Operating instruction for the Duracell CEF14AU NiMH Battery Charger. Two Charging Channel. • 2 or 4 cell charging in combined slots (labeled). Bi- color Charging Status LED Indicator. • Red = Charging. • Green = Complete. Find solutions to your duracell cef21 question. Get free help, tips & support from top experts on duracell cef21 related issues.

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Lower right would appear to be a test connector.

Estimated on or before Tue. The most important is not the charger, the time is depending cef1 the accumulators capacity. Even so, this is not getting the charging current to rise much above mA when connecting a cell directly to the AAA post.

Duracell CEF21 Charger review

Learn More – opens in a new window or tab Any international shipping and import charges are paid in part to Pitney Bowes Inc. Hold the body and screw off the Image resizer by SevenSkins. An item that has been used previously. We do not supply or stock anything.

In each case there seems to be a thick current supply trace leading to the AA connector, and one thin voltage sensing? Very rarely, the AAA batteries will lose connection to the charger and start over. Transcend Media Questions. The first is the basic image, and the second has the AAA cell detection circuits traced out: Interest will be charged to your account from the purchase date if the balance is not paid in full within 6 months.


Here are close up views of the connections around the battery contacts. Energizer batteries I had some energizer batteries in a toy that I had.

I don’t think the charging circuit is using a linear regulator. You know how it is with kids always running out of batteries every time you turn around. I was looking for the connections to the AA pads. Sell now – Have one to sell?

If my dufacell is right it will take about 2 hours to charge and will then terminate on cue. Each of these configurations are what I think are the buck circuits. You can use it to charge any kind of rechargeable batteries that you have.

duracell battery recharger instructions

I am now charging an AAA cell directly from the AA connector as a reference test to see if that takes the expected two hours to complete. Front Page What’s New?

Above these pads are four configurations of big coil, big capacitor, transistors, chips and other components e. Add to watch list Remove from watch list. Last edited by PeAK; at I have been trying to avoid any destructive modifications or use of a soldering iron until I could verify that a planned modification would work, however I am now running out of ideas.


Please see post 50 below for details of how to make the modification. Aarrgh, let’s call the whole thing off! Hello there, According to this sheet. They will tell you that For additional information, see the Global Shipping Program terms and conditions – opens in a new window or tab. As useful as it is, this charger is not without flaws.

Duracell Power Gauge CEF21 mod for improved charging of AAA cells

Thread Tools Show Printable Version. Report item – opens in a new window or tab. When an AAA cell is being charged the charging current will pass through the resistor producing a voltage drop of mA x 0.

Seems duracll be either one extra maybe two connection beyond the resistor to this AAA node.