I am looking for a battery for my vector vec 138 c . I cannot find one anywhere.

I am sure I answered this last week, in fact I know I did!. It is not available as a direct replacement. Look on the unit for an input voltage or ask the maker. Or you can buy one of these and see what happens?

UpBright AC/DC Adapter Compatible with Vector VEC1138 ...

https://www.amazon.com > UpBright-Global-Adapter-V...
Amazon.com: UpBright AC/DC Adapter Compatible with Vector VEC1138 VEC138 VEC138Y VEC139 VEC139C Xtreme Sport Spot Rechargeable Spotlight VEC192 VEC193 ...
Rating: 4.6 · ‎6 reviews
Missing: VEC1215 ‎' Must include: VEC1215

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  VEC 192 VEC192 Rechargeable Spotlight Sport Spot SportSpot

  https://www.amazon.com > Accessory-USA-Adapter-Ve...
  Amazon.com: Accessory USA AC DC Adapter for Vector Model: VEC 192 VEC192 Rechargeable Spotlight Sport Spot SportSpot Spot Light Power Supply Cord ...
  Rating: 4.1 · ‎4 reviews

Manufacturer / Seller

4140 SW 28TH WAY, FT. LAUDERDALE, FL 33312
TEL: 954-584-4446
• FAX: 954-584-5556
• TOLL FREE: 866-584-5504
www.vectormfg.com

https://www.google.com/search?q=vector+sport+spot+%22VEC1215%22+replacement+charger

If it was available, it would be in that link above.
..

Need Help? Call us at 1-800-677-8278

If charger can be taken apart and the battery removed, try Batteryspec.com for a replacement battery. Worked for my Vector.

Go to your local Batteries + Bulbs

In March, 2006, Black & Decker purchased Vector Products, Inc. Since the acquisition, Black & Decker has assumed the manufacturing of all Vector products. For customer service and warranty information for Vector products, please contact Black & Decker Customer Service.

Baccus just bought Vector from Black & Decker (Sept. 2010)
Looks like flashlight model # VEC 139BW but a different color. (Mine is White w/blue trim.) There is a battery in the top & one in the bottom, replace them at the same time. If I can find several battery stores in Buffalo you should be able to find a local battery store there.
Baccus- 877-571-2391 for main beam, area light no longer available. Try to find local distributor & save shipping charges.

Call Vector and order what you need

Vector Products Customer Service # 1-800-618-5178

Vector was acquired by Black & Decker in 2006, and their old website just sends you to the B&D site. I have had no luck finding a replacement battery.

However, Amazon.com still carries the original Vector 1-mil spotlight. 

Had a seller on E-Bay respond with a Vector service # where I found a local dealer through and ordered the part.

ground it off on the case...any grounding method should work. Unless you are talking about the main connection terminals... then just replace the missing thumb screw with a short screw and an eyelette type connecter.