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


17 Reviews

  • 4
    Good product cosistent with advertising

    Published by Waldemar on Dec 5th 2020

    Thank you

  • 5
    Lights Bulbs that Fit and Work

    Published by Stephen Rivera on Nov 30th 2020

    I had a pre-lit tree that had pinch bulbs that would only fit into the socket. 612 Vermont company not had the right fit but explained the difference between the 2.5 volts by getting the right mA. I realized that 2.5 volts with 200mA was the right voltage and the bulbs did not burn out immediately. I am thrilled that I have extra bulbs to fix the tree and understand the differences with the mA (amps). Thank you for providing that great guidance.

  • 5
    Perfect Replacement Bulb

    Published by Chris on Nov 16th 2020

    Ordered these replacement bulbs for my outdoor decorations. A lot cheaper than replacing the whole decoration. They matched perfect, and are good quality.

  • 5
    Packaging protected product. No damage. All lights functioned.

    Published by Gerald Kilbane on Nov 5th 2020

    Pleased with product. Used about 70 without a failure.

  • 5
    2.5 Volt, 100 mA Clear Mini Christmas Replacement Bulbs

    Published by Charles on Sep 22nd 2020

    Bulbs were packaged well. Replaced old bulbs with ease. Excellent product. Website and ordering clear and concise.

  • 5
    Great replacement bulb

    Published by Unknown on May 18th 2020

    These lights work perfect for my yard decorations. Exact brightness to existing bulbs.

  • 5
    Exact fit

    Published by Unknown on May 4th 2020

    Bulbs were exactly what I was looking for. Brightness, color, and fit were great.

  • 5
    Product was exactly as described. Super fast delivery.

    Published by Unknown on Jan 31st 2020

    No other website described the product in detail as 612 Vermont did. I was confident that I was purchasing the correct bulb.

  • 5
    2.5 Volt Clear Mini Christmas Replacement Bulbs

    Published by Keith Vesely on Jan 23rd 2020

    Derek was very courteous and helpful in providing me advice to decide which replacement bulbs I needed for our older tree. We would recommend 612 Vermont to anyone!

  • 5
    612 Vermont 2.5 V mini Christmas Repacement Bulbs

    Published by Richard long on Jan 21st 2020

    Perfect replacement bulbs; brightness matches existing bulb on pre-lit tree; fast courteous service.

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