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


39 Reviews

  • 5
    The replacement bulbs light every time and are easy to replace

    Published by Rick Rericha on Mar 19th 2021

    Good quality

  • 4
    The 100 multi bulbs ordered...product what we ordered.

    Published by Unknown on Mar 1st 2021

    Shipment was good as well. Happy with over all ordering and time it took to ship. Thank you.

  • 5
    2.5 volt Christmas tree incandescent bulbs

    Published by David S on Feb 17th 2021

    Really liked the guide on wattage, which I have never seen elsewhere. Explains why some other bulbs I used were not glowing at the same intensity. Thanks!

  • 5
    Replacement Bulbs

    Published by Bill W on Feb 15th 2021

    The replacement bulbs worked great, just what I needed and the shipment was fast!

  • 5
    2>5 volts .50 watts mini bulbs

    Published by Daniel B. on Feb 15th 2021

    The description and measurements helped me find the exact bulbs I needed! The company I got the artificial xmas tree a few years ago from said these bulbs were discontinued. Not from this company! They worked great!

  • 5
    2.5 volt multi-color bulbs

    Published by George Taylor on Feb 14th 2021

    Perfect replacement bulbs for my needs.

  • 5
    Icicle lights

    Published by Rudy C on Feb 11th 2021

    I was very close form recycling our icicle lights which we love until I found these! So easy to replace the bulbs. as long as you still have the base husks. these bulbs are also great for maintaining your light sets, do yourself a favor if you have a few burned out bulbs, replace them, don't wait until more burn out and an entire segment of bulbs go dark because then you'll need to check all the bulbs in that dark segment. I also purchase the multi colored lights for our Christmas tree - which was also close to being recycled. Make sure you order the correct wattage- which there online instructions will explain how to do.

  • 4
    Bulk pinched base replacement lamps

    Published by Dan Wegner on Jan 29th 2021

    Good quality for a bulk product, my Christmas tree has a different style of lamp husks, so this bulk lamp product is perfect for my lamp replacement needs

  • 5
    Replacement bulbs

    Published by Unknown on Jan 28th 2021

    Exactly what we needed to fix our outdoor garland lights. Customer service was amazing!

  • 5
    I didn’t know which mA bulb I needed the wiring didn’t show anything. So I bought all three. Ended to be the 200 mA. I used 117 bulbs. The tree has 1000. So happy I actually found the proper bulb. Thank you

    Published by Mike on Jan 26th 2021

    C the above statement

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