Old Will Knott Scales - Real People, Real Service
CJ-300, CJ-600, & CJ-4000 AC Adapter

AC Power Adapter

For Jennings JScale CJ300, CJ600 & CJ4000

"In A Nutshell"
Compatible WithJennings CJ-300
Jennings CJ-600
Jennings CJ-4000

Product Details

Feeding your scale batteries is expensive, and sure doesn't help Mother Nature out either. Do your wallet a big favor by powering your scale with this AC power adapter, instead of batteries.
Please keep in mind that although the manufacturer of your scale provides a warranty for your scale, AC adapters aren't covered under warranty.

Product Questions

Number of questions: 0

Product Reviews

Overall Customer Rating:
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from 5 customer reviews.
Exactly what I needed
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It’s the perfect replacement for the old AC adapter to my coffee scale (J-Scale CJ-4000). Works great.
Reviewed by: Cartwhisperer from Portland, OR on 4/14/2021
It repaired my scale
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My cj-4000 Jennings scale was messing up. Some mornings it would not come on at all. I replaced the power supple with this one, and it has worked perfect ever since
Reviewed by: Horeb from on 6/10/2020
Replaced Broken AC Adapter
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The new AC adapter for my scale has been working great.
Reviewed by: Jay from on 4/28/2020
Quick delivery, works well
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My previous plug worse out at the base (where it plugs into unit) and wires frayed. Needed a quick replacement. Quick delivery and so far so good with new plug. Hoping it is sturdier than the original!
Reviewed by: Paula G from on 2/24/2020
Would recommend this scale to anyone.
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The scale is reliable, able to calibrated and very useful for weighing both in metric and American Std. We use these scales daily for weighing fasteners and small amounts of liquids for production purposes. Would recommend this to anyone.
Reviewed by: Sandy Scanlon from MI on 12/2/2013