as they take the added voltage of the lost bulb. Super easy to replace.

  • 5
    Replacement bulbs for Balsam Hill Xmas tree

    Published by Tom C. on Mar 10th 2025

    I have an older Balsam Hill Christmas tree for which replacement bulbs are no longer available. Even Balsam Hill was unable to help. They have changed the base of the bulb so that the newer bulbs simply do not fit. I tried hardware stores but no one carried lights with that base. But the answer turned out to be: keep the base, just change the bulbs. With your help I ordered clear replacement bulbs, 2.5 volt, 100 ma, .25 watt, pinched base. Worked like a charm. But the real story here is encountering someone (Ellie in cust svc) who had the knowledge and cared enough to help. What a refreshing change from the usual customer NO service. I sent an email to Balsam Hill recommending 612 Vermont for any other people who have older trees. Thanks again.

  • 5
    2.5 mini Christmas replacement bulbs

    Published by Nannette Sclater on Jan 17th 2025

    These are the only bulbs that I can get that will work with the light strings that I have. I love these lights

  • 5
    Mini Christmas Replacement Bulbs

    Published by Roger on Jan 17th 2025

    These are great bulbs. 100% success and long lasting. I've ordered many of them. 612 Vermont always delivers!

  • 5
    2.5 volt Pinched Base Mini Replacement Bulbs

    Published by Lagrange, Illinois on Dec 20th 2024

    Great source for hard to get mini bulbs. Order process was easy and the lights were delivered within a weeks time.

  • 5
    Replacement bulbs

    Published by Darla Hanson on Dec 10th 2024

    I’ve bought many many bulbs from you and only one time has there been a faulty bulb. It had 3 wires rather than two.

  • 5
    2.5 volt mini bulbs

    Published by ANTHONY on Dec 10th 2024

    Excellent replacement for my Christmas tree lights. Easy to replace and long lasting product. Would buy again only from 612 Vermont.

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

MSRP:
Was:
Now: $14.99
(You save )