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Thread: Battery terminal extensions

  1. #1
    Supporting Member mklotz's Avatar
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    Battery terminal extensions

    We've been having a spate of power outages so I bought a few twelve volt SLA (Sealed Lead Acid) batteries to handle the unexpected power loss. Since these are the same voltage as automobile batteries, it's possible to take advantage of all the electrical gadgets that are sold to be used on cars...

    LED under the hood lights meant to run directly off the battery
    USB voltage converters that plug into the cigarette lighter to recharge phones, radios, Kindles, NIMh batteries for flashlights, etc.

    In addition, 12 V computer fans provide a nice breeze in the summer months.

    Every month I use a commercial battery charger/keeper to recharge the batteries. Since the charger is intended for automobile batteries it has the giant clips needed for automobile battery terminals. The SLAs have the much smaller F1...

    https://www.batterystuff.com/kb/arti...1-f2-tabs.html

    terminals which the giant charger clips cannot hold securely. If a giant clip slipped off during unattended charging, it could short the charger.

    To avert this I made two terminal extensions that allow the giant clips to attach securely to the F1 clips. A female F1 connector was soldered to a short length of heavy copper wire. The wire was forced into a hole in a 0.5" diameter aluminum slug (brass or copper would have been a better choice for the slug but I didn't have any). A groove turned in the slug prevents the charger clips from pulling off the slug.

    Battery terminal extensions-p1010573.jpg

    Battery terminal extensions-p1010574.jpg

    186 More Best Homemade Tools eBook
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    Regards, Marv

    Failure is just success in progress
    That looks about right - Mediocrates

  2. The Following 9 Users Say Thank You to mklotz For This Useful Post:

    baja (Mar 7, 2024), DIYer (Mar 7, 2024), Improvised DIY (Mar 5, 2024), Jon (Mar 7, 2024), rebuilder1954 (Mar 6, 2024), rlm98253 (Mar 11, 2024), thevillageinn (Mar 10, 2024), Tule (Mar 11, 2024), WmRMeyers (Mar 8, 2024)

  3. #2
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    Good idea, Marv.

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  4. The Following User Says Thank You to rebuilder1954 For This Useful Post:

    WmRMeyers (Mar 8, 2024)

  5. #3
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    Thanks mklotz! We've added your Battery Terminal Extensions to our Electrical category,
    as well as to your builder page: mklotz's Homemade Tools. Your receipt:






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