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, 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


29 Reviews

  • 5
    The bulbs are just what I needed to get my christmas display back in shape as when it was new.

    Published by Gary Bush on Mar 22nd 2021

    Derrick, was very helpful and understanding to all my needs and concerns. He taught me a lot about Christmas Light Bulbs and how to get the right replacement for the job at hand..

  • 4
    2.5 v replacement Christmas lights

    Published by Raymond on Mar 8th 2021

    They worked

  • 5

    Published by Stephen on Mar 1st 2021

    Exactly as ordered, thank you!

  • 5
    Mini bulb replacement

    Published by Mark Radosevich on Feb 26th 2021

    Not knowing what type of mini bulb to select / l was ask to submit model number witch l did / the correct bulb replacement is the exact match/ This now will extend my artificial Christmas tree for many more years ( Thank you)

  • 5
    2.5 volt mini christmas replacement bulbs

    Published by Unknown on Feb 26th 2021

    They burned brightly, as promised. I have tried replacements from chain stores but they were all dim. These are great!

  • 5
    Best Buy

    Published by J Cox on Feb 11th 2021

    I needed these for my Christmas Tree. Of course when I replaced many lights when taking the tree down no one had them in stock in the stores so I turned to shopping online.

  • 5
    Replacements for Balsam Hill tree lights

    Published by Leonard Hancock on Feb 8th 2021

    After calling Balsam Hill and finding out that their replacement bulbs for my tree were no longer available and that they could not give me the amp/wattage specs on the bulbs I needed I took to the web. Bought some bulbs from a company that said they would work but they didn't. I found 612Vermont on line so I called them. Explained what I had found out so far and they said to try the 2.5 volt 100ma (0.25 watt) pinched base bulbs. They knew what they were talking about - their bulbs worked great. Had to replace almost 400 bulbs out of the original 1800 but now the tree looks great. If you have an older Balsam Hill tree these are the bulbs you need. Thanks so much612.

  • 5

    Published by Duane Wilkins on Jan 27th 2021


  • 5
    Great vendor

    Published by Karle Meyer on Jan 27th 2021

    This is one of two vendors the actually know what the wattage of their bulbs are. When I contacted them with a question about some bulbs they responded quickly, thoroughly, and more importantly, accurately. This is now the only place that I purchase replacement bulbs.

  • 5
    Pinched base 2.5 volt mini lights, all colors

    Published by Cecil on Jan 26th 2021

    These are the only truly universal fit bulbs I've found. The pinched bases fit all the inserts. I have not found any pinched based bulbs in the stores, only the standard round bottom. There are at least three different tube size round bottom bulbs and if you don't get the right size, they don't fit the insert or the wires are too short. These bulbs solve this problem. Just verify the bulb voltage and amps. I've been able to repair five dead strings with these bulbs and resurrect some dead round Christmas spheres. These are great bulbs. I've used around 60 replacements and no dead bulbs. The cost for 50 bulbs is the same for 5 bulbs in the blister pack from the hardware store.

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