2.5 Volt Mini Christmas Replacement Bulbs for Christmas Trees and Incandescent String Lights, Pinched Base, 50 Count

Now: $6.99
(You save )
(11 reviews) Write a Review


• 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


11 Reviews

  • 5
    Replacing incandescent bulbs in a tree that is several years old is not easy. You have to get everything right. These bulbs are perfect.

    Published by Nolan David Smith on Dec 6th 2020

    The staff was so helpful in explaining all the bulb options. I give the staff five stars as well.

  • 5
    Great Service & Quality

    Published by Ken on Nov 16th 2020

    Have ordered multiple products multiple times. Product is always great and we always received within 3 or 4 days of ordering.

  • 5
    2.5 Volt Clear Mini Christmas Replacement Bulbs for Christmas Trees and Incandescent String Lights, Pinched Base, 50 Count

    Published by Gary G. on Jul 3rd 2020

    Very happy with purchase. Glad to be able to find these bulbs. Service was outstanding, as usual.

  • 5
    Replacement Bulbs

    Published by Ed on Jan 27th 2020

    Bulbs work perfectly

  • 5
    Nice bulbs!

    Published by Roger on Jan 21st 2020

    2.5 V 170 mA as advertised. Comes with helpful instructions

  • 5
    replacement bulbs

    Published by Joe on Jan 14th 2020

    Very easy to replace help on phone made ordering the right bulbs for my strands of lights

  • 5
    2.5 V clear mini replacement bulbs

    Published by Unknown on Jan 1st 2020

    Perfect bulbs for fixing my Christmas tree lights; correct V, correct mA; delivered quickly; made a second order to have spares for this season and next.

  • 5
    2.5 v 0.25w xmas lights replacement bulbs

    Published by Unknown on Dec 27th 2019

    I was looking for the 2.5 v 0.25w bulb for awhile I came across 612 Vermont and in a few days I received the bulbs and repaired the light set

  • 5
    Great value

    Published by Unknown on Dec 27th 2019

    These are exactly what my icicle lights needed. It's far easier to replace just the bulb than to try to find replacements with the right base. These worked perfectly for the icicle lights, tree lights, and several other strings of lights. Be sure to order the right wattage or amperage besides the 2.5 volts. If not they'll either be too bright or too dim and burn out too soon.

  • 5
    2.5 volt Christmas tree bulbs.

    Published by Carol Hill on Dec 25th 2019

    Brett was very knowledgeable. He went out of his way to provide us with the correct bulbs. So happy! Our tree looks new again.

Related Products

Customers Also Viewed

Subscribe to our newsletter

Get the latest updates on new products and upcoming sales

No thanks