My best ever charger!

It is the best charger, especially for the price, I know. It is recommended that a charging current of 0.2 CA (0.2 times the rated capacity of the battery as charging current) to 0.3 CA. The REFRESH program could some old batteries regenerate very well. On the other hand, I was able to clearly identify and useless cells.

By Teilzyklisierung (because most devices much Report the batteries too early as yet to early or reloading) creates a memory effect. What it really is remains to be seen, it causes anyway a steeper voltage drop between 1.25V and 1,20V, making the devices even earlier report the battery as empty.

The rated capacity of a battery says not really about the usable charge of. So-called LSD-cells (low self-discharge) such. As SANYO eneloop keep the voltage through the low internal resistance much longer than 1,20V. Depending on the quality and condition of the battery is 50% or up to 97% of the capacity can be taken up to 1,20V. Therefore, it is impossible from the voltage of the battery close to a state of charge!

No later than every three months should run the REFRESH program.

It has been shown that the memory effect can be reduced if you (as a charging current 0.2 times the battery capacity) charges the battery with at least 0.2 to 0.3 CA CA. Example with a 2000 mA battery charge with 2000x0,25 ie 500 mA.

The great advantage of low input voltage of 3V the charger is that power supply and charger are working with lower losses.

Who wants to use the device sometimes at 12V, still a voltage converter from 12V to 1.5V / 3V / 4.5V / 5V / 6V / 9V / 12V with 3A could procure eg at:. Conelek.com/product_info. php? cPath = 21_23_34 & products_id = 1198

Note:

All intelligent chargers diagnose deeply discharged batteries to be defective because they can the battery elicit any reactions to their diagnosis.

For these exceptions, I have a stupid charger. So I invite about an hour to breathe so much life the battery that he "answer" an intelligent charger again can. Such batteries must then but by the REFRESH program of BC 700!

Charge: It is better not to let the battery come only in this state, but previously (cell voltage under 1,16V = Entladeknick guideline) is.

Stay away from chargers that have no single channel display of current, voltage, and charge time and where there is no capacity test is possible !!!

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The following statements by reviewers who have only been one, two and three stars, cause me to complete my review and take principle here on chargers:

"Meanwhile, the unit has cost me at least 5 batteries"
"But sometimes it destroys batteries"
"This charger can charge no empty battery!"
"A joke, because with other chargers can then load and use it long enough."
"Now 5 to 10 batteries that are prematurely aged"
One asked us: "To recap even know how many batteries they have already lost"

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The old "dumb" chargers usually work so that a DC voltage of, for example 12 or 18V is applied through a series resistor to the cells. This causes a (!) Almost constant charging current. If necessary, nor is a shutdown after example 16 hours to do so. So you can always load, as well as overloading. Monitoring whether at all loaded, there is not. Electrical power is 70% literally burned in these devices to 90% of the series resistors! Are the cells connected in series, all cells shafts must be supported, but the losses are "only" 70%. Can you prove the wells individually, the losses are 90%. These chargers themselves from well-known companies I have all thrown away.

I had tinkered me 20 years ago its own simple device that displays at least once when loading. The resistors I had to replace bulbs and I have two charging circuits, a one for two cells each in the energetically meaningful series. With battery holder for 4 and

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Then I bought almost four years ago, my first "smart" charger "AccuPower AccuManager10", which is still advertised as follows:
Single-channel monitoring, reverse polarity protection, overcharge protection, battery defect detection, fully automatic system recognition of the batteries and requires supposedly thanks "newest charging technology" no previous unloading and regenerated anyway. The latter is of course utter nonsense!

From the initial charging current is derived, how high will be the subsequent charging current. The charge itself is done in 10 second pulses with pauses smaller one second. Batteries, initially take the no electricity are always classified as a defect.

The process has a fatal consequence: the batteries long "over" but are still current record is loaded according to the indicator is flashing, however - and it shows not - possibly only 7mA. Because these cells are charged according flashing approximately the same length as the other, one gets the impression that these were now as good as the other. A voltage measurement then shows a normal voltage and as long as one operates this cell in series with three functioning cells, you realize maybe, "that the cells have eased", but imagines that otherwise all would be still in order.

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Now these cells are inserted 700 battery charger in the Technoline BC and what happens on the example of the TEST program?
The charge begins with the current set of z. B. 200mA, within the shortest possible time is the poor battery to about 1.5V and is recognized as fully. Now the discharge with 100mA begins, within a short time interrupts the voltage to 0.95V and under the discharge is terminated because the battery is depleted. The same happens when REFRESH program and the program ends after the first run.
And now say some critics, the device would have its batteries ruined, instead of realizing that they were for the first time pointed out the unusable cell.

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I did a test with 42 different mostly over 10 years old NiMH cells I already retired and had only used for inferior tasks (flashlights / bicycle lighting).

More than half of these old cells I have due to the measurement data obtained with the BC 700 now discarded. My seitheriges charger "AccuPower AccuManager10" (which was twice as expensive and still is!) Switched to the last false impression as if these cells were loaded correctly.

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I currently set for cameras, etc. only with Sanyo eneloop 2000mAh because of their lower internal resistance a.